Charge-transfer-induced doping at an electron donor (alpha-sexithiophene)/acceptor (C-60) interface and mobility improvement
- Authors
- Park, Byoungnam; Park, Jonghoo
- Issue Date
- Jan-2014
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- charge transfer; doping; organic field-effect transistors; carrier mobility; excitons; interfaces
- Citation
- PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS, v.8, no.1, pp.74 - 80
- Journal Title
- PHYSICA STATUS SOLIDI-RAPID RESEARCH LETTERS
- Volume
- 8
- Number
- 1
- Start Page
- 74
- End Page
- 80
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/16799
- DOI
- 10.1002/pssr.201308111
- ISSN
- 1862-6254
- Abstract
- We studied various aspects relating to surface charge-transfer-induced doping at an organic/organic interface using in situ electrical measurements with a field-effect transistor (FET) during the formation of the electron donor/acceptor interface. Adsorption of the electron-accepting molecules (C-60) on top of the electron donating molecules (-6T) led to an increase in the FET hole mobility in an -6T film. Under illumination, the FET hole mobility in the -6T film with C-60 deposition was significantly increased in comparison with that in the dark due to exciton dissociation at the C-60/-6T interface, resulting in a large threshold voltage shift. The origin of the mobility increase is explained by the multiple trapping and release (MTR) model in which the mobility is determined by the carrier density. Various phenomena relevant to charge transfer and charge transport at the organic/organic interface are reported and their origins are discussed. ((c) 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > Materials Science and Engineering Major > 1. Journal Articles
![qrcode](https://api.qrserver.com/v1/create-qr-code/?size=55x55&data=https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/16799)
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.