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Journal of Materials Science: Materials in Electronics
Published in: Journal of Materials Science: Materials in Electronics 18/2021

10-08-2021

Influence of thermal annealing on the charge generation and transport in PM6-based non-fullerene solar cells

Authors: Rong Hu, Yurong Liu, Liangliang Tian, Wei Zhang, Xiaochuan He

Published in: Journal of Materials Science: Materials in Electronics | Issue 18/2021

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Abstract

To study the influence of thermal annealing on the charge generation and transport in PM6-based non-fullerene solar cells. Morphology, optical and electrochemical properties of active layers as well as electrical properties of polymer solar cells were studied. Furthermore, the photoelectric conversion processes of annealed and unannealed devices were also examined by means of time resolved spectroscopy. The results showed that thermal annealing had a weak influence on the dynamics of exciton states. Besides, annealed device is found to suppress bimolecular recombination owing to its higher charge carrier mobility in ordered donor and acceptor aggregation phases, which led to higher photocurrent and power conversion efficiency than unannealed photovoltaic device.
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Metadata
Title
Influence of thermal annealing on the charge generation and transport in PM6-based non-fullerene solar cells
Authors
Rong Hu
Yurong Liu
Liangliang Tian
Wei Zhang
Xiaochuan He
Publication date
10-08-2021
Publisher
Springer US
Published in
Journal of Materials Science: Materials in Electronics / Issue 18/2021
Print ISSN: 0957-4522
Electronic ISSN: 1573-482X
DOI
https://doi.org/10.1007/s10854-021-06765-x

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