Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6721015
Hongjun Song, Yi Wang, C. Garson, K. Pant
This paper presents a Nafion film based micro-nanofluidic device for concurrent DNA preconcentration and separation. The principle of the device is based on: (a) ion concentration polarization phenomenon at the junction of the microchannel and the nanochannels in the Nafion film to form opposing electrophoretic and electroosmotic forces acting on the DNAs, combined with (b) end-labeled free solution electrophoresis to vary the charge-to-mass ratio for molecular differentiation. Extensive experiments were carried out to characterize the functionality of the device. Concurrent preconcentration and separation of a DNA mixture within 240s were successfully demonstrated, yielding concentration ratios up to 1,150X and separation resolution of 1.85. The effect of applied electric field on the concentration and separation performance was investigated. The device can be used as a key sample preparation element in conjunction with micro- or nanofluidic sensors to obtained microTAS functionality.
{"title":"Nafion film based nanofluidic device for concurrent DNA preconcentration and separation","authors":"Hongjun Song, Yi Wang, C. Garson, K. Pant","doi":"10.1109/NANO.2013.6721015","DOIUrl":"https://doi.org/10.1109/NANO.2013.6721015","url":null,"abstract":"This paper presents a Nafion film based micro-nanofluidic device for concurrent DNA preconcentration and separation. The principle of the device is based on: (a) ion concentration polarization phenomenon at the junction of the microchannel and the nanochannels in the Nafion film to form opposing electrophoretic and electroosmotic forces acting on the DNAs, combined with (b) end-labeled free solution electrophoresis to vary the charge-to-mass ratio for molecular differentiation. Extensive experiments were carried out to characterize the functionality of the device. Concurrent preconcentration and separation of a DNA mixture within 240s were successfully demonstrated, yielding concentration ratios up to 1,150X and separation resolution of 1.85. The effect of applied electric field on the concentration and separation performance was investigated. The device can be used as a key sample preparation element in conjunction with micro- or nanofluidic sensors to obtained microTAS functionality.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130484349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720898
Yuhua Yu, Jianfeng Chen, Jia Zhou
This work reported a one-step electrodeposition to fabricate a graphene nanosheets doped polypyrrole modified gold (PPy/GENS/Au) electrode at the on-chip three-electrode-system electrochemical sensor array. The PPy/GENS/Au electrode exhibited excellent electrochemical properties of large current response, good reproducibility and stability. When applied for the detection of hydrogen peroxide (H2O2), this proposed sensor carry out a rapid, direct and selective determination of H2O2 with the linear range from 1 to 10mM (R-square=0.9914) and a sensitivity of about 32 μA mM-1cm-2. The simple and low-cost construction of PPy/GENS/Au electrode shows a great promise to fabricate mass-produced nano-platform for potential application of biosensing analysis in a lab-on-a-chip system.
{"title":"Enzyme-free electroreduction of hydrogen peroxide at polypyrrole/graphene/au microelectrode based on three-electrode-system array","authors":"Yuhua Yu, Jianfeng Chen, Jia Zhou","doi":"10.1109/NANO.2013.6720898","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720898","url":null,"abstract":"This work reported a one-step electrodeposition to fabricate a graphene nanosheets doped polypyrrole modified gold (PPy/GENS/Au) electrode at the on-chip three-electrode-system electrochemical sensor array. The PPy/GENS/Au electrode exhibited excellent electrochemical properties of large current response, good reproducibility and stability. When applied for the detection of hydrogen peroxide (H2O2), this proposed sensor carry out a rapid, direct and selective determination of H2O2 with the linear range from 1 to 10mM (R-square=0.9914) and a sensitivity of about 32 μA mM-1cm-2. The simple and low-cost construction of PPy/GENS/Au electrode shows a great promise to fabricate mass-produced nano-platform for potential application of biosensing analysis in a lab-on-a-chip system.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130723795","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720809
Y. Yang, W. Zhao
This paper intends to study the phenomena of thermal-caused material modifications in the principle of nanoscale electro spark during the SPM-based electric lithography. Since the direct observation of the electro spark process seems impossible in the nanoscale gap region, the molecular dynamics (MD) simulation method is applied to help investigate the influence of the thermal effect due to the Joule heating generated by the electro spark. The simplified heat source model is constructed based on the local temperature profile of the sample material beneath the tip, which is calculated through the Joule heating equation by the finite element method (FEM). The material removal process of local Cu and graphite sample subjected to the heat input is respectively simulated by the MD method to semi-quantitatively identify the thermal effect on the SPM-based electric nanofabrication results.
