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A Comparison of Charge Carrier Dynamics in Organic and Perovskite Solar Cells

Jiaying Wu, Hyojung Cha, Tian Du, Yifan Dong, Weidong Xu, Chieh‐Ting Lin, James Durrant Orcid Logo

Advanced Materials, Volume: 34, Issue: 2, Start page: 2101833

Swansea University Author: James Durrant Orcid Logo

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DOI (Published version): 10.1002/adma.202101833

Abstract

The charge carrier dynamics in organic solar cells and organic–inorganic hybrid metal halide perovskite solar cells, two leading technologies in thin‐film photovoltaics, are compared. The similarities and differences in charge generation, charge separation, charge transport, charge collection, and c...

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Published in: Advanced Materials
ISSN: 0935-9648 1521-4095
Published: Wiley 2022
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa58653
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Abstract: The charge carrier dynamics in organic solar cells and organic–inorganic hybrid metal halide perovskite solar cells, two leading technologies in thin‐film photovoltaics, are compared. The similarities and differences in charge generation, charge separation, charge transport, charge collection, and charge recombination in these two technologies are discussed, linking these back to the intrinsic material properties of organic and perovskite semiconductors, and how these factors impact on photovoltaic device performance is elucidated. In particular, the impact of exciton binding energy, charge transfer states, bimolecular recombination, charge carrier transport, sub‐bandgap tail states, and surface recombination is evaluated, and the lessons learned from transient optical and optoelectronic measurements are discussed. This perspective thus highlights the key factors limiting device performance and rationalizes similarities and differences in design requirements between organic and perovskite solar cells.
Keywords: charge recombination; charge transport; charge trapping; photophysics; solar cells
College: College of Engineering
Funders: UKRI Global Challenge Research Fund Grant: EP/P032591/1 Engineering and Physical Sciences Research Council Grant: EP/T028513/1 Identifier: Id http://dx.doi.org/10.13039/501100000266 Korean NRF GRL project Grant: NRF‐2017K1A1A2013153 China Scholarship Imperial College London Identifier: Id http://dx.doi.org/10.13039/501100000761 National Research Foundation of Korea Grant: NRF‐2021R1C1C100903 Grant: NRF‐2021R1A4A1031761 Identifier: Id http://dx.doi.org/10.13039/501100003725 Engineering and Physical Sciences Research Council Grant: EP/T028513/1 Identifier: Id http://dx.doi.org/10.13039/501100000266
Issue: 2
Start Page: 2101833