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Low temperature processed fused-ring electron transport material for efficient planar perovskite solar cells

Abstract

A fused-ring electron acceptor based on indacenodithiophene (IDIC) was used to replace TiO2 and work as an electron transport layer in the planar n-i-p perovskite solar cells. IDIC improves perovskite crystallinity and film quality due to its hydrophobicity and incompatible wetting surface. IDIC facilitates electron extraction and transport due to its high mobility and suitable energy levels matched with perovskite. IDIC reduces charge recombination in the devices due to trap passivation at perovskite surface. The IDIC-based devices exhibit a champion power conversion efficiency of 19.1%, which is higher than that of the TiO2-based devices (17.4%). Moreover, the device stability is significantly improved by IDIC.

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Publication details

The article was received on 30 Oct 2017, accepted on 09 Nov 2017 and first published on 09 Nov 2017


Article type: Paper
DOI: 10.1039/C7TA09543K
Citation: J. Mater. Chem. A, 2017, Accepted Manuscript
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    Low temperature processed fused-ring electron transport material for efficient planar perovskite solar cells

    M. Zhang, J. Zhu, K. Liu, G. Zheng, G. Zhao, L. Li, Y. Meng, T. Guo, H. Zhou and X. Zhan, J. Mater. Chem. A, 2017, Accepted Manuscript , DOI: 10.1039/C7TA09543K

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