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2016 23rd International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)最新文献

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Fully printable mesoscopic perovskite solar cells; effect of NiO layer on the device performance 完全可打印介观钙钛矿太阳能电池;NiO层对器件性能的影响
Nirmal Peilis, G. Mizuta, H. Kanda, Tomoya Nishina, S. Ito, H. Segawa
Developing low-cost hole transporting materials or hole-conductor free mesoscopic Perovskite solar cells (PSCs) by replacing the noble metal-based counter electrodes with inexpensive and abundantly available materials is a great interest in Photovoltaic industry. Herein, we fabricated fully printable low-cost mesoscopic PSCs with carbon counter electrode using mesoporous TiO2 and NiO layers as electron and hole selective contacts respectively. The influence of NiO layer on the charge transfer processes in printable PSC was studied by the electrochemical impedance spectroscopy. Our study confirmed that the NiO layer promises to greatly enhance the device performance and stability by extracting photo-generated holes efficiently than in a device without the NiO layer.
利用廉价且丰富的材料替代贵金属基对电极,开发低成本的空穴传输材料或无空穴导体介观钙钛矿太阳能电池(PSCs)是光伏产业关注的热点。本文采用介孔TiO2和NiO层分别作为电子选择触点和空穴选择触点,制备了具有碳对电极的完全可打印的低成本介孔PSCs。采用电化学阻抗谱法研究了NiO层对可打印PSC中电荷转移过程的影响。我们的研究证实,与没有NiO层的器件相比,NiO层有望通过有效地提取光产生的孔来大大提高器件的性能和稳定性。
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引用次数: 1
Effects of molybdenum trioxide thickness of organic photovoltaic with silver anode 三氧化钼厚度对银阳极有机光伏的影响
Chien-Liang Lin, Tien‐Lung Chiu, Chia-Hsun Chen, Chi-Fang Lin, Jiu-Haw Lee
We demonstrated the layer thickness effects of molybdenum-trioxide (MoO3) as buffer layer inserting at the interface between silver anode and organic material of a top-incident organic photovoltaic (OPV). The OPV structure contained active bilayer layers using 1,1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC) and fullerene (C70). In this study, we obtained an OPV with 5-nm MoO3 showing the greater power conversion efficiency of 2.78%. In addition, this optimized OPV result was caused from the greater short circuit current (Jsc of 11.35 mA/cm2) and fill factor (FF of 47.12).
我们展示了三氧化钼(MoO3)作为缓冲层插入到顶入射有机光伏(OPV)的银阳极和有机材料之间的层厚效应。OPV结构包含由1,1-二[(二-4-甲苯)苯基]环己烷(TAPC)和富勒烯(C70)组成的活性双分子层。在本研究中,我们获得了具有5 nm MoO3的OPV,其功率转换效率更高,为2.78%。此外,该优化的OPV结果是由较大的短路电流(Jsc为11.35 mA/cm2)和填充因子(FF为47.12)引起的。
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引用次数: 0
Investigations on device design parameters of all-oxide transparent charge-trap memory thin-film transistors 全氧化物透明电荷阱存储薄膜晶体管器件设计参数研究
Da-Jeong Yun, Han-Byeol Kang, Sung‐Min Yoon
Charge-trap memory thin film transistors employing In-Ga-Zn-O thin films as active channel and charge-trap layers (CTLs) were fabricated and characterized. To optimize process conditions, the design parameters were categorized into two parts. First, the thickness effects of double-layered tunneling oxide were examined and the 5 nm/5 nm configuration was chosen for guaranteeing process window and device performance. Secondly, the CTL thickness effects were investigated and the device using 30 nm-thick CTL showed most desirable behaviors including superior memory operation and device uniformity. The CTL geometry was also found to have significant impact on nonvolatile memory operations.
采用In-Ga-Zn-O薄膜作为有源沟道和电荷阱层制备了电荷阱存储薄膜晶体管,并对其进行了表征。为了优化工艺条件,将设计参数分为两部分。首先,研究了双层隧道氧化物的厚度效应,并选择了5nm / 5nm结构,以保证工艺窗口和器件性能。其次,研究了CTL厚度对器件性能的影响,发现使用30 nm厚CTL的器件表现出优异的存储性能和器件均匀性。CTL几何形状也被发现对非易失性存储器操作有显著影响。
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引用次数: 0
Brain-like synaptic operations of thin-film transistors using In-Ga-Zn-O active channel and PVP-SBA electrolytic gate insulator In-Ga-Zn-O有源沟道和PVP-SBA电解栅绝缘体薄膜晶体管的类脑突触操作
Yeo-Myeong Kim, Eom-Ji Kim, W. Lee, Jiyoung Oh, Sung‐Min Yoon
We proposed a synapse thin film transistors with a bottom-gate structure composed of an In-Ga-Zn-O (IGZO) active channel and a poly 4(vinylphenol)-sodium beta-alumina (PVP-SBA) gate insulator. The physical and electrical properties of the PVP-SBA were demonstrated as an electrolytic gate insulator for the synapse TFTs. Paired-pulse facilitation (PPF), short-term memory (STM), and long-term memory (LTM) operations were successfully confirmed in the fabricated synapse TFTs, in which output drain currents were effectively modulated with various input pulse conditions owing to the electrostatic coupling between the carriers in IGZO channel and sodium ions in PVP-SBA in the STM operation and electrochemical doping in the LTM operation, respectively.
