Cathodoluminescence of single ZnO nanorod heterostructures

Bernard Piechal; Jinkyoung Yoo; Abdelhamid Elshaer; Augustine Che Mofor; Gyu Chul Yi; Audrey Bakin; Andreas Waag; Fabrice Donatini; Le Si Dang

doi:10.1002/pssb.200675104

Cathodoluminescence of single ZnO nanorod heterostructures

Bernard Piechal
, Jinkyoung Yoo
, Abdelhamid Elshaer
, Augustine Che Mofor
, Gyu Chul Yi
, Audrey Bakin
, Andreas Waag
, Fabrice Donatini
, Le Si Dang

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

Optical properties of ZnO-based single nanorods are probed by cathodoluminescence (CL) measurements at T= 5 K. We observe a variation of the ZnO near band edge CL by three orders of magnitude along the nanorod axis, accompanied by a spectral blueshift of 10-30 meV. This indicates a rather poor structural quality of the nanorod bottom part, close to the substrate. ZnO/ZnMgO quantum wells grown on top of ZnO nanorods are found to exhibit much stronger confinement effects as compared to their twodimensional counterparts, suggesting a reduced spontaneous and piezoelectric polarization effects.

Original language	English
Pages (from-to)	1458-1461
Number of pages	4
Journal	Physica Status Solidi (B) Basic Research
Volume	244
Issue number	5
DOIs	https://doi.org/10.1002/pssb.200675104
State	Published - May 1 2007
Externally published	Yes

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title = "Cathodoluminescence of single ZnO nanorod heterostructures",

abstract = "Optical properties of ZnO-based single nanorods are probed by cathodoluminescence (CL) measurements at T= 5 K. We observe a variation of the ZnO near band edge CL by three orders of magnitude along the nanorod axis, accompanied by a spectral blueshift of 10-30 meV. This indicates a rather poor structural quality of the nanorod bottom part, close to the substrate. ZnO/ZnMgO quantum wells grown on top of ZnO nanorods are found to exhibit much stronger confinement effects as compared to their twodimensional counterparts, suggesting a reduced spontaneous and piezoelectric polarization effects.",

author = "Bernard Piechal and Jinkyoung Yoo and Abdelhamid Elshaer and Mofor, \{Augustine Che\} and Yi, \{Gyu Chul\} and Audrey Bakin and Andreas Waag and Fabrice Donatini and Dang, \{Le Si\}",

year = "2007",

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doi = "10.1002/pssb.200675104",

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T1 - Cathodoluminescence of single ZnO nanorod heterostructures

AU - Piechal, Bernard

AU - Yoo, Jinkyoung

AU - Elshaer, Abdelhamid

AU - Mofor, Augustine Che

AU - Yi, Gyu Chul

AU - Bakin, Audrey

AU - Waag, Andreas

AU - Donatini, Fabrice

AU - Dang, Le Si

PY - 2007/5/1

Y1 - 2007/5/1

N2 - Optical properties of ZnO-based single nanorods are probed by cathodoluminescence (CL) measurements at T= 5 K. We observe a variation of the ZnO near band edge CL by three orders of magnitude along the nanorod axis, accompanied by a spectral blueshift of 10-30 meV. This indicates a rather poor structural quality of the nanorod bottom part, close to the substrate. ZnO/ZnMgO quantum wells grown on top of ZnO nanorods are found to exhibit much stronger confinement effects as compared to their twodimensional counterparts, suggesting a reduced spontaneous and piezoelectric polarization effects.

AB - Optical properties of ZnO-based single nanorods are probed by cathodoluminescence (CL) measurements at T= 5 K. We observe a variation of the ZnO near band edge CL by three orders of magnitude along the nanorod axis, accompanied by a spectral blueshift of 10-30 meV. This indicates a rather poor structural quality of the nanorod bottom part, close to the substrate. ZnO/ZnMgO quantum wells grown on top of ZnO nanorods are found to exhibit much stronger confinement effects as compared to their twodimensional counterparts, suggesting a reduced spontaneous and piezoelectric polarization effects.

UR - https://www.scopus.com/pages/publications/34249001914

U2 - 10.1002/pssb.200675104

DO - 10.1002/pssb.200675104

M3 - Article

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VL - 244

SP - 1458

EP - 1461

JO - Physica Status Solidi (B) Basic Research

JF - Physica Status Solidi (B) Basic Research

IS - 5

ER -

Cathodoluminescence of single ZnO nanorod heterostructures

Abstract

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