2026-06-08T09:52:41Zhttps://docta.ucm.es/rest/oai/requestoai:docta.ucm.es:20.500.14352/176612023-08-25T12:18:29Zcom_20.500.14352_14col_20.500.14352_15
High-Efficiency Perovskite Solar Cells using Molecularly-Engineered, Thiophene-Rich,Hole-Transporting Materials: Influence of Alkyl Chain Length on Power Conversion Efficiency
Zimmermann, Iwan
Urieta Mora, Javier
Gratia, Paul
Aragó, Juan
Grancini, Giulia
Molina-Ontoria, Agustín
Ortí, Enrique
Martín, Nazario
Khaja Nazeeruddin, Mohammad
547
Hole-transporting materials
perovskite solar cells
anthratetrathiophenes
alkyl
chains
hole transfer dynamics
Química orgánica (Química)
2306 Química Orgánica
The synthesis and characterization of a series of novel small-molecule hole-transporting materials (HTMs) based on an anthra[1,2-b:4,3-b′:5,6-b′′:8,7-b′′′]tetrathiophene (ATT) core are reported. The new compounds follow an easy synthetic route and have no need of expensive purification steps. The novel HTMs were tested in perovskite solar cells (PSCs) and power conversion efficiencies (PCE) of up to 18.1 % under 1 sun irradiation were 2 measured. This value is comparable with the 17.8 % efficiency obtained using spiroOMeTAD as a reference compound. Similarly, a significant quenching of the Photoluminescence in the first nanosecond is observed, indicative of effective hole transfer.Additionally, the influence of introducing aliphatic alkyl chains acting as solubilizers on the device performance of the ATT molecules is investigated. Replacing the methoxy groups on the triarylamine sites by butoxy-, hexoxy- or decoxy-substituents greatly improved the solubility of the compounds without changing the energy levels, yet at the same time significantly decreasing the conductivity as well as the PCE, 17.3 % for ATT-OBu, 15.7 % for ATT-OHex and 9.7 % for ATT-ODec.
Unión Europea. FP7
Unión Europea. H2020
European Research Council (ERC)
Comunidad de Madrid
Ministerio de Economía y Competitividad (MINECO)
Generalitat Valenciana
Depto. de Química Orgánica
Fac. de Ciencias Químicas
TRUE
pub
2023-06-17T21:51:25Z
2023-06-17T21:51:25Z
2016-11-21
journal article
https://hdl.handle.net/20.500.14352/17661
1614-6840 (Online) 1614-6832 (Print)
10.1002/aenm.201601674
eng
CHIRALLCARBON (3204419)
PROMETEO (742223)
FOTOCARBON (S2013/MIT-2841)
CTQ2014-52045-R and CTQ2015-71154-P and Unidad de Excelencia María de Maeztu MDM-2015-0538)
open access
application/pdf
Wiley Online Library