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Amorphous Hole‐Transporting Material based on 2,2′‐Bis‐substituted 1,1′‐Biphenyl Scaffold for Application in Perovskite Solar Cells
Author(s) -
Magomedov Artiom,
Sakai Nobuya,
Kamarauskas Egidijus,
Jokubauskaitė Gabrielė,
Franckevičius Marius,
Jankauskas Vygintas,
Snaith Henry J.,
Getautis Vytautas
Publication year - 2017
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201700173
Subject(s) - energy conversion efficiency , perovskite (structure) , materials science , amorphous solid , biphenyl , carbazole , thermal stability , solubility , perovskite solar cell , energy transformation , photovoltaic system , chemical engineering , optoelectronics , organic chemistry , chemistry , physics , engineering , thermodynamics , ecology , biology
Perovskite solar cells are considered a promising technology for solar‐energy conversion, with power conversion efficiencies currently exceeding 20 %. In most of the reported devices, Spiro‐OMeTAD is used for positive‐charge extraction and transport layer. Although a number of alternative hole‐transporting materials with different aromatic or heteroaromatic fragments have already been synthesized, a cheap and well‐performing hole‐transporting material is still in high demand. In this work, a two‐step synthesis of a carbazole‐based hole‐transporting material is presented. Synthesized compounds exhibited amorphous nature, good solubility and thermal stability. The perovskite solar cells employing the newly synthesized material generated a power conversion efficiency of 16.5 % which is slightly lower than that obtained with Spiro‐OMeTAD (17.5 %). The low‐cost synthesis and high performance makes our hole‐transport material promising for applications in perovskite‐based optoelectronic devices.