ZnCdO/ZnO coaxial multiple quantum well nanowire heterostructures and optical properties

Chuanwei Cheng; Bo Liu; Edbert Jarvis Sie; Weiwei Zhou; Jixuan Zhang; Hao Gong; Cheng Hon Alfred Huan; Tze Chien Sum; Handong Sun; Hong Jin Fan

doi:10.1021/jp911310r

ZnCdO/ZnO coaxial multiple quantum well nanowire heterostructures and optical properties

Chuanwei Cheng, Bo Liu, Edbert Jarvis Sie, Weiwei Zhou, Jixuan Zhang, Hao Gong, Cheng Hon Alfred Huan, Tze Chien Sum, Handong Sun, Hong Jin Fan

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

32 Citations (Scopus)

Abstract

High quality vertical-aligned arrays of ZnCdO/ZnO coaxial multiple-quantum-well (MQW) nanowire heterostructures are fabricated for the first time by combining a simple chemical vapor deposition (CVD) and pulsed laser deposition (PLD) method. The ZnO nanowire core enables epitaxial and dislocation-free growth of uniform ZnCdO/ZnO quantum wells. Both steady-state and time-resolved photoluminescence measurements of the MQW nanowires are performed in the temperature range of 10-300 K. Strong quantum confinement and carrier localization effect are verified. In addition, an S-shaped temperature dependence is observed for both the exciton emission energy (E_p) and their lifetime in ZnCdO MQWs, which has not previously been reported in ZnMgO MQWs. A simple phenomenological model was introduced to explain this anomalous behavior. Such ZnCdO/ZnO coaxial MQW nanowires might find applications in nanoscale laser sources and other oxide-based quantum devices.

Original language	English
Pages (from-to)	3863-3868
Number of pages	6
Journal	Journal of Physical Chemistry C
Volume	114
Issue number	9
DOIs	https://doi.org/10.1021/jp911310r
Publication status	Published - Mar 11 2010
Externally published	Yes

ASJC Scopus Subject Areas

Electronic, Optical and Magnetic Materials
General Energy
Physical and Theoretical Chemistry
Surfaces, Coatings and Films

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@article{399114355da944268c07225096ace386,

title = "ZnCdO/ZnO coaxial multiple quantum well nanowire heterostructures and optical properties",

abstract = "High quality vertical-aligned arrays of ZnCdO/ZnO coaxial multiple-quantum-well (MQW) nanowire heterostructures are fabricated for the first time by combining a simple chemical vapor deposition (CVD) and pulsed laser deposition (PLD) method. The ZnO nanowire core enables epitaxial and dislocation-free growth of uniform ZnCdO/ZnO quantum wells. Both steady-state and time-resolved photoluminescence measurements of the MQW nanowires are performed in the temperature range of 10-300 K. Strong quantum confinement and carrier localization effect are verified. In addition, an S-shaped temperature dependence is observed for both the exciton emission energy (Ep) and their lifetime in ZnCdO MQWs, which has not previously been reported in ZnMgO MQWs. A simple phenomenological model was introduced to explain this anomalous behavior. Such ZnCdO/ZnO coaxial MQW nanowires might find applications in nanoscale laser sources and other oxide-based quantum devices.",

author = "Chuanwei Cheng and Bo Liu and Sie, {Edbert Jarvis} and Weiwei Zhou and Jixuan Zhang and Hao Gong and {Alfred Huan}, {Cheng Hon} and Sum, {Tze Chien} and Handong Sun and Fan, {Hong Jin}",

year = "2010",

month = mar,

day = "11",

doi = "10.1021/jp911310r",

language = "English",

volume = "114",

pages = "3863--3868",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

number = "9",

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TY - JOUR

T1 - ZnCdO/ZnO coaxial multiple quantum well nanowire heterostructures and optical properties

AU - Cheng, Chuanwei

AU - Liu, Bo

AU - Sie, Edbert Jarvis

AU - Zhou, Weiwei

AU - Zhang, Jixuan

AU - Gong, Hao

AU - Alfred Huan, Cheng Hon

AU - Sum, Tze Chien

AU - Sun, Handong

AU - Fan, Hong Jin

PY - 2010/3/11

Y1 - 2010/3/11

N2 - High quality vertical-aligned arrays of ZnCdO/ZnO coaxial multiple-quantum-well (MQW) nanowire heterostructures are fabricated for the first time by combining a simple chemical vapor deposition (CVD) and pulsed laser deposition (PLD) method. The ZnO nanowire core enables epitaxial and dislocation-free growth of uniform ZnCdO/ZnO quantum wells. Both steady-state and time-resolved photoluminescence measurements of the MQW nanowires are performed in the temperature range of 10-300 K. Strong quantum confinement and carrier localization effect are verified. In addition, an S-shaped temperature dependence is observed for both the exciton emission energy (Ep) and their lifetime in ZnCdO MQWs, which has not previously been reported in ZnMgO MQWs. A simple phenomenological model was introduced to explain this anomalous behavior. Such ZnCdO/ZnO coaxial MQW nanowires might find applications in nanoscale laser sources and other oxide-based quantum devices.

AB - High quality vertical-aligned arrays of ZnCdO/ZnO coaxial multiple-quantum-well (MQW) nanowire heterostructures are fabricated for the first time by combining a simple chemical vapor deposition (CVD) and pulsed laser deposition (PLD) method. The ZnO nanowire core enables epitaxial and dislocation-free growth of uniform ZnCdO/ZnO quantum wells. Both steady-state and time-resolved photoluminescence measurements of the MQW nanowires are performed in the temperature range of 10-300 K. Strong quantum confinement and carrier localization effect are verified. In addition, an S-shaped temperature dependence is observed for both the exciton emission energy (Ep) and their lifetime in ZnCdO MQWs, which has not previously been reported in ZnMgO MQWs. A simple phenomenological model was introduced to explain this anomalous behavior. Such ZnCdO/ZnO coaxial MQW nanowires might find applications in nanoscale laser sources and other oxide-based quantum devices.

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DO - 10.1021/jp911310r

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SN - 1932-7447

VL - 114

SP - 3863

EP - 3868

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 9

ER -

ZnCdO/ZnO coaxial multiple quantum well nanowire heterostructures and optical properties

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