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RAIS, D. TOMAN, P. ACHARYA, U. PANTHI, Y.R. MENŠÍK, M. ZHIGUNOV, A. THOTTAPPALI, M.A. PFLEGER, J. VALA, M. MARKOVÁ, A. STŘÍTESKÝ, S. WEITER, M. CIGÁNEK, M. KRAJČOVIČ, J. PAUK, K. IMRAMOVSKÝ, A. ZAYKOV, A. MICHL, J.
Originální název
Singlet Fission in Thin Solid Films of Bis(thienyl)diketopyrrolopyrroles
Typ
článek v časopise ve Web of Science, Jimp
Jazyk
angličtina
Originální abstrakt
The singlet fission (SF) process discovered in bis(thienyl)diketopyrrolopyrroles (TDPPs) can boost their potential for photovoltaics (PV). The crystal structures of TDPP analogs carrying n-hexyl, n-butyl, or 2-(adamant-1-yl)ethyl substituents are similar, but contain increasingly slipped stacked neighbor molecules. The observed SF rate constants, kSF, (7 ± 4), (9 ± 3) and (5.6 ± 1.9) ns-1 for thin films of the three compounds, respectively, are roughly equal, but the triplet quantum yields vary strongly: (120 ± 40), (160 ± 40) and (70 ± 16), respectively. The recent molecular pair model reproduces the near equality of all three kSF at the crystal geometries and identifies all possible pair arrangements in which SF is predicted to be faster, by up to two orders of magnitude. However, it is also clear that the presently non-existent ability to predict the rates of processes competing with SF is pivotal for providing a guide for efforts to optimize the materials for PV.
Klíčová slova
optical spectroscopy, photophysics, singlet fission, thin films, triplet excitons
Autoři
RAIS, D.; TOMAN, P.; ACHARYA, U.; PANTHI, Y.R.; MENŠÍK, M.; ZHIGUNOV, A.; THOTTAPPALI, M.A.; PFLEGER, J.; VALA, M.; MARKOVÁ, A.; STŘÍTESKÝ, S.; WEITER, M.; CIGÁNEK, M.; KRAJČOVIČ, J.; PAUK, K.; IMRAMOVSKÝ, A.; ZAYKOV, A.; MICHL, J.
Vydáno
1. 12. 2020
Nakladatel
Wiley-VCH
ISSN
2192-6506
Periodikum
ChemPlusChem
Ročník
2020
Číslo
85
Stát
Spolková republika Německo
Strany od
2689
Strany do
2703
Strany počet
15
URL
https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cplu.202000623
BibTex
@article{BUT165738, author="RAIS, D. and TOMAN, P. and ACHARYA, U. and PANTHI, Y.R. and MENŠÍK, M. and ZHIGUNOV, A. and THOTTAPPALI, M.A. and PFLEGER, J. and VALA, M. and MARKOVÁ, A. and STŘÍTESKÝ, S. and WEITER, M. and CIGÁNEK, M. and KRAJČOVIČ, J. and PAUK, K. and IMRAMOVSKÝ, A. and ZAYKOV, A. and MICHL, J.", title="Singlet Fission in Thin Solid Films of Bis(thienyl)diketopyrrolopyrroles", journal="ChemPlusChem", year="2020", volume="2020", number="85", pages="2689--2703", doi="10.1002/cplu.202000623", issn="2192-6506", url="https://chemistry-europe.onlinelibrary.wiley.com/doi/10.1002/cplu.202000623" }