{"title":"Molecular dynamics simulation of the thermal-caused material removal process by the SPM-based electric nanofabrication","authors":"Y. Yang, W. Zhao","doi":"10.1109/NANO.2013.6720809","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720809","url":null,"abstract":"This paper intends to study the phenomena of thermal-caused material modifications in the principle of nanoscale electro spark during the SPM-based electric lithography. Since the direct observation of the electro spark process seems impossible in the nanoscale gap region, the molecular dynamics (MD) simulation method is applied to help investigate the influence of the thermal effect due to the Joule heating generated by the electro spark. The simplified heat source model is constructed based on the local temperature profile of the sample material beneath the tip, which is calculated through the Joule heating equation by the finite element method (FEM). The material removal process of local Cu and graphite sample subjected to the heat input is respectively simulated by the MD method to semi-quantitatively identify the thermal effect on the SPM-based electric nanofabrication results.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129330773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720861
Rong Liu, R. Rallo, Y. Cohen
Quantitative Structure-Activity-Relationships (QSARs) were investigated for cellular uptake of nanoparticles (NPs) using a dataset comprised of 109 NPs of the same iron oxide core but with different surface-modifying organic molecules. QSARs were built using both linear and non-linear model building methods along with a forward descriptor selection from an initial pool of 184 chemical descriptors calculated for the NP surface-modifying organic molecules. The resulting QSAR was a robust Relevance Vector Machine (RVM) model built with nine descriptors, which demonstrated prediction accuracy as quantified by a 5-fold cross-validated squared correlation coefficient (RCV2) of 0.77. The William's plot for the RVM based QSAR shows that the nine selected descriptors spanned a reasonable applicability domain. The developed QSAR can provide useful insight regarding parameters that affect NP cellular uptake and thus provide guidance for the selection and/or design of NPs for biomedical applications.
{"title":"Quantitative Structure-Activity-Relationships for cellular uptake of nanoparticles","authors":"Rong Liu, R. Rallo, Y. Cohen","doi":"10.1109/NANO.2013.6720861","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720861","url":null,"abstract":"Quantitative Structure-Activity-Relationships (QSARs) were investigated for cellular uptake of nanoparticles (NPs) using a dataset comprised of 109 NPs of the same iron oxide core but with different surface-modifying organic molecules. QSARs were built using both linear and non-linear model building methods along with a forward descriptor selection from an initial pool of 184 chemical descriptors calculated for the NP surface-modifying organic molecules. The resulting QSAR was a robust Relevance Vector Machine (RVM) model built with nine descriptors, which demonstrated prediction accuracy as quantified by a 5-fold cross-validated squared correlation coefficient (RCV2) of 0.77. The William's plot for the RVM based QSAR shows that the nine selected descriptors spanned a reasonable applicability domain. The developed QSAR can provide useful insight regarding parameters that affect NP cellular uptake and thus provide guidance for the selection and/or design of NPs for biomedical applications.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127779720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720812
D. Jung, L. Overzet, Gil S. Lee
Spin-capable multi-walled carbon nanotube (MWCNT) forests that form webs, sheets, and yarns can play an important role in means for advancing various technologies. It is critical to understand the parameters that affect to grow spin-capable carbon nanotubes (CNTs) in a repeatable fashion. In this paper, we investigated the effects of carrier gases on the catalytic properties of iron (Fe) in the synthesis of CNT forest. We found that helium as carrier gas could effectively activate the Fe catalyst during the chemical vapor deposition (CVD) process, and increase the nucleation density of MWCNTs. Moreover, adding of hydrogen (H2) gas is crucial for the synthesis of high-density MWCNTs. H2 gas can suppress the agglomeration of Fe nanoparticles by Ostwald effect, which is useful for synthesizing high density. At the same time, it is also found that height of the CNT forest really depends on the growth time. A growth time of 5 min can achieve suitable sized nanoparticles with sufficient density to produce CNT forests with a higher areal density and a shorter tube spacing.
{"title":"Influence of gas condition and growth time on the growth of a spin-capable multi-walled carbon nanotube","authors":"D. Jung, L. Overzet, Gil S. Lee","doi":"10.1109/NANO.2013.6720812","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720812","url":null,"abstract":"Spin-capable multi-walled carbon nanotube (MWCNT) forests that form webs, sheets, and yarns can play an important role in means for advancing various technologies. It is critical to understand the parameters that affect to grow spin-capable carbon nanotubes (CNTs) in a repeatable fashion. In this paper, we investigated the effects of carrier gases on the catalytic properties of iron (Fe) in the synthesis of CNT forest. We found that helium as carrier gas could effectively activate the Fe catalyst during the chemical vapor deposition (CVD) process, and increase the nucleation density of MWCNTs. Moreover, adding of hydrogen (H2) gas is crucial for the synthesis of high-density MWCNTs. H2 gas can suppress the agglomeration of Fe nanoparticles by Ostwald effect, which is useful for synthesizing high density. At the same time, it is also found that height of the CNT forest really depends on the growth time. A growth time of 5 min can achieve suitable sized nanoparticles with sufficient density to produce CNT forests with a higher areal density and a shorter tube spacing.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128973977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720828
Chen Li, Qiu-lin Tan, Ying-ping Hong, B. Ge, Wei Wang, J. Xiong
This article describes a manufacturing method of embedded cavity using zirconia casting-belt and multi-layer lamination technology for the high temperature ceramics, as the present high temperature ceramics are difficult to form a sealed cavity and encapsulation is complicated. Complete the preparation of high temperature ceramics sealed cavity, by using punching machines to punch out the cavity in zirconia green tapes, selecting different temperature process parameters in the high-temperature sintering process, with carbon film filled or not filled in the cavity. Using SEM (the scanning electron microscope) to analysis the sample cavity, it showed that when the carbon film is filled in the cavity to select the appropriate sintering curves, it can effectively prevent the sagging, apophysis, and warpage of the cavity. This manufacturing method is available for structural integrity, high strength and good air tightness ceramics sealed cavity, it can be used for gas sensors, flow sensors, pressure sensors and capacitance type high temperature pressure sensor.
