Effect of Al concentration on photoluminescence properties of sol-gel derived hydrogen annealed ZnO

Firoz Khan; Sadia Ameen; Minwu Song; Mushahid Husain; Abdul Mobin; Hyung Shik Shin

doi:10.1007/s12540-013-2019-9

Effect of Al concentration on photoluminescence properties of sol-gel derived hydrogen annealed ZnO

Firoz Khan
, Sadia Ameen
, Minwu Song
, Mushahid Husain
, Abdul Mobin
, Hyung Shik Shin^*

^*Corresponding author for this work

Department of Bio-Convergence Science

Research output: Contribution to journal › Journal article › peer-review

9 Scopus citations

Abstract

The effect of the Al/Zn atomic ratio on the photoluminescence properties of hydrogen annealed undoped and Al rich ZnO (AZO) films was studied. The Al/Zn atomic ratios in the AZO films were varied from 0 to 40%. All the AZO films exhibited three peaks in the UV, green and red regions, whereas the undoped ZnO films had two peaks in the UV and green regions. The PL intensity in the UV and red regions increased with an increase in Al concentrations. The highest PL intensity in the UV region was observed in the 20% Al/Zn atomic ratio due to improvement in crystal quality which was also confirmed by XRD measurements. The PL emission in the red region was due to complex luminescent centers like (V_zn-Al_zn)^-. A blue shift was seen in the red region with the introduction of Al. The 20% AZO films obtained the strongest signal at -420 cm^-1, whereas no FTIR signal was observed at 420 cm^-1 in undoped ZnO. The bond signature at -420 cm^-1 might be responsible for the highest PL intensity in NBE and red regions.

Original language	English
Pages (from-to)	245-250
Number of pages	6
Journal	Metals and Materials International
Volume	19
Issue number	2
DOIs	https://doi.org/10.1007/s12540-013-2019-9
State	Published - 2013.03

Keywords

annealing
chemical synthesis
coating
thin films
X-ray diffraction

Quacquarelli Symonds(QS) Subject Topics

Engineering - Mechanical
Materials Science
Physics & Astronomy

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10.1007/s12540-013-2019-9

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@article{9c77affc25a54d24a4ee86e38258a3fa,

title = "Effect of Al concentration on photoluminescence properties of sol-gel derived hydrogen annealed ZnO",

abstract = "The effect of the Al/Zn atomic ratio on the photoluminescence properties of hydrogen annealed undoped and Al rich ZnO (AZO) films was studied. The Al/Zn atomic ratios in the AZO films were varied from 0 to 40\%. All the AZO films exhibited three peaks in the UV, green and red regions, whereas the undoped ZnO films had two peaks in the UV and green regions. The PL intensity in the UV and red regions increased with an increase in Al concentrations. The highest PL intensity in the UV region was observed in the 20\% Al/Zn atomic ratio due to improvement in crystal quality which was also confirmed by XRD measurements. The PL emission in the red region was due to complex luminescent centers like (Vzn-Alzn)-. A blue shift was seen in the red region with the introduction of Al. The 20\% AZO films obtained the strongest signal at -420 cm-1, whereas no FTIR signal was observed at 420 cm-1 in undoped ZnO. The bond signature at -420 cm-1 might be responsible for the highest PL intensity in NBE and red regions.",

keywords = "annealing, chemical synthesis, coating, thin films, X-ray diffraction",

author = "Firoz Khan and Sadia Ameen and Minwu Song and Mushahid Husain and Abdul Mobin and Shin, \{Hyung Shik\}",

year = "2013",

month = mar,

doi = "10.1007/s12540-013-2019-9",

language = "English",

volume = "19",

pages = "245--250",

journal = "Metals and Materials International",

issn = "1225-9438",

number = "2",

}

TY - JOUR

T1 - Effect of Al concentration on photoluminescence properties of sol-gel derived hydrogen annealed ZnO

AU - Khan, Firoz

AU - Ameen, Sadia

AU - Song, Minwu

AU - Husain, Mushahid

AU - Mobin, Abdul

AU - Shin, Hyung Shik

PY - 2013/3

Y1 - 2013/3

N2 - The effect of the Al/Zn atomic ratio on the photoluminescence properties of hydrogen annealed undoped and Al rich ZnO (AZO) films was studied. The Al/Zn atomic ratios in the AZO films were varied from 0 to 40%. All the AZO films exhibited three peaks in the UV, green and red regions, whereas the undoped ZnO films had two peaks in the UV and green regions. The PL intensity in the UV and red regions increased with an increase in Al concentrations. The highest PL intensity in the UV region was observed in the 20% Al/Zn atomic ratio due to improvement in crystal quality which was also confirmed by XRD measurements. The PL emission in the red region was due to complex luminescent centers like (Vzn-Alzn)-. A blue shift was seen in the red region with the introduction of Al. The 20% AZO films obtained the strongest signal at -420 cm-1, whereas no FTIR signal was observed at 420 cm-1 in undoped ZnO. The bond signature at -420 cm-1 might be responsible for the highest PL intensity in NBE and red regions.

AB - The effect of the Al/Zn atomic ratio on the photoluminescence properties of hydrogen annealed undoped and Al rich ZnO (AZO) films was studied. The Al/Zn atomic ratios in the AZO films were varied from 0 to 40%. All the AZO films exhibited three peaks in the UV, green and red regions, whereas the undoped ZnO films had two peaks in the UV and green regions. The PL intensity in the UV and red regions increased with an increase in Al concentrations. The highest PL intensity in the UV region was observed in the 20% Al/Zn atomic ratio due to improvement in crystal quality which was also confirmed by XRD measurements. The PL emission in the red region was due to complex luminescent centers like (Vzn-Alzn)-. A blue shift was seen in the red region with the introduction of Al. The 20% AZO films obtained the strongest signal at -420 cm-1, whereas no FTIR signal was observed at 420 cm-1 in undoped ZnO. The bond signature at -420 cm-1 might be responsible for the highest PL intensity in NBE and red regions.

KW - annealing

KW - chemical synthesis

KW - coating

KW - thin films

KW - X-ray diffraction

UR - https://www.scopus.com/pages/publications/84879631167

U2 - 10.1007/s12540-013-2019-9

DO - 10.1007/s12540-013-2019-9

M3 - Journal article

AN - SCOPUS:84879631167

SN - 1225-9438

VL - 19

SP - 245

EP - 250

JO - Metals and Materials International

JF - Metals and Materials International

IS - 2

ER -

Effect of Al concentration on photoluminescence properties of sol-gel derived hydrogen annealed ZnO

Abstract

Keywords

Quacquarelli Symonds(QS) Subject Topics

Access to Document

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