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
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"
}