{"title":"Embedded seal cavity preparation technology based on the zirconia","authors":"Chen Li, Qiu-lin Tan, Ying-ping Hong, B. Ge, Wei Wang, J. Xiong","doi":"10.1109/NANO.2013.6720828","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720828","url":null,"abstract":"This article describes a manufacturing method of embedded cavity using zirconia casting-belt and multi-layer lamination technology for the high temperature ceramics, as the present high temperature ceramics are difficult to form a sealed cavity and encapsulation is complicated. Complete the preparation of high temperature ceramics sealed cavity, by using punching machines to punch out the cavity in zirconia green tapes, selecting different temperature process parameters in the high-temperature sintering process, with carbon film filled or not filled in the cavity. Using SEM (the scanning electron microscope) to analysis the sample cavity, it showed that when the carbon film is filled in the cavity to select the appropriate sintering curves, it can effectively prevent the sagging, apophysis, and warpage of the cavity. This manufacturing method is available for structural integrity, high strength and good air tightness ceramics sealed cavity, it can be used for gas sensors, flow sensors, pressure sensors and capacitance type high temperature pressure sensor.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"1109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127430836","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720841
T. Ishiyama, T. Fujii, Y. Ishii, M. Fukuda
Arrays of single-crystal zinc oxide (ZnO) nanowires have been synthesized on silicon substrates by vapor-liquid-solid growth techniques. The effect of growth conditions including substrate temperature and Ar gas flow rate on growth properties of ZnO nanowire arrays were studied. Structural and optical characterization was performed using scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoluminescence (PL) spectroscopy. The XRD measurements showed that the single crystal nanowires exhibited growth in the (002) direction. SEM images of the ZnO nanowire arrays grown at various Ar gas flow rates indicated that the alignment and structural features of ZnO nanowires were affected by the gas flow rate. The PL of the ZnO nanowire arrays exhibited strong ultraviolet (UV) emission at 380□nm and weak green emission around 510□nm. A blue shift and broadening of the UV emission was observed with an increment of Ar gas flow rate.
{"title":"Photoluminescence properties of ZnO nanowire arrays fabricated on silicon substrate","authors":"T. Ishiyama, T. Fujii, Y. Ishii, M. Fukuda","doi":"10.1109/NANO.2013.6720841","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720841","url":null,"abstract":"Arrays of single-crystal zinc oxide (ZnO) nanowires have been synthesized on silicon substrates by vapor-liquid-solid growth techniques. The effect of growth conditions including substrate temperature and Ar gas flow rate on growth properties of ZnO nanowire arrays were studied. Structural and optical characterization was performed using scanning electron microscopy (SEM), X-ray diffraction (XRD) and photoluminescence (PL) spectroscopy. The XRD measurements showed that the single crystal nanowires exhibited growth in the (002) direction. SEM images of the ZnO nanowire arrays grown at various Ar gas flow rates indicated that the alignment and structural features of ZnO nanowires were affected by the gas flow rate. The PL of the ZnO nanowire arrays exhibited strong ultraviolet (UV) emission at 380□nm and weak green emission around 510□nm. A blue shift and broadening of the UV emission was observed with an increment of Ar gas flow rate.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"63 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127703693","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720980
C. Fujihashi
Valuable progress has been made in the area of nanotechnology, but for the further advancement of atom scale devices, results and theories need to be more precise, and have a solid fundamental basis. This paper presents the improved theory in accuracy for discrete energy level quantum dot transistors. The wave packet transition model is suggested, allowing the introduction of the state number density function, and the derived results make clear why the quantum resistance based on the uncertainty principle appears in this problem. Since quantum resistance causes no energy dissipation, the relaxation process is newly considered to explain the dissipation. The potential parameters which should be applied to the quantum model of the quantum dot transistor are derived from the fundamental classical capacitance model of the transistor, and make clear the relation between the circuit voltages in the classical model and the internal potentials in the quantum model. The theory in this paper contains the orthodox theory as a special case, and the characteristics of the discrete energy level dual quantum dot transistor are analyzed.
