TY - JOUR
T1 - Microstructural, linear and nonlinear optical study of spray pyrolysed nanostructured La–ZnO thin film
T2 - An effect of deposition temperature
AU - Ayana, A.
AU - Patil, Parutagouda Shankaragouda
AU - Gummagol, Neelamma B.
AU - Goutam, U. K.
AU - Sharma, Pankaj
AU - Rajendra, B. V.
N1 - Funding Information:
The authors are grateful to acknowledge the financial support of UNSW-MAHE collaboration seed grant ( RG194284-D ). Ayana A would like to thank the Manipal Academy of Higher Education (MAHE) for giving a research fellowship. Authors express their gratitude to UGC-DAE-CSR consortium, Mumbai , for financial support [ UDCSR/MUM/AO/CRS-M-315/2020/813 ]. Author thankful to RRCAT Indore for providing XPS measurements. The authors thank Dr. Sudha D Kamath for providing the photoluminescence facilities. Dr. P. S. Patil is grateful to Science and Engineering Research Board ( SERB ), Government of India, for the core research grant ( EMR/2017/003632 ) .
Publisher Copyright:
© 2021 Elsevier B.V.
PY - 2021/12
Y1 - 2021/12
N2 - Transparent Zn0.97La0.03O nanostructures were prepared at different temperatures (300 °C–500 °C) on borosilicate glass substrates using the chemical spray method. The present work focused on the dependence of the substrate temperature (Ts) on the different characteristics of the prepared films. In all the deposits, a polycrystalline structure of La3+ doped ZnO (LZO) film with a preferred orientation along the (101) plane was observed, and a larger crystalline size was noticed for films deposited at lower temperatures. The surface morphology changed from spherical to fibrous structure as a function of the temperature of the substrate. The chemical state and elemental compositions were confirmed by XPS analysis. The linear optical band gap and third-order nonlinear absorption coefficient of LZO films were observed to increase with an increase in substrate temperature. A maximum transmittance was observed for the sample prepared at 450 °C with the least optical limiting threshold value of 0.96 kJ/cm2. The presence of various defects in the film was confirmed through photoluminescence emission, and red emission was noticed for samples prepared at 450 °C and 500 °C.
AB - Transparent Zn0.97La0.03O nanostructures were prepared at different temperatures (300 °C–500 °C) on borosilicate glass substrates using the chemical spray method. The present work focused on the dependence of the substrate temperature (Ts) on the different characteristics of the prepared films. In all the deposits, a polycrystalline structure of La3+ doped ZnO (LZO) film with a preferred orientation along the (101) plane was observed, and a larger crystalline size was noticed for films deposited at lower temperatures. The surface morphology changed from spherical to fibrous structure as a function of the temperature of the substrate. The chemical state and elemental compositions were confirmed by XPS analysis. The linear optical band gap and third-order nonlinear absorption coefficient of LZO films were observed to increase with an increase in substrate temperature. A maximum transmittance was observed for the sample prepared at 450 °C with the least optical limiting threshold value of 0.96 kJ/cm2. The presence of various defects in the film was confirmed through photoluminescence emission, and red emission was noticed for samples prepared at 450 °C and 500 °C.
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U2 - 10.1016/j.optmat.2021.111742
DO - 10.1016/j.optmat.2021.111742
M3 - Article
AN - SCOPUS:85118577616
SN - 0925-3467
VL - 122
JO - Optical Materials
JF - Optical Materials
M1 - 111742
ER -