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

Journal Article · · MRS Communications
DOI:https://doi.org/10.1557/mrc.2017.3· OSTI ID:1604640
 [1];  [2];  [3];  [4];  [4];  [5];  [6];  [1];  [1];  [1]
  1. Univ. of Newcastle, Callaghan, NSW (Australia)
  2. Univ. of Newcastle, Callaghan, NSW (Australia); CSIRO Energy Technology, Newcastle, NSW (Australia)
  3. Agency for Science, Technology, and Research (A*STAR), Singapore (Singapore)
  4. Univ. of South Australia, SA (Australia); Chalmers Univ. of Technology, Goteborg (Sweden)
  5. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Advanced Light Source (ALS)
  6. Agency for Science, Technology, and Research (A*STAR), Singapore (Singapore); Queensland Univ. of Technology (QUT), Brisbane (Australia)

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 C71 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 C61 butyric acid methyl ester (PC61BM) system. Finally, we find that material Tg 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.

Research Organization:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES) (SC-22); Commonwealth of Australia
DOE Contract Number:
AC02-05CH11231
OSTI ID:
1604640
Journal Information:
MRS Communications, Journal Name: MRS Communications Journal Issue: 1 Vol. 7; ISSN 2159-6859
Publisher:
Materials Research Society - Cambridge University Press
Country of Publication:
United States
Language:
English

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