Pub Date : 2014-12-01DOI: 10.1109/ICECE.2014.7026839
S. Sarkar, P. Kundu
With the increasing popularity of power line communication technologies, modifications over Spread Spectrum Technologies were made so as to develop a suitable alternative for power line communication. Differential Code Shift Keying (DCSK) is one such technology developed by Yitran Technologies & patented on May 16th, 2000. In this paper, it is proposed to develop this DCSK Communication Scheme which can be used for PLCC system for DAS application.
{"title":"A novel DCSK communication scheme for PLCC based DAS","authors":"S. Sarkar, P. Kundu","doi":"10.1109/ICECE.2014.7026839","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026839","url":null,"abstract":"With the increasing popularity of power line communication technologies, modifications over Spread Spectrum Technologies were made so as to develop a suitable alternative for power line communication. Differential Code Shift Keying (DCSK) is one such technology developed by Yitran Technologies & patented on May 16th, 2000. In this paper, it is proposed to develop this DCSK Communication Scheme which can be used for PLCC system for DAS application.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128671056","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7027024
Nusrat Jahan, Rowshon Ara Mannan, Priyanka Biswas, Y. Arafat
For a Gaussian doped graded base AlGaAs Hetero-junction Bipolar Transistor (HBT), base transit time (BTT) has been determined using a suitable analytical model. Here the authors have investigated the dependency of base transit time on different physical and input parameters such as the collector current density, base emitter voltage etc. Electric field dependent carrier mobility also has been included into the analytic model and found that the base transit time worsens compared to the value found without taken the field dependent mobility into account.
{"title":"Estimating the transit time of an AlyGa1−yAs HBT in the Gaussian doped base region for low to moderately high level of injection","authors":"Nusrat Jahan, Rowshon Ara Mannan, Priyanka Biswas, Y. Arafat","doi":"10.1109/ICECE.2014.7027024","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7027024","url":null,"abstract":"For a Gaussian doped graded base AlGaAs Hetero-junction Bipolar Transistor (HBT), base transit time (BTT) has been determined using a suitable analytical model. Here the authors have investigated the dependency of base transit time on different physical and input parameters such as the collector current density, base emitter voltage etc. Electric field dependent carrier mobility also has been included into the analytic model and found that the base transit time worsens compared to the value found without taken the field dependent mobility into account.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122279690","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026964
A. Das, M. Bhuiyan
In this paper, a statistical analysis of EEG signals is carried out in the dual tree complex wavelet transform (DT-CWT) domain. It is shown that Bessel k-form(BKF) pdf can suitably model the DT-CWT sub-bands and the BKF parameters in various DT-CWT sub-bands can discriminate various types of EEG data effectively. Next these parameters are utilized by the SVM-based classifiers to classify the EEG data. The classification performance is studied for three clinically relevant cases including healthy vs seizure, non-seizure vs seizure and inter-ictal vs ictal recordings. The proposed method provides 100% accuracy with 100% sensitivity and 100% specificity in all the cases. In addition, in comparison to several state-of-the-art algorithms, the proposed method has also been shown to be computationally fast.
{"title":"Bessel k-form parameters in the dual tree complex wavelet transform domain for the detection of epilepsy and seizure","authors":"A. Das, M. Bhuiyan","doi":"10.1109/ICECE.2014.7026964","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026964","url":null,"abstract":"In this paper, a statistical analysis of EEG signals is carried out in the dual tree complex wavelet transform (DT-CWT) domain. It is shown that Bessel k-form(BKF) pdf can suitably model the DT-CWT sub-bands and the BKF parameters in various DT-CWT sub-bands can discriminate various types of EEG data effectively. Next these parameters are utilized by the SVM-based classifiers to classify the EEG data. The classification performance is studied for three clinically relevant cases including healthy vs seizure, non-seizure vs seizure and inter-ictal vs ictal recordings. The proposed method provides 100% accuracy with 100% sensitivity and 100% specificity in all the cases. In addition, in comparison to several state-of-the-art algorithms, the proposed method has also been shown to be computationally fast.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116513877","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026849
M. Fuad, D. Deb, Shequi'lla Whitaker
In traditional classroom setting, lecturing is the prominent method of transferring knowledge to students. However this passive mode of instruction does not keep student engaged and interested longer in the class. Although mobile devices are used extensively in everyday life and have a bad reputation of creating distraction during class, it can be used to make student's class participation more interactive and engaging. This paper presents one such approach, which is fundamentally different than existing ones by allowing students to participate in active learning during class session by using their mobile devices. This research envision interactive problem applications which will run in student mobile devices, which faculty can initiate remotely and where student can actively participate to solve problem in a hands-on manner. This paper presents the development of a Karnaugh map interactive mobile application and its incorporation into Mobile Response System.
