添加剂提高宽带隙钙钛矿太阳电池的性能
ADDITIVE IMPROVES PERFORMANCE OF WIDE BANDGAP PEROVSKITE SOLAR CELLS
李卓芯 1冯旭铮 1陈香港 1刘雪朋 1戴松元 1蔡墨朗1
作者信息
- 1. 华北电力大学新能源学院,北京 102206
- 折叠
摘要
该文研究聚对苯乙烯磺酸钠(PSS)对宽带隙钙钛矿薄膜及电池的影响.研究发现PSS添加剂可改善宽带隙钙钛矿薄膜的形貌,提升结晶度并减少缺陷态密度,这有利于抑制混合卤素宽带隙钙钛矿薄膜的相分离问题.J-V测试结果表明钝化后的宽带隙钙钛矿太阳电池性能得到明显提升.在掺有PSS的宽带隙钙钛矿太阳电池中,开路电压最高可达1.23 V,效率最高可达20.54%,并且相分离被抑制后的封装钙钛矿太阳电池稳定性显著改善,在一个太阳连续光照500 h后,电池效率仍可保持在初始效率的81.9%(氮气环境,温度40℃).
Abstract
The effects of polysodium p-styrene sulfonate(PSS)on wide-bandgap perovskite films and devices are studied in this paper.The research of this paper shows that use of a polypodium PSS passivator can effectively improve the morphology,increase the crystallinity,and reduce the defect density of perovskite films,which are beneficial to inhibit the phase segregation of mixed-halide wide-bandgap perovskite films.Finally,the J-V test results show that the performance of the optimized wide-bandgap perovskite solar cell is significantly improved.In the wide bandgap perovskite solar cell with PSS,the open circuit voltage is up to 1.23 V,and the efficiency is up to 20.54%.Moreover,the stability of the encapsulated device is significantly improved after phase segregation being inhibited,and the efficiency remains 81.9%of the initial efficiency under continuous illumination for 500 h(N2 environment,40℃).
关键词
钙钛矿太阳电池/宽带隙/结晶度/缺陷钝化/相分离/性能Key words
perovskite solar cells/wide-band gap/crystallinity/defect passivation/phase segregation/performance引用本文复制引用
基金项目
国家自然科学基金(52202169)
国家自然科学基金(22279033)
江苏省碳达峰碳中和科技创新专项(BE2022026)
出版年
2024
NETL
NSTL
万方数据