Perovskite Solar Cells Employing Copper Phthalocyanine Hole-Transport Material with an Efficiency over 20% and Excellent Thermal Stability

Duong, T; Peng, J; Walter, D; Xiang, J; Shen, H; Chugh, D; Lockrey, M; Zhong, D; Li, J; Weber, K; White, TP; Catchpole, KR

Perovskite Solar Cells Employing Copper Phthalocyanine Hole-Transport Material with an Efficiency over 20% and Excellent Thermal Stability

Duong, T Peng, J Walter, D Xiang, J Shen, H Chugh, D Lockrey, M

Zhong, D Li, J Weber, K White, TP Catchpole, KR

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Publication Type:: Journal Article
Citation:: ACS Energy Letters, 2018, 3 (10), pp. 2441 - 2448
Issue Date:: 2018-10-12

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Field	Value	Language
dc.contributor.author	Duong, T	en_US
dc.contributor.author	Peng, J	en_US
dc.contributor.author	Walter, D	en_US
dc.contributor.author	Xiang, J	en_US
dc.contributor.author	Shen, H	en_US
dc.contributor.author	Chugh, D	en_US
dc.contributor.author	Lockrey, M https://orcid.org/0000-0002-0050-2858	en_US
dc.contributor.author	Zhong, D	en_US
dc.contributor.author	Li, J	en_US
dc.contributor.author	Weber, K	en_US
dc.contributor.author	White, TP	en_US
dc.contributor.author	Catchpole, KR	en_US
dc.date.issued	2018-10-12	en_US
dc.identifier.citation	ACS Energy Letters, 2018, 3 (10), pp. 2441 - 2448	en_US
dc.identifier.uri	http://hdl.handle.net/10453/130852
dc.description.abstract	© Copyright 2018 American Chemical Society. We investigate the properties of an inexpensive hole-transporting material (HTM), copper phthalocyanine (CuPc), deposited by a solution-processing method in perovskite solar cells (PSCs). Cracks are found to be abundant on the as-deposited CuPc films, which lead to serious shunts and interface recombination. Surprisingly, shunts and interface recombination are significantly reduced and cell performance is greatly improved after heat treatment at 85 °C. We find that the enhancement is due to heat-induced migration of Au particles away from the cracks. Furthermore, Au is found to dope the CuPc film, and the doping effect is greatly enhanced by the heat treatment. Using CuPc and quadruple-cation perovskite, an efficiency of over 20% and negligible hysteresis is achieved after the heat treatment, which is the highest value reported for this structure. Additionally, PSCs employing CuPc and dual-cation perovskite show excellent thermal stability after >2000 h at 85 °C and good light stability at 25 °C.	en_US
dc.relation.ispartof	ACS Energy Letters	en_US
dc.relation.isbasedon	10.1021/acsenergylett.8b01483	en_US
dc.title	Perovskite Solar Cells Employing Copper Phthalocyanine Hole-Transport Material with an Efficiency over 20% and Excellent Thermal Stability	en_US
dc.type	Journal Article
utslib.citation.volume	10	en_US
utslib.citation.volume	3	en_US
utslib.for	0303 Macromolecular and Materials Chemistry	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Science
utslib.copyright.status	closed_access
pubs.issue	10	en_US
pubs.publication-status	Published	en_US
pubs.volume	3	en_US

Abstract:

© Copyright 2018 American Chemical Society. We investigate the properties of an inexpensive hole-transporting material (HTM), copper phthalocyanine (CuPc), deposited by a solution-processing method in perovskite solar cells (PSCs). Cracks are found to be abundant on the as-deposited CuPc films, which lead to serious shunts and interface recombination. Surprisingly, shunts and interface recombination are significantly reduced and cell performance is greatly improved after heat treatment at 85 °C. We find that the enhancement is due to heat-induced migration of Au particles away from the cracks. Furthermore, Au is found to dope the CuPc film, and the doping effect is greatly enhanced by the heat treatment. Using CuPc and quadruple-cation perovskite, an efficiency of over 20% and negligible hysteresis is achieved after the heat treatment, which is the highest value reported for this structure. Additionally, PSCs employing CuPc and dual-cation perovskite show excellent thermal stability after >2000 h at 85 °C and good light stability at 25 °C.

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http://hdl.handle.net/10453/130852