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

N. P. Holmes ; B. Vaughan ; E. L. Williams ; Renee Kroon (Institutionen för kemi och kemiteknik, Polymerteknologi) ; Mats R. Andersson (Institutionen för kemi och kemiteknik, Polymerteknologi) ; A. L. D. Kilcoyne ; P. Sonar ; X. J. Zhou ; P. C. Dastoor ; W. J. Belcher
Mrs Communications (2159-6859). Vol. 7 (2017), 1, p. 67-73.
[Artikel, refereegranskad vetenskaplig]

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.

Nyckelord: polymer solar-cells, molecular-weight, device performance, semiconducting polymer, photocurrent, optimization, stability, blends, Materials Science

Denna post skapades 2017-05-03.
CPL Pubid: 249086


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Institutioner (Chalmers)

Institutionen för kemi och kemiteknik, Polymerteknologi


Hållbar utveckling

Chalmers infrastruktur