Design and fabrication of six-volt vertically-stacked GaAs photovoltaic power converter.
Design and fabrication of six-volt vertically-stacked GaAs photovoltaic power converter.
复制标题
六伏垂直堆叠砷化镓光伏电源转换器的设计与制造
DOI：
10.1038/srep38044
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发表时间：
2016-11-30
影响因子：
4.6
通讯作者：
Dong J
中科院分区：
文献类型：
--
作者：
Zhao Y;Sun Y;He Y;Yu S;Dong J
设计并制作了一个6伏垂直叠层大电流GaAs光伏功率转换器（PPC），在单色光照明下输出功率超过1 W。N++-GaAs/P++-AlGaAs隧道结（TJ）结构已被用于连接该垂直堆叠PPC器件中的每个子电池。每个GaAs子电池的厚度已经基于使用从椭圆偏振测量获得的吸收系数计算具有808 nm波长的光子的吸收深度而导出。器件在808 nm非均匀CW激光照射下进行了表征，入射功率高达4.1 W。在非均匀（光纤耦合）单色照明下，在0.3 W时达到50.2%的最大转换效率，在4.1 W时下降到42.5%。最大功率点处的工作电压为5.5- 6.0V，取决于入射激光功率，并且在2.9W的激光功率下可以提取1.3W的输出电功率输出，并且最大电功率输出总计为1.72W。外量子效率（EQE）的测量表明，PPC的性能可以进一步提高通过细化子电池的厚度设计和提高TJ。
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.
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影响因子：
1.1
作者：
Sorokin, S. V.;Sedova, I. V.;Yablonskii, G. P.
通讯作者：
Yablonskii, G. P.
DOI：
10.1016/0379-6787(85)90080-8
发表时间：
1985-11-01
期刊：
SOLAR CELLS
影响因子：
--
作者：
HAYES, RE;GIBART, P;WAGNER, S
通讯作者：
WAGNER, S
影响因子：
3.3
作者：
Shan, Tiqiang;Qi, Xinglin
通讯作者：
Qi, Xinglin
影响因子：
3.2
作者：
Takamoto, T;Yumaguchi, M;Al-Jassim, M
通讯作者：
Al-Jassim, M
DOI：
10.1016/0379-6787(91)90027-m
发表时间：
1991-06-01
期刊：
SOLAR CELLS
影响因子：
--
作者：
FAINE, P;KURTZ, SR;OLSON, JM
通讯作者：
OLSON, JM