| Enhancing sensitivity of a single ZnO micro-/nanowire photodetector by piezo-phototronic effect. | |
| | |
MedLine Citation:
|
PMID: 20919691 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
We demonstrate the piezoelectric effect on the responsivity of a metal-semiconductor-metal ZnO micro-/nanowire photodetector. The responsivity of the photodetector is respectively enhanced by 530%, 190%, 9%, and 15% upon 4.1 pW, 120.0 pW, 4.1 nW, and 180.4 nW UV light illumination onto the wire by introducing a -0.36% compressive strain in the wire, which effectively tuned the Schottky barrier height at the contact by the produced local piezopotential. After a systematic study on the Schottky barrier height change with tuning of the strain and the excitation light intensity, an in-depth understanding is provided about the physical mechanism of the coupling of piezoelectric, optical, and semiconducting properties. Our results show that the piezo-phototronic effect can enhance the detection sensitivity more than 5-fold for pW levels of light detection. |
| | |
Authors:
|
Qing Yang; Xin Guo; Wenhui Wang; Yan Zhang; Sheng Xu; Der Hsien Lien; Zhong Lin Wang |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't; Research Support, U.S. Gov't, Non-P.H.S. |
Journal Detail:
|
Title: ACS nano Volume: 4 ISSN: 1936-086X ISO Abbreviation: ACS Nano Publication Date: 2010 Oct |
Date Detail:
|
Created Date: 2010-10-26 Completed Date: 2011-02-02 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101313589 Medline TA: ACS Nano Country: United States |
Other Details:
|
Languages: eng Pagination: 6285-91 Citation Subset: IM |
Affiliation:
|
School of Material Science and Engineering, Georgia Institute of Technology, Atlanta, Georgia 30332, USA. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Biocompatible Materials
/
chemistry Electrochemistry / methods Light Metal Nanoparticles / chemistry* Metals / chemistry Models, Statistical Nanotechnology / methods* Physics / methods Semiconductors Zinc Oxide / chemistry* |
| Chemical | |
Reg. No./Substance:
|
0/Biocompatible Materials; 0/Metals; 1314-13-2/Zinc Oxide |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Mapping octahedral tilts and polarization across a domain wall in BiFeO3 from Z-contrast scanning tr...
Next Document: Contribution toward comprehension of contact angle values on single polydimethylsiloxane and poly(et...