Fabrication and characterization of flexible solar cell from electrodeposited Cu2O thin film on plastic substrate
Fabrication and characterization of flexible solar cell from electrodeposited Cu2O thin film on plastic substrate
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DOI：
10.1016/j.solener.2015.11.002
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发表时间：
2015-12-01
期刊：
影响因子：
6.7
通讯作者：
Bakin, Andrey
中科院分区：
文献类型：
--
作者：
Abdelfatah, Mahmoud;Ledig, Johannes;Bakin, Andrey
本文首次采用在塑料衬底上电沉积Cu_2 O薄膜和溅射ZnO：Al层的方法制备了p-Cu_2 O/ZnO/AZO柔性异质结太阳能电池。采用原子层沉积（ALD）技术在薄膜中插入5 nm的ZnO作为缓冲层。通过拉曼光谱和扫描电子显微镜对异质结太阳能电池进行了表征，发现Cu 2 O薄膜具有金字塔形状和声子模式。进行电流电压（J-V）、电容电压（C-V）和外量子效率（EQE）测量以了解异质结性质。该太阳能电池器件表现出0.897 +/-0.005%的功率转换效率，开路电压为V-oc=300 mV，短路电流密度为J（sc）= 6.819 +/-0.048 mA cm（-2），填充因子为FF = 0.439 +/-0.006。根据反向偏压C-V测量，结处的内建电位和受体浓度的值分别为0.37 V和6.67 × 10（16）cm（-3）。(C)2015爱思唯尔有限公司版权所有。
We present here for the first time the fabracition of a p-Cu2O/ZnO/AZO flexible heterojunction solar cell by electrodeposition of Cu2O thin film on a plastic substrate and sputtering of ZnO:Al layer. The Atomic Layer Deposition (ALD) has been employed to insert 5 nm ZnO as buffer layer. The heterojunction solar cell was characterized by Raman spectroscopy and scanning electron microscopy that show pyramidal shape and phonon modes for Cu2O thin film. Current voltage (J-V), capacitance voltage (C-V) and the external quantum efficiency (EQE) measurements were performed to understand the heterojunction properties. The solar cell device exhibits a power conversion efficiency of 0.897 +/- 0.005% with an open circuit voltage of V-oc=300 mV, a short circuit current density of J(sc) = 6.819 +/- 0.048 mA cm(-2) and a fill factor of FF = 0.439 +/- 0.006. The values of the built-in potential and the acceptor concentration at the junction were estimated from the reverse bias C-V measurement to be 0.37 V and 6.67 x 10(16) cm(-3), respectively. (C) 2015 Elsevier Ltd. All rights reserved.