Issue 16, 2020

Synthesis of a side-chain hole transporting polymer through Mitsunobu post-functionalization for efficient inverted perovskite solar cells

Abstract

An efficient post-functionalization protocol of the Mitsunobu reaction between a commercial reactive polymer of poly(4-vinylphenol) (PVP) and 9-(2-hydroxylethyl)-N,N,N,N-tetrakis(4-methoxyphenyl)-9H-carbazole-2,7-diamine is reported to synthesize a novel side-chain polymer (PVP-CZ) with a high density of hole transporting moieties. The polymer PVP-CZ exhibits adequate solvent resistance and excellent film forming ability for the fabrication of inverted perovskite solar cells (PVSCs). The thermal, optical and electrochemical properties of PVP-CZ were investigated in detail. The steady-state photoluminescence (PL) and time resolved photoluminescence (TRPL) decay showed the excellent hole-extracting ability of dopant-free PVP-CZ from the perovskite layer. As a result, the inverted PVSCs delivered a respectable power conversion efficiency of 17.75% with a high fill factor of 81.07%. These results indicate that the synthetic strategy using the post-functionalization of the Mitsunobu reaction is a promising protocol to develop novel side-chain hole transporting polymers for highly efficient PVSCs.

Graphical abstract: Synthesis of a side-chain hole transporting polymer through Mitsunobu post-functionalization for efficient inverted perovskite solar cells

Supplementary files

Article information

Article type
Paper
Submitted
26 Jan 2020
Accepted
22 Mar 2020
First published
23 Mar 2020

Polym. Chem., 2020,11, 2883-2888

Synthesis of a side-chain hole transporting polymer through Mitsunobu post-functionalization for efficient inverted perovskite solar cells

L. Lan, X. Deng, J. Zhang, J. Luo and A. K.-Y. Jen, Polym. Chem., 2020, 11, 2883 DOI: 10.1039/D0PY00134A

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