Publication detail

Diketopyrrolopyrrole: Adjustment of Molecular Properties

VALA, M. HEINRICHOVA, P. WEITER, M.

Original Title

Diketopyrrolopyrrole: Adjustment of Molecular Properties

Type

conference paper

Language

English

Original Abstract

Four derivatives of diketopyrrolopyrrole (DPP) end-capped with benzofuran, benzooxazol, benzothiofen or benzothiazol were used as electron donating material in bulk heterojunction organic solar cells (BHJ OSC). The derivatives were designed to provide increased open circuit voltage due to lower HOMO and thus to approach ideal molecular energy leveling. All of the new materials (benzooxazol, benzothiofen benzothiazol DPPs) showed limited recrystallization upon gentle annealing temperatures compatible with flexible devices fabrication. As a result of lower charge carrier mobility of benzooxazol and benzothiazol derivatives the resulting power conversion efficiency (PCE) was poor. The benzothiofen derivative exhibited improved PCE in as-cast devices compared to previously reported benzofuran DPP. However, due to limited recrystallization, the overall PCE was also not improved in the annealed devices.

Keywords

organic semiconductors; photovoltaic cells; solar energy

Authors

VALA, M.; HEINRICHOVA, P.; WEITER, M.

Released

10. 6. 2018

Publisher

IEEE

Location

Waikoloa, HI

ISBN

978-1-5386-8529-7

Book

World Conference on Photovoltaic Energy Conversion WCPEC

Pages from

1152

Pages to

1154

Pages count

3

URL

https://www.webofscience.com/wos/woscc/full-record/WOS:000469200401040

BibTex

@inproceedings{BUT176941,
  author="VALA, M. and HEINRICHOVA, P. and WEITER, M.",
  title="Diketopyrrolopyrrole: Adjustment of Molecular Properties",
  booktitle="World Conference on Photovoltaic Energy Conversion WCPEC",
  year="2018",
  pages="1152--1154",
  publisher="IEEE",
  address="Waikoloa, HI",
  isbn="978-1-5386-8529-7",
  url="https://www.webofscience.com/wos/woscc/full-record/WOS:000469200401040"
}