Flexible carbon nanotube/mono-crystalline Si thin-film solar cells

被引：0
作者：
Huanhuan Sun
Jinquan Wei
Yi Jia
Xian Cui
Kunlin Wang
Dehai Wu
机构：
[1] Tsinghua University,Key Laboratory for Advanced Materials Processing Technology of Education Ministry; State Key Laboratory of New Ceramic and Fine Processing, School of Materials Science and Engineering
[2] Beijing University of Chemical Technology,College of Materials Science and Engineering
[3] Tsinghua University,Department of Mechanical Engineering
来源：
Nanoscale Research Letters | / 9卷
关键词：
Carbon nanotubes; Si thin film; Solar cell; Heterojunction;
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学科分类号：
摘要：
Flexible heterojunction solar cells were fabricated from carbon nanotubes (CNTs) and mono-crystalline Si thin films at room temperature. The Si thin films with thickness less than 50 μm are prepared by chemically etching Si wafer in a KOH solution. The initial efficiency of the thin-film solar cell varies from approximately 3% to 5%. After doping with a few drops of 1 M HNO3, the efficiency increases to 6% with a short-circuit current density of 16.8 mA/cm2 and a fill factor of 71.5%. The performance of the solar cells depends on the surface state and thickness of Si thin films, as well as the interface of CNT/Si. The flexible CNT/Si thin-film solar cells exhibit good stability in bending-recovery cycles.
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