2026-06-08T04:19:41Zhttps://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
Docta Complutense
author
Zimmermann, Iwan
author
Urieta Mora, Javier
author
Gratia, Paul
author
Aragó, Juan
author
Grancini, Giulia
author
Molina-Ontoria, Agustín
author
Ortí, Enrique
author
Martín, Nazario
author
Khaja Nazeeruddin, Mohammad
2023-06-17T21:51:25Z
2023-06-17T21:51:25Z
2016-11-21
1614-6840 (Online) 1614-6832 (Print)
10.1002/aenm.201601674
https://hdl.handle.net/20.500.14352/17661
http://onlinelibrary.wiley.com/doi/10.1002/aenm.201601674/epdf
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.
eng
High-Efficiency Perovskite Solar Cells using Molecularly-Engineered, Thiophene-Rich,Hole-Transporting Materials: Influence of Alkyl Chain Length on Power Conversion Efficiency
journal article
URL
https://docta.ucm.es/bitstreams/5df3aad2-3978-4ae8-869f-c7bd80d95ed0/download
File
MD5
24699fec6c3877958e93068bfbed68fb
4250449
application/pdf
Adv. Energy Mater_2016_preprint.pdf
URL
https://docta.ucm.es/bitstreams/96c920cb-9ce1-4239-812e-7d19eca02ba0/download
File
MD5
4a057debbfb28871edf14e308d91e237
61320
text/plain
Adv. Energy Mater_2016_preprint.pdf.txt