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Dopant-free novel hole-transporting materials based on quinacridone dye for high-performance and humidity-stable mesoporous perovskite solar cells

Hong Duc Pham, Sagar Jain, Meng Li, Sergei Manzhos, Krishna Feron, Sudhagar Pitchaimuthu Orcid Logo, Zhiyong Liu, Nunzio Motta, Hongxia Wang, James Durrant Orcid Logo, Prashant Sonar

Journal of Materials Chemistry A, Volume: 7, Issue: 10, Pages: 5315 - 5323

Swansea University Authors: Sagar Jain, Sudhagar Pitchaimuthu Orcid Logo, James Durrant Orcid Logo

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DOI (Published version): 10.1039/C8TA11361K

Abstract

This work reports three newly developed dopant free hole transporting materials (HTMs) for perovskite solar cells. The design was based on quinacridone (QA) dye analogues with three different extending moieties, including acenaphthylene (ACE), triphenylamine (TPA) and diphenylamine (DPA). They were...

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Published in: Journal of Materials Chemistry A
ISSN: 2050-7488 2050-7496
Published: 2019
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URI: https://cronfa.swan.ac.uk/Record/cronfa48776
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Abstract: This work reports three newly developed dopant free hole transporting materials (HTMs) for perovskite solar cells. The design was based on quinacridone (QA) dye analogues with three different extending moieties, including acenaphthylene (ACE), triphenylamine (TPA) and diphenylamine (DPA). They were synthesized and fabricated successfully in mesoscopic TiO2/CH3NH3PbI3/HTM perovskite devices. Under 100 mW cm-2 AM 1.5G, the devices achieved a maximum efficiency of 18.2% for ACE-QA-ACE, 16.6% for TPA-QA-TPA and 15.5% for DPA-QA-DPA without any additives, while the reference devices with doped Spiro-OMeTAD as HTM showed a PCE of 15.2%. Notably, the unencapsulated devices based on these novel dopant-free HTMs show impressive stability in comparison with the doped Spiro-OMeTAD devices under 75% relative humidity for 30 days. These linear symmetrical HTMs pave the way to a new class of organic hole transporting materials for cost-efficient and large area applications of printed perovskite solar cells.
Keywords: quinacridone, acenaphthylene, triphenylamine, dopant-free, perovskite solar cells 
College: College of Engineering
Issue: 10
Start Page: 5315
End Page: 5323