入射光谱及功率密度对GaSb热光伏电池性能的影响  

Effects of incident spectrum and radiative power intensity on the performance of GaSb thermophotovoltaic cell

作　　者：王新 陈学[1] 潘虹宇 柳秀丽 夏新林[1] WANG Xin;CHEN Xue;PAN Hong-Yu;LIU Xiu-Li;XIA Xin-Lin(School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学能源科学与工程学院,黑龙江哈尔滨150001

出　　处：《红外与毫米波学报》2023年第1期78-87,共10页Journal of Infrared and Millimeter Waves

基　　金：黑龙江省头雁创新团队计划(XNAUEA5640206420);中国博士后科学基金特别资助(2020T130145)。

摘　　要：热光伏发电技术具有高效率、高功率密度、适应热源广泛等特征,揭示其核心部件—电池芯片内部光电能量转换物理机制及影响规律,有利于系统性能的进一步提升。针对GaSb热光伏电池内部的光-电转换过程,建立了微观载流子输运模型,采用光-电耦合仿真方法对其性能参数进行了数值模拟。重点探究了入射辐射光谱特性及功率密度对电池性能的影响。结果表明:当入射光谱辐射功率相同时,电池转换效率随光谱变化呈现明显的非单调性,在波长1.42μm处达到峰值22.50%。同一光谱下,随着辐射功率密度提高,电池最大输出电功率密度等比例增大,转换效率也随之增大但增幅逐渐减小,波长1.42μm时增幅最大约4.85%。Thermophotovoltaic systems perform the characteristics of high efficiency,high power intensity and wide range of heat sources.To further enhance its energy conversion performance,the physical mechanism of opt-electrical conversion and its influence factors need to be analyzed in detail.Therefore,based on the spectral opt-electrical conversion process in the thermophotovoltaic cell,the microscopic carrier transport model in the cell is established.The coupled opt-electrical model is used for the simulation of GaSb thermophotovoltaic cell to explore the effects of spectral characteristics and power intensity of the incident radiation on the cell performance.The results show that under the fixed incident radiation power intensity,the energy conversion efficiency of the cell shows obvious non-monotonicity with the change of wavelength and the peak appears at 1.42μm.In addition,under the fixed wavelength,with the rise of radiation power intensity,the maximum electrical output power intensity accordingly increases while the rise of the energy conversion efficiency gradually slows down.At 1.42μm,the rise of the energy conversion efficiency reaches the maximum about 4.85%.

关 键 词：热光伏电池 辐射光谱 辐射功率 光-电耦合模拟 

分 类 号：TK121[动力工程及工程热物理—工程热物理]