Insights into optoelectronic properties of anti-solvent treated perovskite films
Insights into optoelectronic properties of anti-solvent treated perovskite films
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Date
2017
Authors
Nawaz, Asmat
Erdinc, Ali Koray
Gultekin, Burak
Tayyib, Muhammad
Zafer, Ceylan
Wang, Kaiying
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Journal article
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Journal of Materials Science : Materials in Electronics ; 28 (2017), 20. - pp. 15630-15636. - ISSN 0957-4522. - eISSN 1573-482X
Abstract
The remarkable performance in perovskite solar cells over the past few years primarily stemmed from an improvement in perovskite film composition and morphology. Antisolvent treatment of perovskite films is one such widely adopted method where a solvent other than that used for precursor solution is introduced to facilitate rapid crystallization of perovskite crystals and to obtain a homogeneous pin-hole free film. Various reports are published recently to understand solvent extraction mechanism, electrical properties and the effect of antisolvent treatment of perovskite film on device performance and stability. Herein, we report some more insights on the charge carrier dynamics, crystallinity and more importantly, the change in energy levels of antisolvent treated perovskite films. The UV–vis absorption, photoluminescence, and photoelectron spectroscopy measurements revealed a downward shift in energy levels of MAPbI3 perovskite when treated with an antisolvent. The energy level shift favoured interfacial charge transfer and resulted in remarkable open-circuit voltage ~1.08 V and photoconversion efficiency 8.21% up from 0.61 V and 1.3% for a non-treated film, respectively for devices prepared at ambient conditions.
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530 Physics
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optoelectronic properties, anti-solvent treated perovskite films
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NAWAZ, Asmat, Ali Koray ERDINC, Burak GULTEKIN, Muhammad TAYYIB, Ceylan ZAFER, Kaiying WANG, Ka Kan WONG, Sajad HUSSAIN, Lukas SCHMIDT-MENDE, Azhar FAKHARUDDIN, 2017. Insights into optoelectronic properties of anti-solvent treated perovskite films. In: Journal of Materials Science : Materials in Electronics. 28(20), pp. 15630-15636. ISSN 0957-4522. eISSN 1573-482X. Available under: doi: 10.1007/s10854-017-7451-zBibTex
@article{Nawaz2017-10Insig-40195, year={2017}, doi={10.1007/s10854-017-7451-z}, title={Insights into optoelectronic properties of anti-solvent treated perovskite films}, number={20}, volume={28}, issn={0957-4522}, journal={Journal of Materials Science : Materials in Electronics}, pages={15630--15636}, author={Nawaz, Asmat and Erdinc, Ali Koray and Gultekin, Burak and Tayyib, Muhammad and Zafer, Ceylan and Wang, Kaiying and Wong, Ka Kan and Hussain, Sajad and Schmidt-Mende, Lukas and Fakharuddin, Azhar} }
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