Diketopyrrolopyrrole-based polymer:fullerene nanoparticle films with thermally stable morphology for organic photovoltaic applications
Journal article, 2017

Polymer:fullerene nanoparticles (NPs) offer two key advantages over bulk heterojunction (BHJ) films for organic photovoltaics (OPVs), water-processability and potentially superior morphological control. Once an optimal active layer morphology is reached, maintaining this morphology at OPV operating temperatures is key to the lifetime of a device. Here we study the morphology of the PDPP-TNT (poly{3,6-dithiophene-2-yl-2,5-di(2-octyldodecyl)-pyrrolo[3,4-c]pyrrole- 1,4-dione-alt-naphthalene}):PC71BM ([6,6]-phenyl C-71 butyric acid methyl ester) NP system and then compare the thermal stability of NP and BHJ films to the common poly(3-hexylthiophene) (P3HT): phenyl C-61 butyric acid methyl ester (PC61BM) system. We find that material T-g plays a key role in the superior thermal stability of the PDPP-TNT:PC71BM system; whereas for the P3HT:PC61BM system, domain structure is critical.

blends

molecular-weight

stability

Materials Science

optimization

polymer solar-cells

photocurrent

device performance

semiconducting polymer

Author

N. P. Holmes

B. Vaughan

E. L. Williams

Renee Kroon

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

Mats Andersson

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

A. L. D. Kilcoyne

P. Sonar

X. J. Zhou

P. Dastoor

W. J. Belcher

MRS Communications

2159-6859 (ISSN) 2159-6867 (eISSN)

Vol. 7 1 67-73

Subject Categories

Polymer Chemistry

Driving Forces

Sustainable development

DOI

10.1557/mrc.2017.3

More information

Created

10/8/2017