Slow Spontaneous Efficiency Enhancement of Single-Crystal Perovskite Solar Cells Due to Trapped Solvent

Vishal Yeddu; Parinaz Moazzezi; Bekir Turedi; Muhammad Naufal Lintangpradipto; Dongyang Zhang; Soumya Kundu; Deepak Thrithamarassery Gangadharan; Reuven Gordon; Osman M. Bakr; Makhsud I. Saidaminov

doi:10.1021/acsaem.2c03416

Slow Spontaneous Efficiency Enhancement of Single-Crystal Perovskite Solar Cells Due to Trapped Solvent

Vishal Yeddu, Parinaz Moazzezi, Bekir Turedi, Muhammad Naufal Lintangpradipto, Dongyang Zhang, Soumya Kundu, Deepak Thrithamarassery Gangadharan, Reuven Gordon, Osman M. Bakr, Makhsud I. Saidaminov^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

5 Scopus citations

Abstract

Perovskite solar cells show spontaneous efficiency enhancement (SEE), i.e., their efficiency improves with time over a few days. Many mechanisms have been proposed for explaining such behavior in polycrystalline perovskite solar cells. However, such studies have not been performed on single-crystal perovskite solar cells. Here, we report our observation of slow (∼20 days) SEE in methylammonium lead iodide single-crystal perovskite solar cells. We found that the SEE is due to the slow escape of solvent trapped by the perovskite single-crystal thin films. We show that this process can be substantially accelerated by heat treatment of cells at 40 °C. This work provides a ground for fast-tracking the progress of single-crystal perovskite solar cells.

Original language	English (US)
Pages (from-to)	2257-2264
Number of pages	8
Journal	ACS Applied Energy Materials
Volume	6
Issue number	4
DOIs	https://doi.org/10.1021/acsaem.2c03416
State	Published - Feb 27 2023

Keywords

aging
enhancement
perovskite
single crystals
solar cells

ASJC Scopus subject areas

Chemical Engineering (miscellaneous)
Energy Engineering and Power Technology
Electrochemistry
Materials Chemistry
Electrical and Electronic Engineering

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10.1021/acsaem.2c03416

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title = "Slow Spontaneous Efficiency Enhancement of Single-Crystal Perovskite Solar Cells Due to Trapped Solvent",

abstract = "Perovskite solar cells show spontaneous efficiency enhancement (SEE), i.e., their efficiency improves with time over a few days. Many mechanisms have been proposed for explaining such behavior in polycrystalline perovskite solar cells. However, such studies have not been performed on single-crystal perovskite solar cells. Here, we report our observation of slow (∼20 days) SEE in methylammonium lead iodide single-crystal perovskite solar cells. We found that the SEE is due to the slow escape of solvent trapped by the perovskite single-crystal thin films. We show that this process can be substantially accelerated by heat treatment of cells at 40 °C. This work provides a ground for fast-tracking the progress of single-crystal perovskite solar cells.",

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author = "Vishal Yeddu and Parinaz Moazzezi and Bekir Turedi and Lintangpradipto, {Muhammad Naufal} and Dongyang Zhang and Soumya Kundu and {Thrithamarassery Gangadharan}, Deepak and Reuven Gordon and Bakr, {Osman M.} and Saidaminov, {Makhsud I.}",

note = "Funding Information: The authors thank Solaires Entreprises Inc. and the Canadian Natural Sciences and Engineering Research Council (NSERC) (ALLRP 566552–21). M.I.S. is thankful to the NSERC (RGPIN-2020-04239), the Canadian Foundation for Innovation (40326), B.C. Knowledge Development fund, and the Canada Research Chairs Program (CRC-2019-00297) for financial support. B.T., M.N.L, and O.M.B are thankful to KAUST for financial support. The authors would like to thank Dr. Tyler Trefz for helping with GC-MS measurements. Publisher Copyright: {\textcopyright} 2023 American Chemical Society.",

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doi = "10.1021/acsaem.2c03416",

language = "English (US)",

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T1 - Slow Spontaneous Efficiency Enhancement of Single-Crystal Perovskite Solar Cells Due to Trapped Solvent

AU - Yeddu, Vishal

AU - Moazzezi, Parinaz

AU - Turedi, Bekir

AU - Lintangpradipto, Muhammad Naufal

AU - Zhang, Dongyang

AU - Kundu, Soumya

AU - Thrithamarassery Gangadharan, Deepak

AU - Gordon, Reuven

AU - Bakr, Osman M.

AU - Saidaminov, Makhsud I.

N1 - Funding Information: The authors thank Solaires Entreprises Inc. and the Canadian Natural Sciences and Engineering Research Council (NSERC) (ALLRP 566552–21). M.I.S. is thankful to the NSERC (RGPIN-2020-04239), the Canadian Foundation for Innovation (40326), B.C. Knowledge Development fund, and the Canada Research Chairs Program (CRC-2019-00297) for financial support. B.T., M.N.L, and O.M.B are thankful to KAUST for financial support. The authors would like to thank Dr. Tyler Trefz for helping with GC-MS measurements. Publisher Copyright: © 2023 American Chemical Society.

PY - 2023/2/27

Y1 - 2023/2/27

N2 - Perovskite solar cells show spontaneous efficiency enhancement (SEE), i.e., their efficiency improves with time over a few days. Many mechanisms have been proposed for explaining such behavior in polycrystalline perovskite solar cells. However, such studies have not been performed on single-crystal perovskite solar cells. Here, we report our observation of slow (∼20 days) SEE in methylammonium lead iodide single-crystal perovskite solar cells. We found that the SEE is due to the slow escape of solvent trapped by the perovskite single-crystal thin films. We show that this process can be substantially accelerated by heat treatment of cells at 40 °C. This work provides a ground for fast-tracking the progress of single-crystal perovskite solar cells.

AB - Perovskite solar cells show spontaneous efficiency enhancement (SEE), i.e., their efficiency improves with time over a few days. Many mechanisms have been proposed for explaining such behavior in polycrystalline perovskite solar cells. However, such studies have not been performed on single-crystal perovskite solar cells. Here, we report our observation of slow (∼20 days) SEE in methylammonium lead iodide single-crystal perovskite solar cells. We found that the SEE is due to the slow escape of solvent trapped by the perovskite single-crystal thin films. We show that this process can be substantially accelerated by heat treatment of cells at 40 °C. This work provides a ground for fast-tracking the progress of single-crystal perovskite solar cells.

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Slow Spontaneous Efficiency Enhancement of Single-Crystal Perovskite Solar Cells Due to Trapped Solvent

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