Novel Carbazole-Based Hole-Transporting Materials with Star-Shaped Chemical Structures for Perovskite-Sensitized Solar Cells

ACS Applied Materials & Interfaces
Min Soo KangHwan Kyu Kim

Abstract

Novel carbazole-based hole-transporting materials (HTMs), including extended π-conjugated central core units such as 1,4-phenyl, 4,4'-biphenyl, or 1,3,5-trisphenylbenzene for promoting effective π-π stacking as well as the hexyloxy flexible group for enhancing solubility in organic solvent, have been synthesized as HTM of perovskite-sensitized solar cells. A HTM with 1,3,5-trisphenylbenzene core, coded as SGT-411, exhibited the highest charge conductivity caused by its intrinsic property to form crystallized structure. The perovskite-sensitized solar cells with SGT-411 exhibited the highest PCE of 13.00%, which is 94% of that of the device derived from spiro-OMeTAD (13.76%). Time-resolved photoluminescence spectra indicate that SGT-411 shows the shortest decay time constant, which is in agreement with the trends of conductivity data, indicating it having fastest charge regeneration. In this regard, a carbazole-based HTM with star-shaped chemical structure is considered to be a promising candidate HTM.

References

Mar 20, 2014·Chemphyschem : a European Journal of Chemical Physics and Physical Chemistry·F Javier RamosShahzada Ahmad
Oct 4, 2014·Chemical Communications : Chem Comm·Sang Do SungWan In Lee
Mar 13, 2015·ACS Applied Materials & Interfaces·Yingzhuang MaDechun Zou

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Citations

Apr 24, 2016·Chemistry : a European Journal·Aniket ChowdhuryPartha Sarathi Mukherjee
Oct 16, 2016·Angewandte Chemie·Laura CalióShahzada Ahmad
Sep 16, 2017·Materials·Paola VivoArri Priimagi
Jun 5, 2020·Chemical Society Reviews·Maria VasilopoulouMohammad Khaja Nazeeruddin
May 4, 2018·Advanced Science·Šarūnė Daškevičiū TėVytautas Getautis
Aug 9, 2019·Chemical Science·Kasparas RakstysMohammad Khaja Nazeeruddin
Apr 20, 2021·Chemistry : a European Journal·Ottavia BettucciJuan Luis Delgado
Jan 13, 2020·Chemical Science·Babak PashaeiFrancesco Bonaccorso
Mar 16, 2018·Accounts of Chemical Research·Cristina Rodríguez-SecoEmilio Palomares
Apr 4, 2020·ACS Applied Materials & Interfaces·Kasparas RakstysMohammad Khaja Nazeeruddin
Nov 9, 2018·ACS Applied Materials & Interfaces·Yeo-Sin LinShih-Sheng Sun

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