{"title":"Mobile interactive problem solving for active teaching and learning","authors":"M. Fuad, D. Deb, Shequi'lla Whitaker","doi":"10.1109/ICECE.2014.7026849","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026849","url":null,"abstract":"In traditional classroom setting, lecturing is the prominent method of transferring knowledge to students. However this passive mode of instruction does not keep student engaged and interested longer in the class. Although mobile devices are used extensively in everyday life and have a bad reputation of creating distraction during class, it can be used to make student's class participation more interactive and engaging. This paper presents one such approach, which is fundamentally different than existing ones by allowing students to participate in active learning during class session by using their mobile devices. This research envision interactive problem applications which will run in student mobile devices, which faculty can initiate remotely and where student can actively participate to solve problem in a hands-on manner. This paper presents the development of a Karnaugh map interactive mobile application and its incorporation into Mobile Response System.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127092856","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026930
Abu Shahir Md. Khalid Hasan, R. Rahman, M. A. Haque
Ultrasound elastography is a medical imaging technique to visualize the tissue stiffness using a conventional ultrasound machine. To compute the elastogram, the radiofrequency echo signals are acquired before and after a small applied deformation. Then the local tissue displacement field is estimated by searching the peak of the cross-correlation function between small segments of pre- and post- deformation signals. Finally, the corresponding strain distribution is imaged by differentiating the displacement field. However, the pre- and post- signals are not exactly the shifted versions of one another and hence the displacement estimation is inaccurate and the resulting strain image is highly noisy. In this paper, we propose a novel technique to estimate the strain image from the ratios of the peak frequencies of the pre- and post- deformation signals. Unlike other time/frequency domain reported schemes, our proposed technique does not use cross-correlation or any other similarity measures and directly estimate the strain in the power spectral density domain. Simulation experiments are conducted at various strain conditions and the results show that the proposed method can be an effective and computationally efficient algorithm for ultrasound elastography.
{"title":"Direct strain estimation for ultrasound elastography using peak frequency ratio of radiofrequency echo signals","authors":"Abu Shahir Md. Khalid Hasan, R. Rahman, M. A. Haque","doi":"10.1109/ICECE.2014.7026930","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026930","url":null,"abstract":"Ultrasound elastography is a medical imaging technique to visualize the tissue stiffness using a conventional ultrasound machine. To compute the elastogram, the radiofrequency echo signals are acquired before and after a small applied deformation. Then the local tissue displacement field is estimated by searching the peak of the cross-correlation function between small segments of pre- and post- deformation signals. Finally, the corresponding strain distribution is imaged by differentiating the displacement field. However, the pre- and post- signals are not exactly the shifted versions of one another and hence the displacement estimation is inaccurate and the resulting strain image is highly noisy. In this paper, we propose a novel technique to estimate the strain image from the ratios of the peak frequencies of the pre- and post- deformation signals. Unlike other time/frequency domain reported schemes, our proposed technique does not use cross-correlation or any other similarity measures and directly estimate the strain in the power spectral density domain. Simulation experiments are conducted at various strain conditions and the results show that the proposed method can be an effective and computationally efficient algorithm for ultrasound elastography.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126489193","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026847
Abdullah Al Noman Ovi, M. Mahdy, MD Zuboraj, Ayed Al Sayem, M. Ababil Hossain, M. Matin
In this contribution, we have proposed a robust technique to achieve tetra-band performance in both conventional dielectric (elliptical shape) and also metamaterial loaded (rectangular shape) patch antennas. Incorporation of symmetric slots over the patch in both type of antennas have been shown here by using the concept of additional modified modes and perturbation approach. At first, we have shown that if and only if, elliptical shape patch antenna is properly optimized along with symmetrical slots over metallic patch, it is possible to achieve satisfactory four- band performance without the aid of any complex procedure currently present in literature. Later, we have reported a compact metamaterial loaded tetra band rectangular patch antenna to achieve extremely high gain and directivity performances for all the four bands, which may not be possible with conventional dielectric antennas.
