Conversion efficiency of photon enhanced thermionic emission solar converters with exponential doping GaAs cathodes

被引：0

作者：

Tang, Wei-Dong ^{[1
,2
]}

Yang, Wen-Zheng ^{[1
]}

Yang, Yang ^{[1
,2
]}

Sun, Chuan-Dong ^{[1
]}

Cai, Zhi-Peng ^{[1
,2
]}

机构：

[1] State Key Laboratory of Transient Optics and Photonics, Xi'an Institute of Optics and Precision Mechanics, Chinese Academy of Sciences

[2] University of Chinese Academy of Sciences

来源：

Guangzi Xuebao/Acta Photonica Sinica | 2014年 / 43卷 / 06期

关键词：

Conversion efficiency; Exponential doping; GaAs cathode; PETE; Solar converter;

D O I：

10.3788/gzxb20144306.0625002

中图分类号：

学科分类号：

摘要：

Photon-enhanced thermionic emission solar energy converter is a new highly efficient solar energy utilization technologies. An exponential doping GaAs material was presented as the cathode of photon-enhanced thermionic emission solar converter. The conversion efficiencies of the photon-enhanced thermionic emission solar devices with exponential doping GaAs were theoretically analyzed by using the energy-balance and diffusion-drift-emission models. The results show that exponential doping GaAs prominently enhances photon-enhanced thermionic emission conversion, and the efficiency of photon-enhanced thermionic emission solar converters with exponential doping GaAs cathodes is a monotonically increasing function of sun concentration and a monotonically decreasing function of cathode surface recombination velocities. The efficiency of the converter can reach 30% at a flux concentration larger than 200 suns and surface recombination velocities maintained at fewer than 104 cm/s.

引用

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