Covalent bonding strategy to enable non-volatile organic cation perovskite for highly stable and efficient solar cells

Autor(en)

Kai Liu, Saqib Rafique, Stefania F. Musolino, Zenghua Cai, Fengcai Liu, Xiaoguo Li, Yongbo Yuan, Qinye Bao, Yingguo Yang, Jiao Chu, Xinxin Peng, Cengao Nie, Wei Yuan, Sidi Zhang, Jiao Wang, Yiyi Pan, Haijuan Zhang, Xia Cai, Zejiao Shi, Chongyuan Li, Haoliang Wang, Liangliang Deng, Tianxiang Hu, Yaxin Wang, Yanyan Wang, Shiyou Chen, Lei Shi, Paola Ayala, Jeremy E. Wulff, Anran Yu, Yiqiang Zhan

Abstrakt

The loss of organic components from perovskites has inevitably triggered a series of undesirable results, including ion migration, increased defects, and organic vapors, which severely limit the performance of perovskite solar cells (PSCs) and impede their progress toward commercial applications. To circumvent this issue, we report a novel covalent bonding strategy by employing bis-diazirine (BD) molecules to covalently bond organic cations of perovskites. Experimental and ab initio simulation results confirmed the efficacy of BD molecules to strongly immobilize the organic cations and eventually enhance the thermal, illumination, and electrical bias resistance properties of perovskites. Consequently, highly efficient (24.36% efficiency, certified 24.02%) and ultra-stable PSCs were realized, which retained 98.6% of their initial efficiency even after 1,000 h of operational tests.

Organisation(en)

Elektronische Materialeigenschaften

Externe Organisation(en)

Fudan University, University of Victoria, Suzhou University of Science and Technology, Central South University (CSU), East China Normal University, Chinese Academy of Sciences (CAS)

Journal

Joule

Band

7

Seiten

1033-1050

Anzahl der Seiten

18

DOI

https://doi.org/10.1016/j.joule.2023.03.019

Publikationsdatum

05-2023

Peer-reviewed

Ja

ÖFOS 2012

103018 Materialphysik

Schlagwörter

ASJC Scopus Sachgebiete

Allgemeine Energie

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/c2c3fbc7-03d5-4a81-a53e-4ca9ef73d042