{"title":"On introducing of state number density function for discrete energy level quantum dot transistor","authors":"C. Fujihashi","doi":"10.1109/NANO.2013.6720980","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720980","url":null,"abstract":"Valuable progress has been made in the area of nanotechnology, but for the further advancement of atom scale devices, results and theories need to be more precise, and have a solid fundamental basis. This paper presents the improved theory in accuracy for discrete energy level quantum dot transistors. The wave packet transition model is suggested, allowing the introduction of the state number density function, and the derived results make clear why the quantum resistance based on the uncertainty principle appears in this problem. Since quantum resistance causes no energy dissipation, the relaxation process is newly considered to explain the dissipation. The potential parameters which should be applied to the quantum model of the quantum dot transistor are derived from the fundamental classical capacitance model of the transistor, and make clear the relation between the circuit voltages in the classical model and the internal potentials in the quantum model. The theory in this paper contains the orthodox theory as a special case, and the characteristics of the discrete energy level dual quantum dot transistor are analyzed.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132825199","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720906
Amandeep Singh, M. Sharma, O. Pandey, Xueyong Wei
This paper presents some results from a study of luminescent properties of core shell zinc sulphide (ZnS) nanoparticles (NPs) with the Mn doped core and ZnS as the shell. Influencing factors like core shell structure and dopant concentration are tuned to investigate the effects on their luminescent properties. Results indicate that these luminescent nanoparticles potentially can be used in LEDs.
{"title":"Highly luminescent ZnS:Mn/ZnS core shell nanoparticles for solid state lightning","authors":"Amandeep Singh, M. Sharma, O. Pandey, Xueyong Wei","doi":"10.1109/NANO.2013.6720906","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720906","url":null,"abstract":"This paper presents some results from a study of luminescent properties of core shell zinc sulphide (ZnS) nanoparticles (NPs) with the Mn doped core and ZnS as the shell. Influencing factors like core shell structure and dopant concentration are tuned to investigate the effects on their luminescent properties. Results indicate that these luminescent nanoparticles potentially can be used in LEDs.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122391982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2013-08-01DOI: 10.1109/NANO.2013.6720991
Bo Chen, Hsueh-Tao Chou, Ho-Chun Hsu
In the study, ZnO nanowires were synthesized by chemical bath deposition (CBD). We have synthesized the ZnO nanowires with various growth time and use the ZnO films as the photoelectrodes of DSSCs. In our experiment, the seeded solution was prepared by zinc acetate and NaOH. And the precursor of CBD method solution was made by zinc nitrate and HMTA for ZnO nanowires growing. We demonstrated the fabrications and properties of the ZnO nanowires using SEM and also investigated the performance of the dye-sensitized solar cellsl byusing the solar cell measurement system (a Keithley 2400 digital source meter) at one sun (A.M. 1.5G, 100mW/cm2) illumination. We observed that the aspect ratio of the ZnO nanowires become longer with a longer growing time (3hr, 6hr, 12hr, and 24hr). And the highest aspect ratios was 23.97. The performance of the DSSC shows that the cell which grew in 6H (Voc=0.4V, Isc=1.11mA, η=0.17%) was the optimum result.
{"title":"Effect of ZnO nanowire synthesis time on dye-sensitized solar cells","authors":"Bo Chen, Hsueh-Tao Chou, Ho-Chun Hsu","doi":"10.1109/NANO.2013.6720991","DOIUrl":"https://doi.org/10.1109/NANO.2013.6720991","url":null,"abstract":"In the study, ZnO nanowires were synthesized by chemical bath deposition (CBD). We have synthesized the ZnO nanowires with various growth time and use the ZnO films as the photoelectrodes of DSSCs. In our experiment, the seeded solution was prepared by zinc acetate and NaOH. And the precursor of CBD method solution was made by zinc nitrate and HMTA for ZnO nanowires growing. We demonstrated the fabrications and properties of the ZnO nanowires using SEM and also investigated the performance of the dye-sensitized solar cellsl byusing the solar cell measurement system (a Keithley 2400 digital source meter) at one sun (A.M. 1.5G, 100mW/cm2) illumination. We observed that the aspect ratio of the ZnO nanowires become longer with a longer growing time (3hr, 6hr, 12hr, and 24hr). And the highest aspect ratios was 23.97. The performance of the DSSC shows that the cell which grew in 6H (Voc=0.4V, Isc=1.11mA, η=0.17%) was the optimum result.","PeriodicalId":189707,"journal":{"name":"2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127733850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：