我们提出了一种由In-Ga-Zn-O (IGZO)有源通道和聚4(乙烯基酚)-钠-氧化铝(PVP-SBA)栅极绝缘体组成的下栅极结构的突触薄膜晶体管。PVP-SBA的物理和电学性能被证明是突触tft的电解栅绝缘体。对脉冲促进(PPF)、短期记忆(STM)和长期记忆(LTM)操作在制备的突触tft中得到了成功的证实,其中,在STM操作和LTM操作中,分别由于IGZO通道中的载流子与PVP-SBA中的钠离子之间的静电耦合,输出漏极电流可以有效地调制各种输入脉冲条件。
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引用次数: 1
Reducing roll-off effect of efficient green quantum-dot light-emitting diodes via composition-gradient thick-shell quantum dots 利用成分梯度厚壳量子点降低高效绿色量子点发光二极管的滚转效应
Hoang-Tuan Vu, Y. Su, Chun-Yuan Huang, H. Yu, R. Chiang, Chih-Jung Chen
In this study, we investigated the stable and efficient quantum-dot light emitting diodes (QLEDs) under high driving current by using composition-gradient thick-shell CdSe@ZnS/ZnS QDs. Thick-shell QDs with low defective structure can effectively avoid the electron-hole pairs from nonradiative Auger recombination and prevent thermal-stress-induced expansion at high driving current. Consequently, roll-off effect in electroluminescent feature can be reduced almost two times. Moreover, the maximum current efficiency of thick-shell-device is 10.3 cd/A, which much higher than 1.57 cd/A in thin-shell-device.
在本研究中,我们利用成分梯度厚壳CdSe@ZnS/ZnS量子点发光二极管,研究了在高驱动电流下稳定高效的量子点发光二极管。具有低缺陷结构的厚壳量子点可以有效地避免非辐射俄歇复合产生的电子-空穴对,防止高驱动电流下热应力引起的膨胀。因此,电致发光特性的滚降效应可以降低近2倍。厚壳器件的最大电流效率为10.3 cd/A,远高于薄壳器件的1.57 cd/A。
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引用次数: 0
Enhancement of gate-bias and current stress stability of P-type SnO thin-film transistors with SiNx/HfO2 passivation layers SiNx/HfO2钝化层增强p型SnO薄膜晶体管的栅偏置和电流应力稳定性
Shu-Ming Hsu, Yun-Shiuan Li, Min-Sheng Tu, Jyun-Ci He, I. Chiu, Pin-Guang Chen, Min-Hung Lee, Jian-Zhang Chen, Cheng
In this letter, we report enhanced gate-bias and current stress stability of p-type SnO thin-film transistors passivated with SiNx/HfO2 layers. The improvement is primarily attributed to the effective suppression of bias-induced adsorption of oxygen molecules on the back-channel surface by the presence of passivation layers. Under the gate-bias stress of 10 V and -10 V for 10000 s, the threshold voltage shifts for the passivated TFT are 0.75 V and -0.42 V respectively, while the corresponding values for the unpassivated one are 1.24 V and -0.77 V Under the current stress of 2.5 μA for 10000 s, the threshold voltage shift is -0.29 V for the passivated TFT and -0.63 V for the unpassivated one.
在这封信中,我们报告了SiNx/HfO2层钝化的p型SnO薄膜晶体管的栅极偏置和电流应力稳定性增强。这种改进主要归功于钝化层的存在有效地抑制了偏置诱导的氧分子在后通道表面的吸附。在10 V和-10 V的栅极偏置应力下,钝化TFT的阈值电压位移分别为0.75 V和-0.42 V,而未钝化TFT的阈值电压位移分别为1.24 V和-0.77 V。在2.5 μA的电流应力下,钝化TFT的阈值电压位移分别为-0.29 V和-0.63 V。
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引用次数: 0
Efficient red phosphorescent OLEDs employing 2-phenylcarbazoles-based hole transport materials 采用2-苯基咔唑基空穴传输材料的高效红色磷光oled
Chih‐Hao Chang, G. Krucaite, Dain Lo, Yun-Lan Chen, Chu-Chun Su, Tzu-Chun Lin, J. Gražulevičius, L. Peciulyte, S. Grigalevicius
A new series of 9-hexylcarbazole-based hole transporting materials (HTMs) with naphthyl or pyrenyl substitutions (i.e. compounds 1 and 2) were synthesized and characterized. Compound 2 possesses an adequate ionization potential and triplet energy gap of 5.54 eV and 2.48 eV respectively, which makes 2 a suitable HTM for use in red phosphorescent organic light-emitting diodes (OLEDs). In contrast, a rather higher ionization potential of 1 was estimated to be 5.72 eV, thus the p-type conducting dopant should be introduced in device fabrication. The respective peak efficiencies of compounds 1 and 2-based OLEDs with the p-type dopant were recorded at 15.4 % (26.0 cd/A and 24.2 lm/W) and 17.3 % (26.1 cd/A and 19.1 lm/W), demonstrating their high potential for EL applications.
