jo9b02769_si_001.pdf (4.38 MB)
Tetrasubstituted Thieno[3,2‑b]thiophenes as Hole-Transporting Materials for Perovskite Solar Cells
journal contribution
posted on 2019-12-13, 19:19 authored by Javier Urieta-Mora, Inés García-Benito, Iwan Zimmermann, Juan Aragó, Agustín Molina-Ontoria, Enrique Ortí, Nazario Martín, Mohammad Khaja NazeeruddinThree hole-transporting materials (HTMs) were prepared
following
a straightforward synthetic route by cross-linking arylamine-based
ligands with a simple thieno[3,2-b]thiophene (TbT)
core. The novel HTMs were fully characterized with standard techniques
to gain insight into their optical and electrochemical properties
and were incorporated in solution-processed mesoporous (FAPbI3)0.85(MAPbBr3)0.15 perovskite-based
solar cells. The similar molecular structure of the synthesized HTMs
was leveraged to investigate the role that the bridging units between
the conjugated TbT core and the peripheral arylamine units plays on
their properties and thereby on the photovoltaic response. A remarkable
power conversion efficiency exceeding 18% was achieved for one of
the TbT derivatives, which was slightly higher than the value measured
for the benchmark spiro-OMeTAD.
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solution-processed mesoporouspower conversion efficiencyTbT derivativesbenchmark spiro-OMeTADcross-linking arylamine-based ligandsthiophenegain insight0.15 perovskite-basedPerovskite Solar Cellsphotovoltaic responseTbT corearylamine unitsFAPbI 3electrochemical propertieshole-transporting materialsMAPbBr 3Hole-Transporting Materialsnovel HTMs
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