title: Composite Transparent Electrode of Graphene Nanowalls and Silver Nanowires on Micropyramidal Si for High-Efficiency Schottky Junction Solar Cells.
abstract: The conventional graphene-silicon Schottky junction solar cell inevitably involves the graphene growth and transfer process, which results in complicated technology, loss of quality of the graphene, extra cost, and environmental unfriendliness. Moreover, the conventional transfer method is not well suited to conformationally coat graphene on a three-dimensional (3D) silicon surface. Thus, worse interfacial conditions are inevitable. In this work, we directly grow graphene nanowalls (GNWs) onto the micropyramidal silicon (MP) by the plasma-enhanced chemical vapor deposition method. By controlling growth time, the cell exhibits optimal pristine photovoltaic performance of 3.8%. Furthermore, we improve the conductivity of the GNW electrode by introducing the silver nanowire (AgNW) network, which could achieve lower sheet resistance. An efficiency of 6.6% has been obtained for the AgNWs-GNWs-MP solar cell without any chemical doping. Meanwhile, the cell exhibits excellent stability exposed to air. Our studies show a promising way to develop simple-technology, low-cost, high-efficiency, and stable Schottky junction solar cells.
authors: Chongqing Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences , Chongqing 400714, PR China.|School of Mechanical Engineering, University of Science and Technology Beijing , Beijing 100083, PR China.
authors: Tianpeng
authors: T
authors: Jiao
authors: Chongqing Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences , Chongqing 400714, PR China.|Key Laboratory for the Physics and Chemistry of Nanodevices& Department of Electronics, Peking University , Beijing 100871, PR China.
authors: Jian
authors: J
authors: Liu
authors: Chongqing Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences , Chongqing 400714, PR China.
authors: Dapeng
authors: D
authors: Wei
authors: School of Mechanical Engineering, University of Science and Technology Beijing , Beijing 100083, PR China.
authors: Yanhui
authors: Y
authors: Feng
authors: Chongqing Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences , Chongqing 400714, PR China.
authors: Xuefen
authors: X
authors: Song
authors: Chongqing Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences , Chongqing 400714, PR China.
authors: Haofei
authors: H
authors: Shi
authors: Chongqing Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences , Chongqing 400714, PR China.
authors: Shuming
authors: S
authors: Jia
authors: Key Laboratory for the Physics and Chemistry of Nanodevices& Department of Electronics, Peking University , Beijing 100871, PR China.
authors: Wentao
authors: W
authors: Sun
authors: Chongqing Key Laboratory of Multi-scale Manufacturing Technology, Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences , Chongqing 400714, PR China.
authors: Chunlei
authors: C
authors: Du
keywords: composite electrode; graphene nanowalls; high efficiency; one-step growth; silver nanowires; solar cells; stability; three-dimensional Si