ZnO tetrapod Schottky photodiodes
ZnO tetrapod Schottky photodiodes
The fabrication of an ultraviolet photodiode employing a single ZnO tetrapod nanocrystal is reported. This diode structure is prepared by depositing W and Pt electrodes to form Ohmic and Schottky contacts, respectively. Dark current-voltage measurements show rectifying behavior. The properties of the metal-semiconductor interface are studied with above and below band gap illumination. It is found that with increasing UV excitation the device converts from a rectifying to an Ohmic behavior. This effect is attributed to a flattening of the energy bands due to the migration of photogenerated carriers within the space charge region at the metal-semiconductor interface.
072104
Newton, Marcus
fac92cce-a9f3-46cd-9f58-c810f7b49c7e
Firth, Steven
23130861-b2b2-45df-8052-aa27c1b0a463
matsuura, Takashi
ad55a727-480b-4423-93ba-cc2e329a0090
Warburton, P.A.
dcf3f5d6-3433-4441-9bb6-24d0ced7ebf7
16 August 2006
Newton, Marcus
fac92cce-a9f3-46cd-9f58-c810f7b49c7e
Firth, Steven
23130861-b2b2-45df-8052-aa27c1b0a463
matsuura, Takashi
ad55a727-480b-4423-93ba-cc2e329a0090
Warburton, P.A.
dcf3f5d6-3433-4441-9bb6-24d0ced7ebf7
Newton, Marcus, Firth, Steven, matsuura, Takashi and Warburton, P.A.
(2006)
ZnO tetrapod Schottky photodiodes.
Applied Physics Letters, 89 (7), .
(doi:10.1063/1.2335949).
Abstract
The fabrication of an ultraviolet photodiode employing a single ZnO tetrapod nanocrystal is reported. This diode structure is prepared by depositing W and Pt electrodes to form Ohmic and Schottky contacts, respectively. Dark current-voltage measurements show rectifying behavior. The properties of the metal-semiconductor interface are studied with above and below band gap illumination. It is found that with increasing UV excitation the device converts from a rectifying to an Ohmic behavior. This effect is attributed to a flattening of the energy bands due to the migration of photogenerated carriers within the space charge region at the metal-semiconductor interface.
This record has no associated files available for download.
More information
Published date: 16 August 2006
Identifiers
Local EPrints ID: 451485
URI: http://eprints.soton.ac.uk/id/eprint/451485
ISSN: 0003-6951
PURE UUID: 9cdeadb6-e6de-4537-be78-262ea99d47bb
Catalogue record
Date deposited: 30 Sep 2021 16:34
Last modified: 17 Mar 2024 03:33
Export record
Altmetrics
Contributors
Author:
Steven Firth
Author:
Takashi matsuura
Author:
P.A. Warburton
Download statistics
Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.
View more statistics
