2026-06-29T02:39:14Zhttps://docta.ucm.es/rest/oai/request

oai:docta.ucm.es:20.500.14352/1158912025-01-24T01:13:26Zcom_20.500.14352_14col_20.500.14352_15

Isomerism effect on the photovoltaic properties of benzotrithiophene-based hole-transporting materials García Benito, Inés Zimmermann, Iwan Urieta Mora, Javier Aragó, Juan Molina Ontoria, Agustín Ortí, Enrique Martín León, Nazario Nazeeruddin, Mohammad Khaja Engineering of inorganic–organic lead halide perovskites for photovoltaic applications has experienced significant advances in recent years. However, the use of the relatively expensive spiro-OMeTAD as a hole-transporting material (HTM) poses a challenge due to dopant-induced degradation. Herein we introduce two new three-armed and four-armed HTMs (BTT-4 and BTT-5) based on isomeric forms of benzotrithiophene (BTT). The isomerism impact on the optical, electrochemical and photophysical properties and the photovoltaic performance is systematically investigated. Perovskite solar cells (PSCs) using BTT-4 and BTT-5 as HTMs show remarkable light-to-energy conversion efficiencies of 19.0% and 18.2%, respectively, under standard measurement conditions. These results validate the readily available BTT heteroaromatic structure as a valuable core for the design of highly efficient HTMs for the preparation of PSCs. 2025-01-23T14:42:59Z 2025-01-23T14:42:59Z 2017-03-07 journal article García-Benito, Inés, et al. «Isomerism Effect on the Photovoltaic Properties of Benzotrithiophene-Based Hole-Transporting Materials». Journal of Materials Chemistry A, vol. 5, n.o 18, 2017, pp. 8317-24. 2050-7488 2050-7496 10.1039/c7ta00997f https://hdl.handle.net/20.500.14352/115891 https://doi.org/10.1039/C7TA00997F https://pubs.rsc.org/en/content/articlelanding/2017/ta/c7ta00997f eng ERC-320441-Chirallcarbon CTQ2014- 52045-R CTQ2015-71154-P CTQ2015-71936-REDT MDM-2015-0538 FOTOCARBON project S2013/MIT-2841 PROMETEO/2016/135 http://creativecommons.org/licenses/by-nc-nd/4.0/ open access Attribution-NonCommercial-NoDerivatives 4.0 International ROYAL SOCIETY OF CHEMISTRY