%0 Journal Article
%A Caicedo-Reina, Mauricio
%A Rocha-Ortiz, Juan S.
%A Wu, Jianchang
%A Bornschlegl, Andreas J.
%A Leon, Salvador
%A Barabash, Anastasia
%A Dario Perea, Jose
%A Wang, Yunuo
%A Arango-Marín, Vanessa
%A Ortiz, Alejandro
%A Lüer, Larry
%A Hauch, Jens A.
%A Insuasty, Braulio
%A Brabec, Christoph
%T Comparative Study of Iminodibenzyl and Diphenylamine Derivatives as Hole Transport Materials in Inverted Perovskite Solar Cells
%J Chemistry - a European journal
%V 31
%N 13
%@ 0947-6539
%C Weinheim
%I Wiley-VCH
%M FZJ-2025-01871
%P e202404251
%D 2025
%X Perovskite solar cells (PSCs) have recently achieved over 26 % power conversion efficiency, challenging the dominance of silicon-based alternatives. This progress is significantly driven by innovations in hole transport materials (HTMs), which notably influence the efficiency and stability of PSCs. However, conventional organic HTMs like Spiro-OMeTAD and PTAA, although highly efficient, suffer from thermal degradation, moisture ingress, and high cost. This study explores the potential of iminodibenzyl, a moiety known for its strong electron-donating capabilities in pharmaceutical applications, as a novel HTM. A series of fluorene-based derivatives incorporating iminodibenzyl (TMF-2 and TDF-2) and diphenylamine (TMF-1 and TDF-1) units were synthesized and characterized. The new HTMs demonstrated commendable optical, electrochemical, and thermal properties, as well as enhanced photostability. Among them, TDF-2 achieved a power conversion efficiency (PCE) of 19.38 %, the highest of the new materials. Although these efficiencies are slightly lower than the benchmark PTAA (20.20 %), the study underscores the potential of iminodibenzyl to enhance photostability and increase HOMO levels, making it a promising candidate for future HTM development in PSCs.
%F PUB:(DE-HGF)16
%9 Journal Article
%$ 39807597
%U <Go to ISI:>//WOS:001407710600001
%R 10.1002/chem.202404251
%U https://juser.fz-juelich.de/record/1040384