Title

Influence of electron injection on the temporal response of ZnO homojunction photodiodes

Authors

Authors

O. Lopatiuk-Tirpak; G. Nootz; E. Flitsiyan; L. Chernyak; L. J. Mandalapu; Z. Yang; J. L. Liu; K. Gartsman;A. Osinsky

Comments

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Abbreviated Journal Title

Appl. Phys. Lett.

Keywords

P-TYPE ZNO; Physics, Applied

Abstract

The effects of solid-state electron injection on the peak amplitude and decay time of photosignal in a ZnO-based homojunction UV photodiode were studied using temporal photoresponse measurements under femtosecond pulses of 355 nm radiation. The injection of about 50 C of charge, carried out by applying forward bias to the junction, resulted in a nearly twofold increase of the peak photoresponse and a corresponding increase of the decay constant. Both observations are shown to be a consequence of electron trapping. The long-term stability of the induced changes is also discussed. (C) 2007 American Institute of Physics.

Journal Title

Applied Physics Letters

Volume

91

Issue/Number

4

Publication Date

1-1-2007

Document Type

Article

Language

English

First Page

3

WOS Identifier

WOS:000248345500055

ISSN

0003-6951

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