Tracing charge transfer states in polymer:fullerene bulk-heterojunctions
Journal article, 2013

Charge transfer state emission in organic bulk-heterojunctions has been demonstrated to be an important loss mechanism for this reason a better understanding of the nature and origin of the charge transfer state is fundamental for the improvement of organic solar cells. Here, the relationship between photophysical and morphological features of a prototypical organic bulk-heterojunction is investigated in blends with different donor-acceptor ratios. By correlating imaging with photoluminescence spectra measured in different areas of the blends, the charge transfer state emission is unambiguously assigned to microscopical regions in which the intermixing of the two organic semiconductors is higher.

Author

M. Manca

University of Groningen

C. Piliego

University of Groningen

Ergang Wang

Chalmers, Chemical and Biological Engineering, Polymer Technology

Mats Andersson

Chalmers, Chemical and Biological Engineering, Polymer Technology

A. Mura

University of Groningen

Universita degli Studi di Cagliari

M. A. Loi

University of Groningen

Journal of Materials Chemistry A

20507488 (ISSN) 20507496 (eISSN)

Vol. 1 25 7321-7325

Subject Categories

Polymer Technologies

DOI

10.1039/c3ta11005b

More information

Latest update

2/28/2018