合成并表征了一系列以萘基或芘基取代的9-己基咔唑基空穴输运材料(即化合物1和2)。化合物2具有足够的电离势和三态能隙,分别为5.54 eV和2.48 eV,是一种适合用于红色磷光有机发光二极管(oled)的HTM。相比之下,估计电离电位1较高,为5.72 eV,因此应在器件制造中引入p型导电掺杂剂。p型掺杂的化合物1和化合物2基oled的峰值效率分别为15.4% (26.0 cd/A和24.2 lm/W)和17.3% (26.1 cd/A和19.1 lm/W),显示了它们在发光二极管应用中的巨大潜力。
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引用次数: 0
Extraction efficiency of organic light emitting diodes with two-dimensional photonic quasi-crystal structure 二维光子准晶体结构有机发光二极管的萃取效率
Mei-Ying Chang, Chun-Chiao Lin, Ming-Yuan Huang
In this study, we inserted a two-dimensional (2D) photonic quasi-crystal (PQC) structure into the OLED devices for light extraction. The 2-D PQC structure was fabricated on the glass substrate by simple way of nanoimprinting. To decrease the roughness of the substrate, we used the polymer layer to cover and planarize the PQC structure on the glass substrate, and then, we fabricated the internally planarized green OLEDs. The internally planarized green OLEDs show a great enhancements of the external quantum efficiency by 20.0% compared to the normal green OLEDs. The results can attribute to the light out-coupling effect in the OLED via the 2-D PQC structure to release the generated light trapped in the wave guide mode due to the total internal reflection (TIR).
在这项研究中,我们将二维光子准晶体(PQC)结构插入到OLED器件中进行光提取。采用简单的纳米印迹技术在玻璃基板上制备了二维PQC结构。为了降低基板的粗糙度,我们在玻璃基板上使用聚合物层覆盖PQC结构并使其平面化,然后我们制作了内部平面化的绿色oled。与普通绿色oled相比,内部平面化绿色oled的外量子效率提高了20.0%。该结果可归因于OLED中的光外耦合效应,通过二维PQC结构释放出由于全内反射(TIR)而被困在波导模式中的光。
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引用次数: 0
High mobility SnO2 TFT for display and future IC 用于显示和未来集成电路的高迁移率SnO2 TFT
A. Chin, C. Shih, Chun-Fu Lu, W. Su
Very high mobility of 149~189 cm2/Vs, large on-to-off current ratio (ION/IOff) of >7 orders of magnitude, fast turn-on sub-threshold swing of 110 mV/decade, and low power operation at 2~2.5 V were achieved in SnO2 TFT device at an ultra-thin SnO2 thickness of 4.5 nm. The device mobility of SnO2 TFT is higher than the best ZnO-based TFTs and CVD-grown multi-layers MoS2 MOSFETs. The reached mobility is already 0.7 times of universal mobility of SiO2/Si nMOSFET, operated typically at >1 MV/cm field. The very high mobility, simple low temperature process, and ultra-thin body SnO2 transistor should find its crucial role for high resolution display, future sub-10 nm nMOSFET and brain-mimicking 3D IC.
在厚度为4.5 nm的超薄SnO2 TFT器件中,实现了149~189 cm2/Vs的高迁移率、高达7个数量级的大通断电流比(ION/IOff)、110 mV/ 10年的快速导通亚阈值摆幅和2~2.5 V的低功耗工作。SnO2 TFT的器件迁移率高于最佳的zno基TFT和cvd生长的多层MoS2 mosfet。达到的迁移率已经是SiO2/Si nMOSFET通用迁移率的0.7倍,通常工作在>.1 MV/cm的电场下。高迁移率、简单低温工艺和超薄体SnO2晶体管将在高分辨率显示、未来的10nm以下nMOSFET和模拟大脑的3D集成电路中发挥重要作用。
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引用次数: 1
Mesh-based hologram synthesis for holographic wavefront printer 基于网格的全息波前打印机全息合成
Jisoo Hong, Youngmin Kim, Sunghee Hong, Choonsung Shin, Hoonjong Kang
Hologram synthesis for holographic wavefront printer using mesh information of target three-dimensional object can be implemented by applying spherical carrier wave for each hogel. With hogel-wise preprocessing of mesh information, the printed hologram successfully demonstrates the optical reconstruction of three-dimensional image composed of triangular meshes.
利用目标三维物体的网格信息合成全息波前打印机的全息图,可以通过对每个全息点施加球面载波来实现。通过网格信息的栅格预处理,打印全息图成功地展示了由三角形网格组成的三维图像的光学重建。
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引用次数: 0
期刊
2016 23rd International Workshop on Active-Matrix Flatpanel Displays and Devices (AM-FPD)
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