{"title":"Achieving tetra band performance in simple dielectric and in metamaterial filled patch antennas","authors":"Abdullah Al Noman Ovi, M. Mahdy, MD Zuboraj, Ayed Al Sayem, M. Ababil Hossain, M. Matin","doi":"10.1109/ICECE.2014.7026847","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026847","url":null,"abstract":"In this contribution, we have proposed a robust technique to achieve tetra-band performance in both conventional dielectric (elliptical shape) and also metamaterial loaded (rectangular shape) patch antennas. Incorporation of symmetric slots over the patch in both type of antennas have been shown here by using the concept of additional modified modes and perturbation approach. At first, we have shown that if and only if, elliptical shape patch antenna is properly optimized along with symmetrical slots over metallic patch, it is possible to achieve satisfactory four- band performance without the aid of any complex procedure currently present in literature. Later, we have reported a compact metamaterial loaded tetra band rectangular patch antenna to achieve extremely high gain and directivity performances for all the four bands, which may not be possible with conventional dielectric antennas.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128803010","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026857
Garin M. Schoonhoven, M. Uddin
This paper presents a nonlinear flux controller based wide speed operation of permanent magnet synchronous motor (PMSM) drive. An adaptive backstepping based nonlinear controller is developed to get the control laws while maintaining systems stability. For the nonlinear controller the flux is controlled based on maximum torque per ampere (MTPA) and flux weakening (FW) techniques for below and above the rates speed, respectively. The global asymptotic stability of the drive is demonstrated by Lyapunov stability criterion in conjuncture with Barbalat's lemma. The system nonlinearities are also accommodated through the online estimation of critical parameters. The proposed nonlinear flux controller based PMSM drive is investigated in simulation using MATLAB/Simulink software. The global stability and robustness of the driver are verified through simulation results.
{"title":"Wide speed range operation of PMSM drives using nonlinear flux control techniques","authors":"Garin M. Schoonhoven, M. Uddin","doi":"10.1109/ICECE.2014.7026857","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026857","url":null,"abstract":"This paper presents a nonlinear flux controller based wide speed operation of permanent magnet synchronous motor (PMSM) drive. An adaptive backstepping based nonlinear controller is developed to get the control laws while maintaining systems stability. For the nonlinear controller the flux is controlled based on maximum torque per ampere (MTPA) and flux weakening (FW) techniques for below and above the rates speed, respectively. The global asymptotic stability of the drive is demonstrated by Lyapunov stability criterion in conjuncture with Barbalat's lemma. The system nonlinearities are also accommodated through the online estimation of critical parameters. The proposed nonlinear flux controller based PMSM drive is investigated in simulation using MATLAB/Simulink software. The global stability and robustness of the driver are verified through simulation results.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116558078","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026937
Anjum Ibna Matin, Sawgath Jahan, M. R. Huq
A social networking service is a platform to build relations among people who share interests, activities, backgrounds or real-life connections. Communities in a social network are the gathering places for the people with common interest. Social network analysis is in high demand now a days for the increasing number of users. They involve themselves into different communities. They share post, their views, what they like etc. in communities. So it is important for them to find suitable communities where they have common factors like friends, followers and their activities etc. In this paper, we propose a technique for recommending a community in social network like Facebook, Twitter etc. Finding strong friends from a user's friend list and using clique and quasi-clique concepts introduced in graph mining, we recommend suitable communities for a user in a social network.
{"title":"Community recommendation in social network using strong friends and quasi-clique approach","authors":"Anjum Ibna Matin, Sawgath Jahan, M. R. Huq","doi":"10.1109/ICECE.2014.7026937","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026937","url":null,"abstract":"A social networking service is a platform to build relations among people who share interests, activities, backgrounds or real-life connections. Communities in a social network are the gathering places for the people with common interest. Social network analysis is in high demand now a days for the increasing number of users. They involve themselves into different communities. They share post, their views, what they like etc. in communities. So it is important for them to find suitable communities where they have common factors like friends, followers and their activities etc. In this paper, we propose a technique for recommending a community in social network like Facebook, Twitter etc. Finding strong friends from a user's friend list and using clique and quasi-clique concepts introduced in graph mining, we recommend suitable communities for a user in a social network.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116981286","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026828
P. Ahmmed, Zabir Ahmed, Mohammad Ishfaque, Jahan Rafee, M. Awal, S. Choudhury
A computationally fast visual approach of autonomous robot localization with high degree of accuracy is demonstrated. Relative position and orientation of an autonomous robot with respect to a fixed reference point is determined by minimal processing of a monocular image employing projective geometry resulting in very low computational requirements. A three-layered sequential algorithm i.e. Detection-Pixel Level Analysis-Sub Pixel Accuracy, is used to speed up the process and to reduce computational bulk. The position coordinate of a point in a plane is obtained by analyzing the perspective projection of a reference structure on a monocular image perceived by a camera placed at that point. A chessboard pattern is suitably chosen as the reference structure which is placed at the origin of the plane.
