Literature DB >> 19257238

Morphology effectively controls singlet-triplet exciton relaxation and charge transport in organic semiconductors.

V K Thorsmølle1, R D Averitt, J Demsar, D L Smith, S Tretiak, R L Martin, X Chi, B K Crone, A P Ramirez, A J Taylor.   

Abstract

We present a comparative study of ultrafast photoconversion dynamics in tetracene (Tc) and pentacene (Pc) single crystals and Pc films using optical pump-probe spectroscopy. Photoinduced absorption in Tc and Pc crystals is activated and temperature-independent, respectively, demonstrating dominant singlet-triplet exciton fission. In Pc films (as well as C60-doped films) this decay channel is suppressed by electron trapping. These results demonstrate the central role of crystallinity and purity in photogeneration processes and will constrain the design of future photovoltaic devices.

Entities:  

Year:  2009        PMID： 19257238     DOI： 10.1103/PhysRevLett.102.017401

Source DB:  PubMed          Journal:  Phys Rev Lett        ISSN： 0031-9007            Impact factor:   9.161


  10 in total

1.  Singlet fission in pentacene through multi-exciton quantum states.

Authors:  Paul M Zimmerman; Zhiyong Zhang; Charles B Musgrave
Journal:  Nat Chem       Date:  2010-06-20       Impact factor: 24.427

2.  Identification of a triplet pair intermediate in singlet exciton fission in solution.

Authors:  Hannah L Stern; Andrew J Musser; Simon Gelinas; Patrick Parkinson; Laura M Herz; Matthew J Bruzek; John Anthony; Richard H Friend; Brian J Walker
Journal:  Proc Natl Acad Sci U S A       Date:  2015-06-09       Impact factor: 11.205

3.  A transferable model for singlet-fission kinetics.

Authors:  Shane R Yost; Jiye Lee; Mark W B Wilson; Tony Wu; David P McMahon; Rebecca R Parkhurst; Nicholas J Thompson; Daniel N Congreve; Akshay Rao; Kerr Johnson; Matthew Y Sfeir; Moungi G Bawendi; Timothy M Swager; Richard H Friend; Marc A Baldo; Troy Van Voorhis
Journal:  Nat Chem       Date:  2014-05-04       Impact factor: 24.427

4.  Vibronically coherent ultrafast triplet-pair formation and subsequent thermally activated dissociation control efficient endothermic singlet fission.

Authors:  Hannah L Stern; Alexandre Cheminal; Shane R Yost; Katharina Broch; Sam L Bayliss; Kai Chen; Maxim Tabachnyk; Karl Thorley; Neil Greenham; Justin M Hodgkiss; John Anthony; Martin Head-Gordon; Andrew J Musser; Akshay Rao; Richard H Friend
Journal:  Nat Chem       Date:  2017-09-11       Impact factor: 24.427

5.  Magnetic field dependence of singlet fission in solutions of diphenyl tetracene.

Authors:  Nicholas J Thompson; Eric Hontz; Wendi Chang; Troy Van Voorhis; Marc Baldo
Journal:  Philos Trans A Math Phys Eng Sci       Date:  2015-06-28       Impact factor: 4.226

6.  The energy barrier in singlet fission can be overcome through coherent coupling and entropic gain.

Authors:  Wai-Lun Chan; Manuel Ligges; X-Y Zhu
Journal:  Nat Chem       Date:  2012-08-19       Impact factor: 24.427

7.  Using temperature dependent fluorescence to evaluate singlet fission pathways in tetracene single crystals.

Authors:  Chad D Cruz; Eric L Chronister; Christopher J Bardeen
Journal:  J Chem Phys       Date:  2020-12-21       Impact factor: 4.304

8.  The entangled triplet pair state in acene and heteroacene materials.

Authors:  Chaw Keong Yong; Andrew J Musser; Sam L Bayliss; Steven Lukman; Hiroyuki Tamura; Olga Bubnova; Rawad K Hallani; Aurélie Meneau; Roland Resel; Munetaka Maruyama; Shu Hotta; Laura M Herz; David Beljonne; John E Anthony; Jenny Clark; Henning Sirringhaus
Journal:  Nat Commun       Date:  2017-07-12       Impact factor: 14.919

9.  Polymorphism influences singlet fission rates in tetracene thin films.

Authors:  Dylan H Arias; Joseph L Ryerson; Jasper D Cook; Niels H Damrauer; Justin C Johnson
Journal:  Chem Sci       Date:  2015-11-06       Impact factor: 9.825

10.  Magnetic dipolar interaction between correlated triplets created by singlet fission in tetracene crystals.

Authors:  Rui Wang; Chunfeng Zhang; Bo Zhang; Yunlong Liu; Xiaoyong Wang; Min Xiao
Journal:  Nat Commun       Date:  2015-10-12       Impact factor: 14.919
  10 in total

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