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Title: | The Cost of Converting Excitons into Free Charge Carriers in Organic Solar Cells | Authors: | VANDEWAL, Koen MERTENS, Sigurd Benduhn, Johannes LIU, Quan |
Issue Date: | 2020 | Publisher: | AMER CHEMICAL SOC | Source: | Journal of Physical Chemistry Letters, 11 (1) , p. 129 -135 | Abstract: | Efficient exciton dissociation and subsequent generation of free charge carriers at the organic donor-acceptor interface requires a number of electron-transfer processes. It is a common view that these steps result in an unavoidable energy loss in organic photovoltaic devices that is not present in other types of solar cells. The currently best performing organic solar cells with power conversion efficiencies over 16% challenge this view, and no interfacial charge-transfer states with energy significantly lower than the strongly absorbing singlet states are detected within the gap of the used donor and acceptor materials. This Perspective will discuss implications, the remaining sources of energy loss, and open questions to be solved to achieve power conversion efficiencies over 20%. | Notes: | Vandewal, K (reprint author), Hasselt Univ, Inst Mat Res IMO IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. koen.vandewal@uhasselt.be |
Other: | Vandewal, K (reprint author), Hasselt Univ, Inst Mat Res IMO IMOMEC, Wetenschapspk 1, B-3590 Diepenbeek, Belgium. koen.vandewal@uhasselt.be | Document URI: | http://hdl.handle.net/1942/30603 | ISSN: | 1948-7185 | DOI: | 10.1021/acs.jpclett.9b02719 | ISI #: | WOS:000506088000020 | Rights: | 2019 American Chemical Society | Category: | A1 | Type: | Journal Contribution | Validations: | ecoom 2021 |
Appears in Collections: | Research publications |
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koen.pdf Restricted Access | Published version | 630.54 kB | Adobe PDF | View/Open Request a copy |
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