Ferroelectric field effect induced charge carrier transport modulation at quantum dot solar cell heterojunction interface

Cho, Yuljae, Hou, Bo ORCID: https://orcid.org/0000-0001-9918-8223, Giraud, Paul, Pak, Sangyeon and Cha, SeungNam 2021. Ferroelectric field effect induced charge carrier transport modulation at quantum dot solar cell heterojunction interface. ACS Applied Energy Materials 4 (11) , 12056–12062. 10.1021/acsaem.1c01525

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Abstract

Inherent unidealistic properties associated with materials and device structures inevitably limit the performance of photovoltaic devices. To overcome the inherent limit, judicious use of ferroelectric materials has been introduced. Here, we demonstrate modulations of charge carrier transport at the heterojunction interface with respect to polarities of electric dipoles. Attributed to an additional electric field by the ferroelectric effect, a built-in potential at the junction increases, leading to enhanced charge carrier transport, reduced charge recombination, and, consequently, enhanced power conversion efficiency of lead sulfide quantum dot solar cells. The coupling of the ferroelectric effect with the solar cell provides an important platform to further develop solution-processable flat panel solar cell technology.

Item Type:	Article
Date Type:	Publication
Status:	Published
Schools:	Physics and Astronomy
Publisher:	American Chemical Society
ISSN:	2574-0962
Date of First Compliant Deposit:	20 November 2021
Date of Acceptance:	15 October 2021
Last Modified:	07 Nov 2023 04:22
URI:	https://orca.cardiff.ac.uk/id/eprint/145638

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