Enhanced crystalline morphology of a ladder-type polymer bulk-heterojunction device by blade-coating

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

8 Scopus Citations
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Author(s)

  • Jong H. Kim
  • Jae Woong Jung
  • Spencer T. Williams
  • Feng Liu
  • Thomas P. Russell

Detail(s)

Original languageEnglish
Pages (from-to)10936-10939
Journal / PublicationNanoscale
Volume7
Issue number25
Publication statusPublished - 7 Jul 2015
Externally publishedYes

Abstract

A blade-coating process was employed to fabricate bulk-heterojunction (BHJ) polymer solar cells based on a ladder-type polymer (PIDT-PhanQ) with low crystallinity. Compared to the devices processed by a conventional spin-coating method, an intriguing morphology with enhanced phase-separation and increased crystallinity was achieved. As a result, power conversion efficiency up to 7.25% could be achieved from the blade-coated PIDT-PhanQ:PC71BM BHJ film, surpassing the original value obtained by spin-coating (6.29%). This improved photovoltaic performance is attributed to the improved charge carrier mobilities, which correlates well with the increased crystallinity and the organized network of the donor-acceptor phases that produce efficient charge-transporting pathways.

Citation Format(s)

Enhanced crystalline morphology of a ladder-type polymer bulk-heterojunction device by blade-coating. / Kim, Jong H.; Jung, Jae Woong; Williams, Spencer T.; Liu, Feng; Russell, Thomas P.; Jen, Alex K.-Y.

In: Nanoscale, Vol. 7, No. 25, 07.07.2015, p. 10936-10939.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review