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Issue 48, 2017
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A simple and dopant-free hole-transporting material based on (2-ethylhexyl)-9H-carbazole for efficient planar perovskite solar cells

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Abstract

A hole-transporting material (HTM) based on (2-ethylhexyl)-9H-carbazole as the core and N,N-di-p-methoxyphenylamine as the end group (CMO) has been designed. CMO with a simple structure can be synthesized by a one-step process in a high yield and it shows good solubility in solvents. Steady-state and time-resolved photoluminescence measurements show that CMO has significant charge extraction ability. Planar perovskite solar cells (pero-SCs) based on CMO as the HTM showed a high power conversion efficiency of 15.92%. For reference purposes, pero-SCs based on 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylamine)-9-9′-spirobifluorene (Spiro-OMeTAD) were fabricated and a PCE of 16.70% was reached. CMO is one of the simplest HTM materials reported, which shows a PCE comparable to that of Spiro-OMeTAD at the same time.

Graphical abstract: A simple and dopant-free hole-transporting material based on (2-ethylhexyl)-9H-carbazole for efficient planar perovskite solar cells

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Publication details

The article was received on 14 Aug 2017, accepted on 26 Oct 2017 and first published on 27 Oct 2017


Article type: Paper
DOI: 10.1039/C7TC03683C
Citation: J. Mater. Chem. C, 2017,5, 12752-12757
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    A simple and dopant-free hole-transporting material based on (2-ethylhexyl)-9H-carbazole for efficient planar perovskite solar cells

    J. Zhang, L. J. Xu, P. Huang, Y. Zhou, Y. Y. Zhu, N. Y. Yuan, J. N. Ding, Z. G. Zhang and Y. F. Li, J. Mater. Chem. C, 2017, 5, 12752
    DOI: 10.1039/C7TC03683C

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