倒置生长赝形高效四结太阳电池的辐照损伤行为与机理研究

项目名称： 倒置生长赝形高效四结太阳电池的辐照损伤行为与机理研究

项目编号： No.11475049

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 数理科学和化学

项目作者： 吴宜勇

作者单位： 哈尔滨工业大学

项目金额： 82万元

中文摘要： 高效、轻质空间电源需求及先进微电子制造技术催生了倒置生长赝形多结太阳电池的快速发展，目前倒置式III-V族四结太阳电池（简称IMM四结电池）的制备技术已经基本成熟。作为空间应用，迫切需要深入研究IMM四结太阳电池空间带电粒子辐照效应与损伤机理。本项目基于这一需求，系统研究IMM四结电池及其InxGa1-xAs子电池在空间电子和质子辐照条件下电性能退化规律，探索不同能量电子和质子辐照性能退化的等效关系。利用光谱响应谱、光荧光谱、深能级瞬态谱、透射电子显微镜等分析方法研究IMM四结电池及其InxGa1-xAs子电池中辐照缺陷形成、演化及其对电性能退化的影响规律，揭示InxGa1-xAs子电池成分对电池辐照损伤和性能退化的影响机制，以及在具有复杂组成和多层外延结构的IMM四结电池中决定辐照损伤和性能退化的主要因素，为提高IMM四结电池的抗辐照性能而进一步优化电池组成和结构提供理论依据。

中文关键词： 空间辐射；倒置式四结太阳电池；辐照效应；损伤机理；电性能退化行为

英文摘要： Due to great requirements for space solar cell/panel with high efficiency and power/mass ration and developed micro-electronics technology, it spurs fast development of multi-junction solar cell using inverted epitaxial technology. Presently, it is getting matured to fabricate some kind of inverted metamorphic III-V group 4-junction solar cells (IMM 4J solar cell). As for the space applications, it is essential in theory and further application to study the space-particle irradiation effects and damage mechanisms of the IMM 4J solar cells. Based on these requirements, we will systematically investigate the electrical degradation behaviors of IMM 4J solar cells under irradiations of electrons and protons, and then explore the equivalent relationships of electrical degradation of IMM 4J solar cell and its InxGa1-xAs sub-cells irradiated by electrons and protons with various energies. In this project, irradiated defects in IMM 4J solar cell and its InxGa1-xAs sub-cells will be also characterized to study their formation, corresponding evolution processes using complementary analytical methods such as spectral response spectra, opto- luminescence spectra, deep level transient spectra and transmission electron microscopy et.al. Thus we could further expose the effects of composition (or band gap) of InxGa1-xAs sub-cell on the irradiated damage behaviors, and determine the main factors of irradiation damage and electrical degradation in the IMM 4J solar cell with complicated compositions and multilayer epitaxial structures. All of the investigated results would become fundamental supports to optimize the structures and procedures for improvement of anti-irradiation damage of IMM 4J solar cells.

英文关键词： Space Irradiation;IMM 4J solar cell;irradiation effects;damage mechanisms;Degradation behavior of electrical property