{"title":"Self-localization of a mobile robot using monocular vision of a chessboard pattern","authors":"P. Ahmmed, Zabir Ahmed, Mohammad Ishfaque, Jahan Rafee, M. Awal, S. Choudhury","doi":"10.1109/ICECE.2014.7026828","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026828","url":null,"abstract":"A computationally fast visual approach of autonomous robot localization with high degree of accuracy is demonstrated. Relative position and orientation of an autonomous robot with respect to a fixed reference point is determined by minimal processing of a monocular image employing projective geometry resulting in very low computational requirements. A three-layered sequential algorithm i.e. Detection-Pixel Level Analysis-Sub Pixel Accuracy, is used to speed up the process and to reduce computational bulk. The position coordinate of a point in a plane is obtained by analyzing the perspective projection of a reference structure on a monocular image perceived by a camera placed at that point. A chessboard pattern is suitably chosen as the reference structure which is placed at the origin of the plane.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132479417","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 : 2014-12-01DOI: 10.1109/ICECE.2014.7026855
F. Haque, N. Khan, K. S. Rahman, M. Islam, M. Alam, K. Sopian, N. Amin
Zinc Sulphide (ZnS) is a promising candidate to be an alternative buffer layer to the commonly used cadmium sulphide (CdS) in CZTS solar cells. In this study, buffer layer parameters like layer thickness and buffer layer bandgap have been investigated by Analysis of Microelectronic and Photonic Structures (AMPS-1D) to find out the higher conversion efficiency. A promising result has been achieved with an efficiency of 14.49% (with Voc = 0.81 V, Jsc = 28.85 mA/cm2 and Fill factor = 67.5) by using ZnS as a buffer layer. It is also found that the high efficiency of CZTS absorber layer thickness is between 2 μm and 4 μm. From the simulation results, it is revealed that higher efficiency can be achieved for the buffer layer bandgap around 3.10 eV - 3.25 eV. This result can be explained by the practical work as the bandgap of ZnS is largely dependent on the preparation conditions and stoichiometry. In conclusion, numerous influences of buffer layer are investigated in CZTS solar cell that can lead to the fabrication of high efficiency devices.
在CZTS太阳能电池中，硫化锌(ZnS)是替代常用的硫化镉(cd)的一种很有前途的缓冲层。本研究通过微电子与光子结构分析(AMPS-1D)对缓冲层厚度、缓冲层带隙等参数进行了研究，以获得更高的转换效率。采用ZnS作为缓冲层，效率达到14.49% (Voc = 0.81 V, Jsc = 28.85 mA/cm2, Fill factor = 67.5)。同时发现，吸收层厚度在2 ~ 4 μm之间时，吸收效率最高。仿真结果表明，当缓冲层带隙在3.10 eV ~ 3.25 eV左右时，可以获得较高的效率。这一结果可以用实际工作来解释，因为ZnS的带隙很大程度上取决于制备条件和化学计量。综上所述，本文研究了缓冲层对CZTS太阳能电池中高效器件制造的影响。
{"title":"Prospects of Zinc Sulphide as an alternative buffer layer for CZTS solar cells from numerical analysis","authors":"F. Haque, N. Khan, K. S. Rahman, M. Islam, M. Alam, K. Sopian, N. Amin","doi":"10.1109/ICECE.2014.7026855","DOIUrl":"https://doi.org/10.1109/ICECE.2014.7026855","url":null,"abstract":"Zinc Sulphide (ZnS) is a promising candidate to be an alternative buffer layer to the commonly used cadmium sulphide (CdS) in CZTS solar cells. In this study, buffer layer parameters like layer thickness and buffer layer bandgap have been investigated by Analysis of Microelectronic and Photonic Structures (AMPS-1D) to find out the higher conversion efficiency. A promising result has been achieved with an efficiency of 14.49% (with Voc = 0.81 V, Jsc = 28.85 mA/cm2 and Fill factor = 67.5) by using ZnS as a buffer layer. It is also found that the high efficiency of CZTS absorber layer thickness is between 2 μm and 4 μm. From the simulation results, it is revealed that higher efficiency can be achieved for the buffer layer bandgap around 3.10 eV - 3.25 eV. This result can be explained by the practical work as the bandgap of ZnS is largely dependent on the preparation conditions and stoichiometry. In conclusion, numerous influences of buffer layer are investigated in CZTS solar cell that can lead to the fabrication of high efficiency devices.","PeriodicalId":335492,"journal":{"name":"8th International Conference on Electrical and Computer Engineering","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128319504","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}
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