Towards Extending Solar Cell Lifetimes: Addition of a Fluorous Cation to Triple Cation-Based Perovskite Films

Organohalide perovskites have emerged as highly promising replacements for thin-film solar cells. However, their poor stability under ambient conditions remains problematic, hindering commercial exploitation. The addition of a fluorous-functionalized imidazolium cation during the preparation of a highly stable cesium-based mixed perovskite material Cs-0.05(MA(0.15)FA(0.85))(0.95)Pb(I0.85Br0.15)(3) (MA= methylammonium; FA= formamidinium) has been shown to influence its stability. The resulting materials, which vary according to the amount of the fluorous-functionalized imidazolium cation present during fabrication, display a prolonged tolerance to atmospheric humidity (> 100 days) along with power conversion efficiencies exceeding 16%. This work provides a general route that can be implemented in a variety of perovskites and highlights a promising way to increase perovskite solar cell stability.


Published in:
Chemsuschem, 10, 19, 3846-3853
Presented at:
Symposium on Halide Perovskites for Optoelectronics Applications as part of the International Conference on Materials for Advanced Technologies (ICMAT), Singapore, SINGAPORE, 2017
Year:
2017
Publisher:
Weinheim, Wiley-V C H Verlag Gmbh
ISSN:
1864-5631
Keywords:
Laboratories:




 Record created 2017-11-08, last modified 2018-12-21


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