Hole-Transporting Small Molecules Based on Thiophene Cores for High Efficiency Perovskite Solar Cells
2014 (English)In: ChemSusChem, ISSN 1864-5631, E-ISSN 1864-564X, Vol. 7, no 12, 3420-3425 p.Article in journal (Refereed) Published
Two new electron-rich molecules, 2,3,4,5-tetra[4,4'-bis(methoxyphenyl)aminophen-4 ''-yl]-thiophene (H111) and 4,4',5,5'-tetra[4,4'-bis(methoxyphenyl) aminophen-4 ''-yl]-2,2'-bithiophene (H112), which contain thiophene cores with arylamine side groups, are reported. When used as the hole-transporting material (HTM) in perovskite-based solar cell devices, power conversion efficiencies of up to 15.4% under AM 1.5G solar simulation were obtained. This is the highest efficiency achieved with HTMs not composed of 2,2',7,7'-tetrakis(N,N'-di-p-methoxyphenylamine)-9,9'-spirobifluorene (spiro-OMeTAD) and its isomers. Both HTMs, especially H111, have great potential to replace expensive spiro-OMeTAD given their much simpler and less expensive syntheses.
Place, publisher, year, edition, pages
2014. Vol. 7, no 12, 3420-3425 p.
dyes/pigments, electrochemistry, heterocycles, perovskite phases, solar cells
IdentifiersURN: urn:nbn:se:uu:diva-241418DOI: 10.1002/cssc.201402587ISI: 000345976200032PubMedID: 25233841OAI: oai:DiVA.org:uu-241418DiVA: diva2:781921