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Molecular engineering of small molecules donor materials based on phenoxazine core unit for solution-processed organic solar cells
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2014 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 2, no 27, 10465-10469 p.Article in journal (Refereed) Published
Abstract [en]

A D-pi-A type small molecule POZ4 and a A-pi-D-pi-A type small molecule POZ6, in which phenoxazine was used as the central building block and dicyanovinyl was employed as the electron-withdrawing end-group, have been designed and synthesized. Compared with D-pi-A type donor material POZ4, the donor material POZ6 with A-pi-D-pi-A configuration shows much wider response to solar light. An efficiency of 5.60% was obtained for the POZ6: PC71BM based solar cells, and the device fabricated with POZ6:PC71BM (1 : 1) showed a much better balanced hole and electron mobility of 2.24 x 10(-4) cm(2) V-1 s(-1) and 3.17 x 10(-4) cm(2) V-1 s(-1), respectively.

Place, publisher, year, edition, pages
2014. Vol. 2, no 27, 10465-10469 p.
Keyword [en]
Open-Circuit Voltage, Efficiency, Dyes
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:kth:diva-148184DOI: 10.1039/c4ta02042aISI: 000338124500018Scopus ID: 2-s2.0-84902825630OAI: oai:DiVA.org:kth-148184DiVA: diva2:736680
Funder
Swedish Energy AgencyKnut and Alice Wallenberg Foundation
Note

QC 20140808

Available from: 2014-08-08 Created: 2014-08-04 Last updated: 2014-08-08Bibliographically approved

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Sun, Licheng

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