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4 results on '"Wang Duxiang"'

3. The Epitaxial Growth of High Efficiency Inverted Metamorphic Triple Junction Solar Cell for CPV Application.

Author

Bi Jingfeng, Li Senlin, Liu Guanzhou, Yang Meijia, Li Mingyang, Xiong Weiping, Song Minghui, Lin Guijiang, Chen Wenjun, and Wang Duxiang

Subjects
EPITAXY, SOLAR cells, SOLAR concentrators, PHOTOVOLTAIC power systems, X-ray diffraction, ELECTRIC inverters
Abstract

In this paper, 3J-IMM solar cells were studied in comparison with 3J-LM solar cells grown by MOCVD. The structural characteristics were studied by HRXRD, HRTEM and SIMS, which showed a high crystal quality of the metamorphic sub-cell. The solar cell performance in terms of I-V curves and EQE was investigated between the different solar cells structures. The current of the IMM solar cell is almost equal to the LM 'monitor solar cell. Under AM 1.5D, 1000 suns conditions, an Isc of 14.29 A, Voc of 3.538 V, FF of 83.9%, and an efficiency of 42.3% were achieved for the 3J-IMM solar cell with a chip size of 1.0 cm2, which is an absolute 2.9% higher than that of a 3J-LM solar cell in conversion efficiency. The excess current contribution from the Ge bottom cell in the 3J-LM solar cells is eliminated, accompanied with a 0.3V increase in Voc for the 3J-IMM solar cells. [ABSTRACT FROM AUTHOR]

Published
2015
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4. Tilt Dependent PL and Fluorescence Spectra of InGaAsP/In[sub 0.5](GaAl)[sub 0.5]P Quantum Well.

Author

Wei, Jiyong, Huang, Baibiao, Yu, Yongqin, Zhou, Hailong, Pan, Jiaoqing, Zhang, Xiaoyang, Qin, Xiaoyan, Xia, Wei, Wang, Duxiang, Yue, Jinshun, and Ren, Zhongxiang

Subjects
QUANTUM wells, GALLIUM arsenide semiconductors, FLUORESCENCE
Abstract

By 532 nm laser pumped PL spectral and Xe pumped fluorescence spectral, characterized InGaAsP/In[sub 0.5](Ga[sub x]Al[sub 1-x])[sub 0.5]P quantum well on substrates 2°, 15° tilted to (110) the optical property dependence of substrates tilt. The PL wavelength varies from 755 nm of the quantum well on substrate of 2° to the 780 nm of the quantum well on substrate of 15°. From fluorescence excitation spectral to excite about 760 nm wavelength of quantum well, the absorption light peak wavelength is 508 nm in common, and has another absorption peak wavelength of 622 nm. Excited by 508 nm and 622 nm wavelength, the fluorescence spectral intensity of the 15° quantum well is about 300 and 10[sup 4] accordingly. Lifetime of charge recombination is about 1.26 ns for this material. [ABSTRACT FROM AUTHOR]

Published
2002
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