TY - JOUR
T1 - Structural, spectroscopic, and electrical studies of spin-coated ZnO-ZTO thin films for their potential application in photocatalysis and optoelectronics
AU - Sharanu,
AU - Kompa, Akshayakumar
AU - Pal, Anand
AU - Rao K, Mohan
N1 - Funding Information:
The authors would like to thank PSG institute of advanced studies for the XRD facility, LRS SAIF IIT Bombay for the Raman facility, and Dr. Sudha Kamath for the P.L. facility (DST-SERB-EMR/2017/001548), and MIT MAHE for other facilities. Sharanu thanks MAHE for providing Dr. T. M. A. Pai fellowship.
Publisher Copyright:
© 2023 Elsevier Ltd and Techna Group S.r.l.
PY - 2023/6/1
Y1 - 2023/6/1
N2 - In this paper, we synthesized and investigated the structural, optical, and electrical properties of spin-coated zinc-tin-oxide thin films with varying molar ratios and total precursor concentrations for photocatalytic applications. The structural studies were carried out using XRD and Raman spectroscopy. XRD and Raman analysis confirms that all the polycrystalline films are composed of ZnO and Zn2SnO4 mixed phases. UV–Vis and fluorescence spectroscopy were used to investigate the optical properties and estimate the band gap of the thin films. Dual absorption edges are observed in the UV–Vis absorption spectra of films prepared with a Zn/Sn = 2 M ratio. Photoluminescence studies confirm the dominated near band edge (NBE) emission for films prepared with a Zn/Sn = 2 M ratio. The electrical resistivity and Hall Effect measurement were carried out on all the studied compositions. The Haacke's figure of merit (FOM) is found to be in the range of 3 × 10−6 to 9 × 10−7 for the studied samples. The as-grown films were subjected to photocatalytic degradation studies using methyl orange (MO) dye under UV light irradiation. We achieved MO degradation efficiency as high as 80% in less than 90 min.
AB - In this paper, we synthesized and investigated the structural, optical, and electrical properties of spin-coated zinc-tin-oxide thin films with varying molar ratios and total precursor concentrations for photocatalytic applications. The structural studies were carried out using XRD and Raman spectroscopy. XRD and Raman analysis confirms that all the polycrystalline films are composed of ZnO and Zn2SnO4 mixed phases. UV–Vis and fluorescence spectroscopy were used to investigate the optical properties and estimate the band gap of the thin films. Dual absorption edges are observed in the UV–Vis absorption spectra of films prepared with a Zn/Sn = 2 M ratio. Photoluminescence studies confirm the dominated near band edge (NBE) emission for films prepared with a Zn/Sn = 2 M ratio. The electrical resistivity and Hall Effect measurement were carried out on all the studied compositions. The Haacke's figure of merit (FOM) is found to be in the range of 3 × 10−6 to 9 × 10−7 for the studied samples. The as-grown films were subjected to photocatalytic degradation studies using methyl orange (MO) dye under UV light irradiation. We achieved MO degradation efficiency as high as 80% in less than 90 min.
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U2 - 10.1016/j.ceramint.2023.02.199
DO - 10.1016/j.ceramint.2023.02.199
M3 - Article
AN - SCOPUS:85149813907
SN - 0272-8842
VL - 49
SP - 18272
EP - 18280
JO - Ceramics International
JF - Ceramics International
IS - 11
ER -