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.


Petri Henrik Murto

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

Zewdneh Genene

Addis Ababa University

Ambo University

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry

Cindy Montenegro Benavides

University of Erlangen-Nuremberg (FAU)


Xiaofeng Xu

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Polymer Technology

A. Sharma

University of Bordeaux

Flinders University

Xun Pan

Flinders University

Oliver Schmidt


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


Ergang Wang

Chalmers, Chemistry and Chemical Engineering, Applied Chemistry, Ergang Wang Group

ACS Macro Letters

2161-1653 (eISSN)

Vol. 7 4 395-400

Subject Categories

Polymer Chemistry

Materials Chemistry

Condensed Matter Physics



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