
第 42 卷 第 8 期
2015 年 8 月
Vol. 42, No. 8
August, 2015
中 国 激 光
CHINESE JOURNAL OF LASERS
0802011-
Experimental Investigations of Laser Intensity and Temperature
Dependence of Single Crystal Silicon Photovoltaic Cell Parameters
Liu Xiaoguang Hua Wenshen Liu Xun
Department of Electronic and Optical Engineering, Ordnance Engineering College, Shijiazhuang, Hebei 050003, China
Abstract Photovoltaic cell performance determined by its parameters is of vital importance for laser wireless
power transmission system. The output characteristics of single crystal silicon photovoltaic cell illuminated by diode
laser operating at 940 nm are investigated. The relationship between output characteristics and two factors, i.e. laser
intensity and temperature, are studied. The results indicate that with the increasing of laser intensity, short-circuit
current increases linearly in low intensity levels and then begins to saturate. Both open-circuit voltage and efficiency
has a maximum value with increasing laser intensity. The experimental maximum efficiency of photovoltaic cell
at 293 K is 29.49%. In the range of 283 K~308 K, short-circuit current is independent of temperature in low intensity
levels and decreases linearly in high intensity levels. Open-circuit voltage and efficiency decrease linearly with
increasing temperature. However, their temperature coefficients vary with the variation in laser intensity. The
relationship between series resistance and efficiency is also simulated. It shows that small series resistance and
the reduction of recombination for photovoltaic cell are essential for efficient energy conversion under high intensity
laser illumination.
Key words laser optics; output characteristics; experimental research; single crystal silicon photovoltaic cell;
wireless power transmission
OCIS codes 140.3460; 140.2020; 350.4600
激光辐照单晶硅光伏电池输出特性的实验研究
刘晓光 华文深 刘 恂
军械工程学院电子与光学工程系, 河北 石家庄 050003
摘要 光伏电池性能对激光无线能量传输系统设计有重要影响。采用 940 nm 激光辐照单晶硅光伏电池,研究了光
伏电池输出特性随激光强度和电池温度的变化规律。研究结果表明,短路电流随激光功率增加呈现线性增加后饱
和的趋势。开路电压和效率与激光功率的关系则呈单峰特性。实验测得光伏电 池在 293 K 时最大效率为 29.49%。
在 283 K~308 K 范围内,激光功率较低时,短路电流受温度影响较小,基本保持不变。激光功率较大时,短路电流随
温度升高而线性下降。开路电压和效率则随温度升高而线性下降,但下降速率随激光强度的变化而变化。同时仿
真了光伏电池效率与串联电阻的关系。结果表明,在强激光辐照下,减小串联电阻,降低复合电流的大小是提高单
晶硅光伏电池效率的两个重要方面。
关键词 激光光学; 输出特性; 实验研究; 单晶硅光伏电池; 无线能量传输
中图分类号 O436 文献标识码 A
doi: 10.3788/CJL201542.0802011
收稿日期: 2015-03-10; 收到修改稿日期: 2015-04-08
作者简介: 刘晓光(1990—),男,硕士研究生,主要从事激光无线能量传输方面的研究。E-mail: graduatelxg@163.com
导师简介: 华文深(1967—),男,博士,副教授,硕士生导师,主要从事光电技术及光学信息处理等方面的研究。
E-mail: huawensh@126.com
1 Introduction
Laser wireless power transmission is a process by which electricity can be sent from the power source to a load, without
1