Mobility-Dependent Charge-Transfer Efficiency at the ZnO/MAPbI<inf>3</inf> Perovskite Contact: Developing a Novel Test Platform for Probing Electrical Contact Properties
- Authors
- Kim, Youngjun; Y.; Park, Byoungnam; B.
- Issue Date
- 2019
- Publisher
- American Chemical Society
- Citation
- Journal of Physical Chemistry C, v.123, no.50, pp.30689 - 30695
- Journal Title
- Journal of Physical Chemistry C
- Volume
- 123
- Number
- 50
- Start Page
- 30689
- End Page
- 30695
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/12835
- DOI
- 10.1021/acs.jpcc.9b08819
- ISSN
- 1932-7447
- Abstract
- Organic-inorganic hybrid perovskites have attracted much attention since the demonstration of a facile formation of functional interfaces in combination with metal oxides in energy and display applications. We report a direct study in which interfacial charge-transfer efficiency at the methylammonium lead iodide (MAPbI3) perovskite/zinc oxide (ZnO) interface is quantified through measurement of the net injection current. Electrical contact and MAPbI3 perovskite channel properties were separately extracted through a novel ZnO/MAPbI3 perovskite/ZnO field-effect transistor test platform device in which highly conductive (0.014 ω cm) ZnO electrodes were used as source and drain electrodes. Through simultaneous probing of the contact and the channel properties, we, for the first time, found that charge-transfer efficiency at the ZnO/MAPbI3 contact is dependent on MAPbI3 perovskite mobility and charge-transport properties in the MAPbI3 channel region extend to the ZnO/MAPbI3 interface influencing the charge-injection efficiency. A comprehensive study of the interfacial charge transfer associated with charge-transport and charge-injection barrier is provided through a discussion of a theoretical charge-injection model in which the net current is determined as a result of the competition between the injection current and the surface recombination current. © 2019 American Chemical Society.
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Collections - College of Engineering > Materials Science and Engineering Major > 1. Journal Articles
- College of Science and Technology > Department of Electronic and Electrical Engineering > 1. Journal Articles
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