High performance all-polymer photodetector comprising a donor-Acceptor-Acceptor structured indacenodithiophene-bithieno[3,4-c] pyrroletetrone copolymer
Journal article, 2018
The synthesis of an acceptor polymer PIDT-2TPD, comprising indacenodithiophene (IDT) as the electron-rich unit and an interconnected bithieno[3,4-c]pyrrole-4,4′,6,6′-Tetrone (2TPD) as the electron-deficient unit, and its application for all-polymer photodetectors is reported. The optical, electrochemical, charge transport, and device properties of a blend of poly(3-hexylthiophene) and PIDT-2TPD are studied. The blend shows strong complementary absorption and balanced electron and hole mobility, which are desired properties for a photoactive layer. The device exhibits dark current density in the order of 10 -5 mA/cm 2 , external quantum efficiency broadly above 30%, and nearly planar detectivity over the entire visible spectral range (maximum of 1.1 × 10 12 Jones at 610 nm) under-5 V bias. These results indicate that PIDT-2TPD is a highly functional new type of acceptor and further motivate the use of 2TPD as a building block for other n-Type materials.
Author
Petri Henrik Murto
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Zewdneh Genene
Addis Ababa University
Ambo University
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
Cindy Montenegro Benavides
University of Erlangen-Nuremberg (FAU)
Siemens
Xiaofeng Xu
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
A. Sharma
University of Bordeaux
Flinders University
Xun Pan
Flinders University
Oliver Schmidt
Siemens
Christoph J. Brabec
Das Bayerische Zentrum fur Angewandte Energieforschung e.V.
University of Erlangen-Nuremberg (FAU)
Mats Andersson
Flinders University
W. Mammo
Addis Ababa University
Sandro F. Tedde
Siemens
Ergang Wang
Chalmers, Chemistry and Chemical Engineering, Applied Chemistry
ACS Macro Letters
2161-1653 (eISSN)
Vol. 7 4 395-400Subject Categories
Polymer Chemistry
Materials Chemistry
Condensed Matter Physics
DOI
10.1021/acsmacrolett.8b00009