RT Journal Article
T1 Heteroatom Effect on Star-Shaped Hole-Transporting Materials for Perovskite Solar Cells
A1 García Benito, Inés
A1 Zimmermann, Iwan
A1 Urieta Mora, Javier
A1 Aragó, Juan
A1 Calbo, Joaquín
A1 Perles Hernáez, Josefina
A1 Sebastián Serrano, Álvaro
A1 Serrano, Alvaro
A1 Molina Ontoria, Agustín
A1 Ortí, Enrique
A1 Martín León, Nazario
A1 Nazeeruddin, Mohammad Khaja
AB Three new star-shaped hole-transporting materials (HTMs) incorporatingbenzotripyrrole, benzotrifuran, and benzotriselenophene central cores endowedwith three-armed triphenylamine moieties (BTP-1, BTF-1, and BTSe-1, respec-tively) are designed, synthesized, and implemented in perovskite solar cells(PSCs). The impact that the heteroatom-containing central scaffold has on theelectrochemical and photophysical properties, as well as on the photovoltaicperformance, is systematically investigated and compared with their sulfur-richanalogue (BTT-3). The new HTMs exhibit suitable highest-occupied molecularorbitals (HOMO) levels regarding the valence band of the perovskite, whichensure efficient hole extraction at the perovskite/HTM interface. The molecularstructures of BTF-1, BTT-3, and BTSe-1 are fully elucidated by single-crystal X-raycrystallography as toluene solvates. The optimized (FAPbI3)0.85(MAPbBr3)0.15-based perovskite solar cells employing the tailor-made, chalcogenide-basedHTMs exhibit remarkable power conversion efficiencies up to 18.5%, which arecomparable to the devices based on the benchmark spiro-OMeTAD. PSCs withBTP-1 exhibit a more limited power conversion efficiency of 15.5%, with notice-able hysteresis. This systematic study indicates that chalcogenide-based deriva-tives are promising HTM candidates to compete efficiently with spiro-OMeTAD.
PB Wiley-VCH Verlag
YR 2018
FD 2018-06-05
LK https://hdl.handle.net/20.500.14352/108439
UL https://hdl.handle.net/20.500.14352/108439
LA eng
NO I. García-Benito, I. Zimmermann, J. Urieta-Mora, J. Aragó, J. Calbo, J. Perles, A. Serrano, A. Molina-Ontoria, E. Ortí, N. Martín, M. K. Nazeeruddin, Adv. Funct. Mater. 2018, 28, 1801734.
NO European Commission
NO Ministerio de Economía, Comercio y Empresa
NO Comunidad de Madrid
NO Generalitat Valenciana
NO European Research Council
DS Docta Complutense
RD 6 abr 2025