【摘要】 针对钙钛矿/硅叠层太阳能电池面临的界面电荷提取效率低和稳定性不足等问题，提出一种芳香族配体PEABr对钙钛矿/硅叠层太阳能电池性能的调控机制，以苯乙胺溴盐(PEABr)为代表的芳香族配体材料为研究对象，探究PEABr添加量对叠层电池性能的影响。通过SEM、XRD、PL光谱及J-V曲线等测试分析发现，当PEABr的摩尔分数为0.35%时，电池性能达到最佳：钙钛矿层结晶度高、表面致密光滑，缺陷态密度降低，载流子传输效率提升，开路电压达到1.2 V,填充因子为75%,光电转换效率提升至24.5%。相较于未修饰的电池，经0.35%摩尔分数PEABr修饰的电池，其光电转换效率提升了约32.4%。研究表明，芳香族配体材料的合理引入可优化界面结构与能级匹配，为提升叠层电池的效率与稳定性提供了新路径。更多还原

【Abstract】 Aiming at the problems of low extraction efficiency and insufficient stability of interfacial charges in perovskite/silicon tandem solar cells, this study proposed a regulation mechanism of the aromatic ligand PEABr on the performance enhancement of perovskite/silicon tandem solar cells. Taking the aromatic ligand material represented by phenylethylamine bromide(PEABr) as the research object, the influence of its additive dosage on the performance of tandem solar cells was investigated. Through the analysis of SEM, XRD, PL spectrum and J-V curve, it was found that when the mole fraction of PEABr was 0.35%, the battery exhibited optimal performance: the perovskite layer had high crystallinity, the surface was compact and smooth, the defect state density was reduced, the carrier transport efficiency was improved, the open circuit voltage was 1.2 V, the filling factor was 75%, and the photoelectric conversion efficiency was improved to 24.5%. Compared with the unmodified battery, the photoelectric conversion efficiency of the battery modified with 0.35% PEABr was improved by about 32.4%. The results show that the reasonable introduction of aromatic ligand materials can optimize the interface structure and energy level matching, which provides a new way to improve the efficiency and stability of stacked batteries.更多还原