首页|A-site assisted perovskite crystallization via ion-exchange MOFs for high efficient and stable perovskite solar cells

A-site assisted perovskite crystallization via ion-exchange MOFs for high efficient and stable perovskite solar cells

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Here,a novel strategy is proposed targeting the volatility of A-site cations and the disordered arrange-ment of perovskite grains through employing Cs+contained metal-organic frameworks In-aip(Cs)obtained by ion-exchange and crystalline transform.Interatomic forces between Cs-O atoms split the pore channels of the pristine In-aip,endowing In-aip(Cs)with multidimensional charge transport chan-nels.In addition,the partially freed Cs+in the interlayer compensates for the vacancy of A-site cations during the perovskite preparation process.The In-aip(Cs)modified perovskite films have a flat morphol-ogy,large grains and excellent optoelectronic properties.Benefiting from the high-quality perovskite films and faster charge extraction,the In-aip(Cs)-modified PSCs achieved a champion PCE of 23.03％,superior to the In-aip-modified(22.29％)and control device(21.13％).More importantly,the unencapsu-lated PSCs modified with In-aip(Cs)exhibited outstanding humidity and thermal stability.Over a period of almost 1000 h,the unencapsulated In-aip(Cs)-modified device retained 85％of its initial PCE after stor-ing in a glove box at 85 ℃,and retained 87％of the primary PCE upon storage in ambient condition at 25 ℃ under a humidity of 40％.

Metal-organic frameworksPSCsStabilityDefect passivation

Xingrui Zhang、Jian Zhang、Wei Wang、Boyuan Hu、Yayu Dong、Debin Xia、Kaifeng Lin、Yulin Yang

展开 >

MIIT Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage,School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin 150001,Heilongjiang,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaChina Postdoctoral Science FoundationChina Postdoctoral Science FoundationPostdoctoral Foundation of Heilongjiang ProvinceNatural Science Foundation of Heilongjiang Youth Fund

22001050220720342020T1301472020M681084LBH-Z19059YQ2021B002

2024

10.1016/j.jechem.2024.02.015

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.93(6)
  • 51