Design and optimization of GaAs photovoltaic converter for laser power beaming
Design and optimization of GaAs photovoltaic converter for laser power beaming
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DOI：
10.1016/j.infrared.2015.03.010
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发表时间：
2015-07-01
影响因子：
3.3
通讯作者：
Qi, Xinglin
中科院分区：
文献类型：
--
作者：
Shan, Tiqiang;Qi, Xinglin
GaAs光伏（PV）转换器在许多军事和工业应用中可用于将单色光转换成电力。本论文的工作是设计一种单色GaAs光伏转换器，用于耦合波长为790-840 nm的激光束，并优化其结构、层厚、发射极和基极的掺杂水平以及外延层。利用PC-1D对GaAs光伏转换器进行了优化建模计算。从最高效率的角度来看，最佳波长为840 nm，优化后的结构在该波长处的理论效率为61.8%。在808 nm激光功率下的实验结果表明，优化后的GaAs光伏激光转换器在5 W/cm ~ 2的功率下获得了53.23%的光电转换效率。最后介绍了理想系数、反向饱和电流、串联电阻和并联电阻等关键参数的准确提取。这些参数的变化与光照强度的分析研究的基础上的一个二极管模型，这是必要的高性能光伏发电系统的设计。(C)2015 Elsevier B. V.版权所有。
GaAs photovoltaic (PV) converters are useful for the conversion of monochromatic light into electrical power in numerous military and industrial applications. The work of this paper is to design a monochromatic GaAs PV converter for coupling to laser beams in the wavelength of 790-840 nm and optimize its structure, layer thicknesses, doping levels of the emitter and base, and antireflection coating. Modeling calculations of the GaAs PV converter optimization are carried out using PC-1D. From the highest efficiency point of view, the best wavelength is 840 nm at which the optimized structure gives an efficiency of 61.8% theoretically. Experiment results under 808 nm laser power beaming show that high optical-to-electrical conversion efficiency of 53.23% at 5 W/cm(2) is achieved using the optimized GaAs PV laser converter. Finally, accurate extraction of the key parameters, viz, the ideality factor, reverse saturation current, series resistance and shunt resistance is introduced. Variations of these parameters with illumination intensity are also investigated analytically based on the one diode model, which are necessary for the design of a high performance PV generation system. (C) 2015 Elsevier B.V. All rights reserved.