TY  - JOUR
AU  - Caicedo-Reina, Mauricio
AU  - Rocha-Ortiz, Juan S.
AU  - Wu, Jianchang
AU  - Bornschlegl, Andreas J.
AU  - Leon, Salvador
AU  - Barabash, Anastasia
AU  - Dario Perea, Jose
AU  - Wang, Yunuo
AU  - Arango-Marín, Vanessa
AU  - Ortiz, Alejandro
AU  - Lüer, Larry
AU  - Hauch, Jens A.
AU  - Insuasty, Braulio
AU  - Brabec, Christoph
TI  - Comparative Study of Iminodibenzyl and Diphenylamine Derivatives as Hole Transport Materials in Inverted Perovskite Solar Cells
JO  - Chemistry - a European journal
VL  - 31
IS  - 13
SN  - 0947-6539
CY  - Weinheim
PB  - Wiley-VCH
M1  - FZJ-2025-01871
SP  - e202404251
PY  - 2025
AB  - 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.
LB  - PUB:(DE-HGF)16
C6  - 39807597
UR  - <Go to ISI:>//WOS:001407710600001
DO  - DOI:10.1002/chem.202404251
UR  - https://juser.fz-juelich.de/record/1040384
ER  -