Physical properties evaluation of nebulized spray pyrolysis prepared Nd doped ZnO thin films for opto-electronic applications
- 39 Downloads
Thin films of neodymium (Nd) doped zinc oxide (NZO) were coated onto glass substrates at 400 °C by nebulized spray pyrolysis using different doping weight percentage (wt%) of Nd. The prepared films were exhibited in hexagonal structure of polycrystalline nature along with (002) preferential orientation. Morphological properties and elemental compositions were performed by scanning electron microscopy and energy dispersive by X-ray, respectively. Tauc’s plot discovered the optical energy band gap of 3.17 eV for 5 wt% Nd doped NZO film. PL profiles depicted a solid green emission peak at around 680 nm at room temperature. Optical constants such as refractive indices, dielectric constants, carrier concentration and plasma frequency were evaluated for NZO through optical approximation route. Hall mobility and carrier concentrations were enhanced with rise of Nd doping wt%. A drastic change in the resistivity was observed due to incorporation of Nd dopant and it has evidently demonstrated in detail.
The authors extend their appreciation to the Deanship of Scientific Research at King Khalid University for funding this work through General Research Project under grant number (R.G.P.1/45/39). Also, this work was partly supported by the Ministry of Trade, Industry and Energy (MOTIE, Korea) under Sensor Industrial Technology Innovation Program (No. 10063682), and the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2017R1D1A1A09000823).
- 6.S. Thiagarajan, A. Sanmugam, D. Vikraman, in Facile methodology of sol-gel synthesis for metal oxide nanostructures, ed. by Chandra U. Recent Applications in Sol-Gel Synthesis (InTech, Rijeka, 2017) pp 1–16Google Scholar
- 14.X. Liang, Y. Ren, S. Bai, N. Zhang, X. Dai, X. Wang, H. He, C. Jin, Z. Ye, Q. Chen, L. Chen, J. Wang, Y. Jin, Colloidal indium-doped zinc oxide nanocrystals with tunable work function: rational synthesis and optoelectronic applications. Chem. Mater. 26(17), 5169–5178 (2014). https://doi.org/10.1021/cm502812c CrossRefGoogle Scholar
- 22.A. Douayar, P. Prieto, G. Schmerber, K. Nouneh, R. Diaz, I. Chaki, S. Colis, A. El Fakir, N. Hassanain, A. Belayachi, Investigation of the structural, optical and electrical properties of Nd-doped ZnO thin films deposited by spray pyrolysis. Eur. Phys. J. Appl. Phys. 61(1), 10304 (2013)CrossRefGoogle Scholar
- 29.T. Mahalingam, V. Dhanasekaran, G. Ravi, S. Lee, J. Chu, H.-J. LIW, Effect of deposition potential on the physical properties of electrodeposited CuO thin films. J. Optoelectron Adv. M 12(6), 1327–1332 (2010)Google Scholar
- 36.K. Ravichandran, R. Mohan, N.J. Begum, S. Snega, K. Swaminathan, C. Ravidhas, B. Sakthivel, S. Varadharajaperumal, Impact of spray flux density and vacuum annealing on the transparent conducting properties of doubly doped (Sn + F) zinc oxide films deposited using a simplified spray technique. Vacuum 107, 68–76 (2014)CrossRefGoogle Scholar
- 37.J. Tauc, Amorphous and Liquid Semiconductors. (Springer Science & Business Media, Berlin, 2012)Google Scholar
- 42.E. Márquez, A.M. Bernal-Oliva, J.M. González-Leal, R. Prieto-Alcón, A. Ledesma, R. Jiménez-Garay, I. Mártil, Optical-constant calculation of non-uniform thickness thin films of the Ge10As15Se75 chalcogenide glassy alloy in the sub-band-gap region (0.1–1.8 eV). Mater. Chem. Phys. 60(3), 231–239 (1999)CrossRefGoogle Scholar
- 45.Res IAE, Res. J. Recent Sci. 1, 46 (2012)Google Scholar