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Enhanced photocurrent response in photocells made with platinum-poly-yne/C60 blends by photoinduced electron transfer

Title data

Köhler, Anna ; Wittmann, H. F. ; Friend, Richard H. ; Khan, Muhammad S. ; Lewis, Jack:
Enhanced photocurrent response in photocells made with platinum-poly-yne/C60 blends by photoinduced electron transfer.
In: Synthetic Metals. Vol. 77 (1996) Issue 1-3 . - pp. 147-150.
ISSN 0379-6779
DOI: https://doi.org/10.1016/0379-6779(96)80076-2

Abstract in another language

We report photocurrent and photoluminescence measurements on blends of the organometallic polymer Pt-poly-yne and C60. Due to efficient intersystem crossing, triplet excitons with a binding energy of at least 0.8 eV are created after photoexcitation of Pt-poly-yne. We find that electrons are transferred from Pt-poly-yne onto C60 by efficient ionization of the triplet exciton. This process gives rise to a photocurrent quantum yield of up to 1–2% in photocells fabricated in a layer structure of indium-tin oxide (ITO)/Pt-poly-yne and 7 wt.% C60/aluminium. Evidence for the ionization of the strongly bound triplet excitons is provided by studies of luminescence in the blends. There is only partial quenching of the singlet emission band, but complete quenching of the triplet emission band, and the lifetime of the triplet emission at room temperature is reduced from 2 to 0.1 μs upon addition of 7 wt.% C60.

Further data

Item Type: Article in a journal
Refereed: No
Keywords: Fullerene; Photocurrent; Photocells; Blends; Platinum
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie - Univ.-Prof. Dr. Anna Köhler
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 18 Mar 2015 10:33
Last Modified: 18 Mar 2015 10:33
URI: https://eref.uni-bayreuth.de/id/eprint/8491