Detail publikace

Singlet Fission in Thin Solid Films of Bis(thienyl)diketopyrrolopyrroles

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"
}