Spiro-Phenylpyrazole/Fluorene as Hole-Transporting Material for Perovskite Solar Cells

Spiro-OMeTAD with symmetric spiro-bifluorene unit has dominated the investigation of hole-transporting material (HTM) for efficient perovskite solar cells (PSCs) despite of its low intrinsic hole conductivity and instability. In this study, we designed and synthesized three asymmetric spiro-phenylpy...

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Published in:Scientific reports 2017-08, Vol.7 (1), p.7859-9, Article 7859
Main Authors: Wang, Yang, Su, Tzu-Sen, Tsai, Han-Yan, Wei, Tzu-Chien, Chi, Yun
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639/301/299/946
639/4077/909/4101/4096/946
639/638/161/891
Fluorene
Humanities and Social Sciences
multidisciplinary
Phenylpyrazole
Photovoltaic cells
Science
Science (multidisciplinary)
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description Spiro-OMeTAD with symmetric spiro-bifluorene unit has dominated the investigation of hole-transporting material (HTM) for efficient perovskite solar cells (PSCs) despite of its low intrinsic hole conductivity and instability. In this study, we designed and synthesized three asymmetric spiro-phenylpyrazole/fluorene base HTMs, namely: WY-1, WY-2 and WY-3. They exhibit excellent electrochemical properties and hole conductivities. Moreover, the PSC based on WY-1 exhibits the highest power conversion efficiency (PCE) of 14.2%, which is comparable to the control device employing spiro-OMeTAD as HTM (14.8%). These results pave the way to further optimization of both molecular design and device performance of the spiro-based HTMs.
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subjects 639/301/299/946
639/4077/909/4101/4096/946
639/638/161/891
Fluorene
Humanities and Social Sciences
multidisciplinary
Phenylpyrazole
Photovoltaic cells
Science
Science (multidisciplinary)
title Spiro-Phenylpyrazole/Fluorene as Hole-Transporting Material for Perovskite Solar Cells
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