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材料导报  2022, Vol. 36 Issue (4): 20110082-6    https://doi.org/10.11896/cldb.20110082
  无机非金属及其复合材料 |
DBR结构设计与GaInP/GaInAs/Ge太阳电池性能关系
高慧1,2, 杨瑞霞1,*
1 河北工业大学电子信息工程学院,天津 300401
2 中国电子科技集团公司第十八研究所,天津 300384
The Relationship Between the Design of the DBR Structure and the Performance of GaInP/GaInAs/Ge Solar Cell
GAO Hui1,2, YANG Ruixia1,*
1 School of Electronic Information Engineering ,Hebei University of Technology , Tianjin 300401, China
2 The 18th Research Institute of China Electronics Technology Group Corporation, Tianjin 300384, China
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摘要 空间太阳电池采用分布式布拉格反射(DBR)结构作为GaInAs中间子电池的背反射器,可以降低基区的厚度,进而提高电池的抗辐射能力。DBR的光学反射特性对该子电池的各项性能有很大的影响。本研究制备了三种不同反射特性的Al0.9Ga0.1As/Al0.1Ga0.9As DBR结构,并将它们应用在同一种GaInP/GaInAs/Ge晶格匹配的太阳电池,作为GaInAs中间子电池的背反射器。测试研究其对电池的光学反射率、光伏性能和辐射衰降性能的影响。研究表明:材料带隙分别为1.87 eV/1.40 eV/0.67 eV的三结太阳电池,随着DBR的中心波长从865 nm→875 nm→885 nm进行微调,这三种电池的光学反射率、光伏性能和辐射衰降性能均表现出规律性变化。电池的反射率出现了规律性红移,初始光伏效率逐渐升高,地球同步轨道剂量电子轰击实验后,电池的最终辐照衰降率也逐渐升高。同时,适当将DBR反射范围向长波方向微调,可以获得初始效率更高的电池,而寿命末期效率几乎相同,这一研究结果对高轨道空间项目全生命周期内的应用有很大的意义。
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高慧
杨瑞霞
关键词:  三结太阳电池  分布式布拉格反射  中心反射波长    
Abstract: The space solar cell adopts the distributed Bragg reflection (DBR) structure as the back reflector of the GaInAs subcell, which can reduce the thickness of the base region, thereby improving the radiation resistance of the whole structure. The optical reflection characteristics of DBR have a great influence on various performances of the subcells. In this study, three Al0.9Ga0.1As/Al0.1Ga0.9As DBR structures with different reflection characteristics were prepared and applied to the same GaInP/GaInAs/Ge lattice-matched solar cell as the back reflector of a GaInAs subcell. The research analyzes its influence on the optical reflectivity, photovoltaic performance and radiation attenuation performance of the tandem solar cells. The results show that,for solar cells with a material band gap of 1.87 eV/1.40 eV/0.67 eV, as the center reflection wavelength of the DBR is fine-tuned from 865 nm to 875 nm, and then 885 nm, the optical reflectance, photovoltaic performance and the radiation attenuation performance show regular changes. The reflectivity of the cells showed a regular red shift, and the initial photovoltaic efficiency performance changed from low to high. After the geosynchronous orbital dose electron bombardment experiment, the final radiation decay rate of the cells changed from low to high. At the same time, properly adjusting the reflection range of the DBR to the long-wave direction can obtain a higher initial efficiency, and the efficiency at the end of life has not significantly deteriorated, which has great significance for the application throughout the life cycle of a space project.
Key words:  triple junction solar cell    distributed bragg reflection    center reflection wavelength
出版日期:  2022-02-25      发布日期:  2022-02-28
ZTFLH:  TM914.4  
通讯作者:  yangrx@hebut.edu.cn   
作者简介:  高慧,河北工业大学博士研究生,就职于中国电子科技集团公司第十八研究所,主要从事高效GaAs太阳电池的研究。
杨瑞霞,河北工业大学教授,博士研究生导师,主要从事化合物半导体器件的研究。
引用本文:    
高慧, 杨瑞霞. DBR结构设计与GaInP/GaInAs/Ge太阳电池性能关系[J]. 材料导报, 2022, 36(4): 20110082-6.
GAO Hui, YANG Ruixia. The Relationship Between the Design of the DBR Structure and the Performance of GaInP/GaInAs/Ge Solar Cell. Materials Reports, 2022, 36(4): 20110082-6.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.20110082  或          http://www.mater-rep.com/CN/Y2022/V36/I4/20110082
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