Performance enhancement by introducing different chlorinated salts in the SnO2 electron transfer layer of perovskite solar cells

Singh, A and Nath, B and Panchal, A and Ramamurthy, PC (2022) Performance enhancement by introducing different chlorinated salts in the SnO2 electron transfer layer of perovskite solar cells. In: 2022 IEEE International Conference on Emerging Electronics, 11- 14 Dec 2022, Bangalore.

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Abstract

Tin oxide (SnO2) is one of the important and commonly used electron transfer layers (ETLs) in the planar structure of perovskite solar cells (PSCs). Doping the SnO2 layer with chlorinated salts such as potassium chloride (KCl) has been reported to improve the power conversion efficiency (PCE), intriguing further exploration of other chlorinated salts. Herein, the results from various chlorinated salts in addition to KCl are evaluated. It was observed, that though the PSCs with KCl doped SnO2 layer yield the best PCE (17%), the ETL layer doped with other chlorinated salts such as sodium chloride (NaCl) and Iron chloride (FeCl3) also showed improvement in performance from the pristine SnO2 (15 %). Moreover, the results from the SnO2-NaCl-based devices are found to be comparable to the SnO2-KCl. Performance enhancement is attributed to the passivation of defects in the interface and reduction in the non-radiative recombination losses. The established trend is supported by the current-voltage (J-V) and photoluminescence (PL) studies.

Item Type:	Conference Paper
Publication:	2022 IEEE International Conference on Emerging Electronics, ICEE 2022
Publisher:	Institute of Electrical and Electronics Engineers Inc.
Additional Information:	The copyright for this article belongs to Institute of Electrical and Electronics Engineers Inc.
Department/Centre:	Division of Interdisciplinary Sciences > Interdisciplinary Centre for Energy Research Division of Mechanical Sciences > Materials Engineering (formerly Metallurgy)
Date Deposited:	28 Jun 2023 06:06
Last Modified:	28 Jun 2023 06:06
URI:	https://eprints.iisc.ac.in/id/eprint/82195

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