UV/ozone assisted local graphene (p)/ZnO(n) heterojunctions as a nanodiode rectifier

Parikshit, S and Badhulika, Sushmee (2016) UV/ozone assisted local graphene (p)/ZnO(n) heterojunctions as a nanodiode rectifier. Journal of Physics D: Applied Physics, 49 (26). ISSN 0022-3727

Full text not available from this repository. (Request a copy)


Here we report the fabrication of a novel graphene/ZnO nanodiode by UV/ozone assisted oxidation of graphene and demonstrate its application as a half-wave rectifier to generate DC voltage. The method involves the use of electrospinning for one-step in situ synthesis and alignment of single Gr/ZnO nanocomposite across metal electrodes. On subsequent UV illumination, graphene oxidizes, which induces p type doping and ZnO being an n type semiconductor, thus resulting in the formation of a nanodiode. The as-fabricated device shows strong non-linear current–voltage characteristic similar to that of conventional semiconductor p–n junction diodes. Excellent rectifying behavior with a rectification ratio of ~103 was observed and the nanodiodes were found to exhibit long-term repeatability in their performance. Ideality factor and barrier height, as calculated by the thermionic emission model, were found to be 1.6 and 0.504 eV respectively. Due to the fact that diodes are the basic building blocks in the electronics and semiconductor industry, the successful fabrication of these nanodiodes based on UV assisted p type doping of graphene indicates that this approach can be used for developing highly scalable and efficient components for nanoelectronics, such as rectifiers and logic gates that find applications in numerous fields.

[error in script]
IITH Creators:
IITH CreatorsORCiD
Badhulika, SushmeeUNSPECIFIED
Item Type: Article
Additional Information: A part of the reported work (characterization) was carried out at the IITBNF, IITB under INUP
Uncontrolled Keywords: nanodiode rectifier, graphene/ZnO nanofiber, electrospinning
Subjects: Others > Electricity
Physics > Astronomy Astrophysics
Divisions: Department of Electrical Engineering
Depositing User: Team Library
Date Deposited: 04 Aug 2016 05:16
Last Modified: 30 Aug 2017 09:21
URI: http://raiith.iith.ac.in/id/eprint/2613
Publisher URL: https://doi.org/10.1088/0022-3727/49/26/265101
OA policy: http://www.sherpa.ac.uk/romeo/issn/0022-3727/
Related URLs:

Actions (login required)

View Item View Item
Statistics for RAIITH ePrint 2613 Statistics for this ePrint Item