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题名: Design and fabrication of six-volt vertically-stacked GaAs photovoltaic power converter
作者: Zhao, Yongming(赵勇明); Sun, Yurun(孙玉润); He, Yang(何洋); Yu, Shuzhen(于淑珍); Dong, Jianrong(董建荣)
通讯作者: Dong, Jianrong(董建荣)
刊名: Scientific Reports
发表日期: 2016
DOI: 10.1038/srep38044
卷: 6
收录类别: SCI
文章类型: 期刊论文
部门归属: 纳米器件及相关材料研究部
英文摘要: A six-volt vertically-stacked, high current GaAs photovoltaic power converter (PPC) has been designed and fabricated to produce output power over 1 W under monochromatic illumination. An N++-GaAs/P++-AlGaAs tunnel junctions (TJs) structure has been used for connecting each sub-cell in this vertically-stacked PPC device. The thickness of the each GaAs sub-cell has been derived based on the calculation of absorption depth of photons with a wavelength of 808 nm using absorption coefficient obtained from ellipsometry measurements. The devices were characterized under non-uniform CW laser illumination at 808 nm with incident power up to 4.1 W. A maximum conversion efficiency of 50.2% was achieved at 0.3 W under non-uniform (coupled in optical fiber) monochromatic illumination, dropping to 42.5% at 4.1 W. The operating voltage at the maximum power point is 5.5-6.0 V, depending on the incident laser power, and an output electrical power output of 1.3 W can be extracted at a laser power of 2.9 W and the maximum electrical power output amounts to 1.72 W. The external quantum efficiency (EQE) measurement indicates that the performance of PPC can be further improved by refining the design of the thickness of sub-cells and improving TJs.
关键词[WOS]: SOLAR-CELLS ; TUNNEL-DIODE ; LASER-BEAMS ; TRANSMISSION ; ELECTRICITY ; SIMULATION ; JUNCTIONS ; NM
语种: 英语
JCR小类分区: 二区
WOS记录号: WOS:000389204900001
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinano.ac.cn/handle/332007/4537
Appears in Collections:纳米器件及相关材料研究部_董建荣团队_期刊论文

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Recommended Citation:
Zhao, Yongming,Sun, Yurun,He, Yang,et al. Design and fabrication of six-volt vertically-stacked GaAs photovoltaic power converter[J]. Scientific Reports,2016,6.
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