抗氧化小分子体掺杂对锡铅钙钛矿太阳电池性能的影响
EFFECT OF ANTIOXIDANT SMALL MOLECULE DOPING ON PERFORMANCE OF TIN-LEAD PEROVSKITE SOLAR CELLS
董婧 1刘辉 1王三龙 1王鹏阳 1赵颖 1张晓丹1
作者信息
- 1. 南开大学光电子薄膜器件与技术研究所,可再生能源转换与存储中心,天津 300350;天津市光电薄膜器件与技术重点实验室,天津 300350;物质绿色创造和制造海河实验室,天津 300192;教育部薄膜光电技术工程研究中心,天津 300350
- 折叠
摘要
锡铅钙钛矿中存在各种缺陷,且Sn2+容易被氧化成Sn4+,从而导致太阳电池的转换效率和稳定性较差.研究发现4-香豆酸(p-C)的引入可显著改变薄膜的表面形貌、有效提高结晶性,且抑制Sn2+的氧化,有利于提高钙钛矿层与传输层之间的能级匹配度.通过对钙钛矿光吸收层的缺陷进行钝化,可显著提升太阳电池的光电特性.最终,锡铅钙钛矿太阳电池的开路电压提升65 mV,光电转换效率由18.14%提升至20.37%,并且电池稳定性得到显著提升.
Abstract
Various defects exist in tin-lead alloyed perovskites,and Sn2+ is easily oxidized to Sn4+,which lead to poor power conversion efficiency(PCE)and stability of solar cells.It is found that the introduction of p-Coumaric acid modifies the surface morphology of the film,effectively improves the crystallinity,and inhibits the oxidation of Sn2+,which is conducive to the matching degree of energy levels between the perovskite layer and the transport layer.The photovoltaic characteristics of the device are significantly enhanced through passivating the defects in the perovskite layer.Ultimately,the open-circuit voltage of the tin-lead perovskite solar cell is enhanced by 65 mV.The PCE is increased from 18.14%to 20.37%,and the stability of the device is effectively improved.
关键词
钙钛矿太阳电池/抗氧化剂/开路电压/添加剂Key words
perovskite solar cells/antioxidants/open-circuit voltage/additives引用本文复制引用
基金项目
国家自然科学基金(62274099)
高等教育学科创新海外人才引进项目(B16027)
中央高校基本科研业务费专项南开大学项目()
出版年
2024
NETL
NSTL
万方数据