弱光下锑基太阳电池的光谱响应与性能优化  

Spectral Response and Performance Optimization of Antimony Based Solar Cells Under Weak Light

作　　者：曹宇[1,2] 凌同[1,2] 曲鹏 王长刚 赵耀 那艳玲 江崇旭 胡子阳 周静[6] CAO Yu;LING Tong;QU Peng;WANG Chang-gang;ZHAO Yao;NA Yan-ling;JIANG Chong-xu;HU Zi-yang;ZHOU Jing(Key Laboratory of Modern Power System Simulation and Control&Renewable Energy Technology,Ministry of Education(Northeast Electric Power University),Jilin 132012,China;School of Electrical Engineering,Northeast Electric Power University,Jilin 132012,China;China Railway Design Corporation,Tianjin 300308,China;National Engineering Laboratory for Digital Construction and Evaluation Technology of Urban Rail Transit,Tianjin 300308,China;Department of Microelectronic Science and Engineering,Ningbo University,Ningbo 315211,China;School of Chemical Engineering,Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]现代电力系统仿真控制与绿色电能新技术教育部重点实验室(东北电力大学),吉林吉林市132012 [2]东北电力大学电气工程学院,吉林吉林市132012 [3]中国铁路设计集团有限公司,天津300308 [4]城市轨道交通数字化建设与测评技术国家工程实验室,天津300308 [5]宁波大学微电子科学与工程系,浙江宁波315211 [6]东北电力大学化学工程学院,吉林吉林市132012

出　　处：《光谱学与光谱分析》2024年第2期519-526,共8页Spectroscopy and Spectral Analysis

基　　金：国家自然科学基金项目(52172185,51772049);吉林省自然科学基金项目(YDZJ202201ZYTS390);吉林省教育厅科学技术研究项目(JJKH20220110KJ);城市轨道交通数字化建设与测评技术国家工程实验室开放课题基金项目(2021HJ05)资助。

摘　　要：锑基薄膜太阳电池因其制备方法简单,原材料丰富,光电性能稳定等优点而得到了快速发展。其中锑基吸光层材料(硫化锑、硫硒化锑、硒化锑)具有高吸收系数特点,因而在室内或者水下等弱光条件下具有相当大的应用潜力。通过构造两种衰减光谱以研究新型锑基薄膜太阳电池在弱光下的光电响应。首先通过厚度调节硒化锑太阳电池的吸光能力,发现当吸光层厚度较薄时,电池的光电转换效率存在较大差值;而当吸光层厚度过厚时,电池性能又因载流子复合的增大而降低。在吸光层厚度处于合适的0.4~1.2μm之间时,硒化锑太阳电池在长波衰减光谱和短波衰减光谱下都能获得高于16%的转换效率。然后通过硒含量调节锑基太阳电池的光谱吸收范围,发现长波衰减光谱下,锑基太阳电池的器件性能显著高于标准光谱,并且在20%~40%硒含量下能够获得最佳的转换效率。而在短波衰减光谱下,锑基太阳电池的最佳性能出现在硒含量为60%的情况下。因而在弱光条件下,锑基太阳电池的最佳硒含量需要通过具体的光谱特性确定。最后研究了两种衰减光谱下,硫化锑/硒化锑双结叠层太阳电池的光谱响应特性。发现在短波衰减光谱下,叠层太阳电池效率会随着总厚度的增加而增加。而在长波衰减光谱下,叠层太阳电池的最佳性能能够一直保持在较高水平。当叠层电池总厚度为2μm,且硫化锑顶电池厚度在0.5~1.2μm之间时,器件在两种衰减光谱下都能够实现光谱能量在两个子电池中的合理分配,使得叠层电池效率能够保持在20%以上。通过该研究对锑基太阳电池器件结构的合理设计,能够保证单结和双结器件在不同弱光条件下的高性能输出,为高环境适应性的锑基薄膜太阳电池的研发提供技术支持。Antimony-based thin film solar cells have rapidly developed because of their simple preparation method,abundant raw materials,and stable photoelectric performance.Among them,antimony-based light-absorbing layer materials(antimony sulfide,antimony selenide sulfide,and antimony selenide)have high absorption coefficients;thus,they have considerable application potential in indoor or underwater weak light conditions.In this study,two types of attenuation spectra are constructed to study the photoelectric response of a new antimony-based thin film solar cell under weak light.First,the light absorption capacity of the antimony selenide solar cell is adjusted through thickness.It is inferred that when the light absorber is thin,the photoelectric conversion efficiency of the cell has a significant difference.Moreover,when the light absorber is too thick,the device performance is reduced due to the carrier recombination increase.The conversion efficiency of the antimony selenide solar cell is higher than 16%in both the long-and short-wave attenuation spectra when the thickness of the light absorber is in the appropriate range of 0.4~1.2μm.Subsequently,the selenium content adjusts the spectral absorption range of the antimony-based solar cell.It is found that the device performance of the antimony-based solar cell is significantly higher than the standard spectrum under the long-wave attenuation spectrum,and the best conversion efficiency is obtained at 20%~40%selenium content.In the short-wave attenuation spectrum,the best performance of the antimony-based solar cells appears when the selenium content is 60%.Therefore,specific spectral characteristics should determine,the optimal selenium content of antimony-based thin film solar cells in weak light conditions.Finally,the spectral response characteristics of antimony sulfide/antimony selenide double junction tandem solar cells are studied under two types of attenuation spectra.It is found that the efficiency of the tandem solar cells increases with the increase in the to

关 键 词：锑基薄膜太阳电池 衰减光谱 弱光响应 吸光层厚度 转换效率 

分 类 号：TM914.422[电气工程—电力电子与电力传动]