Origin of the red emission in zinc oxide nanophosphors

Vinod Kumar; H. C. Swart; O. M. Ntwaeaborwa; R. E. Kroon; J. J. Terblans; S. K.K. Shaat; A. Yousif; M. M. Duvenhage

doi:10.1016/j.matlet.2013.03.073

Origin of the red emission in zinc oxide nanophosphors

Vinod Kumar, H. C. Swart, O. M. Ntwaeaborwa, R. E. Kroon, J. J. Terblans, S. K.K. Shaat, A. Yousif, M. M. Duvenhage

University of The Free State

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

277 Citations (Scopus)

Abstract

UV and orange-red light emitting zinc oxide nano-phosphors (ZnO NPr) were synthesised by a combustion method using zinc nitrate and zinc acetate as precursors and urea as a fuel. Hexagonal wurtzite structures of ZnO were synthesised. X-ray photoelectron spectroscopy (XPS) indicated that the O1s peak consist of three components: O1 (ZnO), O2 (deficient oxygen; OH groups) and O3 (adsorbed species) centred at 530.3, 531.2 and 532.6 eV, respectively. A broad orange-red emission from 500 to 850 nm was obtained from the ZnO NPr prepared with the nitrate precursor which may be attributed to different kinds of defects, and a sharp UV band, due to the possible passivation of defects, at 392 nm from ZnO NPr prepared with acetate precursor.

Original language	English
Pages (from-to)	57-60
Number of pages	4
Journal	Materials Letters
Volume	101
DOIs	https://doi.org/10.1016/j.matlet.2013.03.073
Publication status	Published - 2013
Externally published	Yes

Keywords

Defects
Phosphors
XPS
ZnO

ASJC Scopus subject areas

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.1016/j.matlet.2013.03.073

Cite this

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title = "Origin of the red emission in zinc oxide nanophosphors",

abstract = "UV and orange-red light emitting zinc oxide nano-phosphors (ZnO NPr) were synthesised by a combustion method using zinc nitrate and zinc acetate as precursors and urea as a fuel. Hexagonal wurtzite structures of ZnO were synthesised. X-ray photoelectron spectroscopy (XPS) indicated that the O1s peak consist of three components: O1 (ZnO), O2 (deficient oxygen; OH groups) and O3 (adsorbed species) centred at 530.3, 531.2 and 532.6 eV, respectively. A broad orange-red emission from 500 to 850 nm was obtained from the ZnO NPr prepared with the nitrate precursor which may be attributed to different kinds of defects, and a sharp UV band, due to the possible passivation of defects, at 392 nm from ZnO NPr prepared with acetate precursor.",

keywords = "Defects, Phosphors, XPS, ZnO",

author = "Vinod Kumar and Swart, {H. C.} and Ntwaeaborwa, {O. M.} and Kroon, {R. E.} and Terblans, {J. J.} and Shaat, {S. K.K.} and A. Yousif and Duvenhage, {M. M.}",

year = "2013",

doi = "10.1016/j.matlet.2013.03.073",

language = "English",

volume = "101",

pages = "57--60",

journal = "Materials Letters",

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publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Origin of the red emission in zinc oxide nanophosphors

AU - Kumar, Vinod

AU - Swart, H. C.

AU - Ntwaeaborwa, O. M.

AU - Kroon, R. E.

AU - Terblans, J. J.

AU - Shaat, S. K.K.

AU - Yousif, A.

AU - Duvenhage, M. M.

PY - 2013

Y1 - 2013

N2 - UV and orange-red light emitting zinc oxide nano-phosphors (ZnO NPr) were synthesised by a combustion method using zinc nitrate and zinc acetate as precursors and urea as a fuel. Hexagonal wurtzite structures of ZnO were synthesised. X-ray photoelectron spectroscopy (XPS) indicated that the O1s peak consist of three components: O1 (ZnO), O2 (deficient oxygen; OH groups) and O3 (adsorbed species) centred at 530.3, 531.2 and 532.6 eV, respectively. A broad orange-red emission from 500 to 850 nm was obtained from the ZnO NPr prepared with the nitrate precursor which may be attributed to different kinds of defects, and a sharp UV band, due to the possible passivation of defects, at 392 nm from ZnO NPr prepared with acetate precursor.

AB - UV and orange-red light emitting zinc oxide nano-phosphors (ZnO NPr) were synthesised by a combustion method using zinc nitrate and zinc acetate as precursors and urea as a fuel. Hexagonal wurtzite structures of ZnO were synthesised. X-ray photoelectron spectroscopy (XPS) indicated that the O1s peak consist of three components: O1 (ZnO), O2 (deficient oxygen; OH groups) and O3 (adsorbed species) centred at 530.3, 531.2 and 532.6 eV, respectively. A broad orange-red emission from 500 to 850 nm was obtained from the ZnO NPr prepared with the nitrate precursor which may be attributed to different kinds of defects, and a sharp UV band, due to the possible passivation of defects, at 392 nm from ZnO NPr prepared with acetate precursor.

KW - Defects

KW - Phosphors

KW - XPS

KW - ZnO

UR - http://www.scopus.com/inward/record.url?scp=84880068497&partnerID=8YFLogxK

U2 - 10.1016/j.matlet.2013.03.073

DO - 10.1016/j.matlet.2013.03.073

M3 - Article

AN - SCOPUS:84880068497

SN - 0167-577X

VL - 101

SP - 57

EP - 60

JO - Materials Letters

JF - Materials Letters

ER -

Origin of the red emission in zinc oxide nanophosphors

Abstract

Keywords

ASJC Scopus subject areas

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