Laser induced photoconductivity in sol–gel derived Al doped ZnO thin films
Source abstract
Abstract
Abstract In this paper Al doped ZnO (AZO) thin films with 0, 3, 6 and 12 at. % Al concentration were prepared by sol–gel method on glass substrates. The deposited films were annealed at different temperatures of 300, 350, 400, 450 and 500 °C for 1 h in air. X-ray diffraction (XRD) showed wurtzite crystalline structure for the films annealed above 400 °C. The films were subsequently irradiated by beams of excimer (KrF, λ = 248 nm) laser. The evolution of crystal structure, surface morphology and optical properties were studied using XRD, filed emission scanning electron microscope (FE-SEM) and UV–Vis spectrophotometer, respectively. Real-time measurement of electrical conductivity during laser irradiation showed a transient or persistent photoconductivity effect. The effect of laser energy on this photoconductivity was also investigated. Based on the observed photoluminescence (PL) and X-ray photoelectron spectroscopy (XPS), the observed photoconductivity effect was described.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: ZnO doping and properties · Electronic and Structural Properties of Oxides · Ga2O3 and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (44)
Show source-provided references
1. ZnO: from basics towards applications10.1002/pssb.200743072 ↗
2. Electrical characterization of Au/n-ZnO Schottky contacts on n-Si10.1016/j.jallcom.2008.09.131 ↗
3. Optoelectronic characteristics of UV photodetector based on ZnO nanowire thin films10.1016/j.jallcom.2009.01.026 ↗
4. Effects of post-thermal annealing on the optical constants of ZnO thin film10.1016/j.jallcom.2006.10.076 ↗
5. CBD grown ZnO-based gas sensors and dye-sensitized solar cells10.1016/j.jallcom.2008.07.025 ↗
6. ZnO nanostructures for optoelectronics: material properties and device applications10.1016/j.pquantelec.2010.04.001 ↗
7. Fundamentals of zinc oxide as a semiconductor10.1088/0034-4885/72/12/126501 ↗
8. Synthesis of nanocrystalline ZnO powder via sol–gel route for dye-sensitized solar cells10.1016/j.solmat.2008.07.015 ↗
9. The properties of Al doped ZnO thin films deposited on various substrate materials by RF magnetron sputtering10.1007/s10854-012-0632-x ↗
10. Optical properties and crystallinity of ZnO thin films grown on porous silicon by using plasma-assisted molecular beam epitaxy10.3938/jkps.60.1949 ↗
11. Structural and functional properties of Al:ZnO thin films grown by pulsed laser deposition at room temperature10.1016/j.tsf.2011.10.072 ↗
12. ZnO thin films preparation by spray pyrolysis and electrical characterization10.1016/j.matlet.2011.11.004 ↗
13. ZnO thin films synthesized by sol-gel process for photonic applications10.12693/APhysPolA.121.165 ↗
14. Relationship between ultraviolet emission and electron concentration of ZnO thin films10.1016/j.tsf.2007.08.084 ↗
15. Effect of KrF excimer laser irradiation on the properties of ZnO thin films10.1063/1.2931005 ↗
16. Preparation of aluminum doped zinc oxide films and the study of their microstructure, electrical and optical properties10.1016/j.tsf.2007.01.041 ↗
17. Fabrication of ZnO crystals by UV-laser annealing on ZnO nanoparticles prepared by laser ablation method
18. Excimer laser sintering of indium tin oxide nanoparticles for fabricating thin films of variable thickness on flexible substrates10.1016/j.tsf.2015.02.015 ↗
19. Laser treatment of Ag@ZnO nanorods as long-life-span SERS surfaces10.1021/am506622x ↗
20. Structural and optical studies on sol–gel derived ZnO thin films by excimer laser annealing10.1016/j.ceramint.2012.06.050 ↗
21. Transparent conducting aluminum-doped zinc oxide thin film prepared by sol–gel process followed by laser irradiation treatment10.1016/j.tsf.2008.08.157 ↗
22. Effect of excimer laser annealing on the properties of ZnO thin film prepared by sol-gel method10.1016/j.cap.2011.09.006 ↗
23. Excimer laser processing of ZnO thin films prepared by the sol–gel process10.1016/j.apsusc.2007.08.072 ↗
24. Real-time measurement of oxidation dynamics of sub-stoichiometric tungsten oxide films by pulsed laser deposition10.1007/s00339-008-4593-0 ↗
25. Effects of annealing temperature on ZnO and AZO films prepared by sol-gel technique10.1016/j.apsusc.2012.05.156 ↗
26. Effect of annealing temperature on the structural and optical properties of ZnO thin films prepared by sol-gel method10.1007/s11581-010-0468-4 ↗
27. Effect of annealing temperature on the characteristics of ZnO thin films10.1016/j.jpcs.2012.06.007 ↗
28. Influence of doping concentrations on the aluminum doped zinc oxide thin films properties for ultraviolet photoconductive sensor applications10.1016/j.optmat.2009.12.005 ↗
29. The Al-doping contents dependence of the crystal growth and energy band structure in Al:ZnO thin films10.1016/j.jcrysgro.2009.02.039 ↗
30. Transparent conducting ZnO: Al, In and Sn thin films deposited by the sol–gel method10.1016/S0040-6090(03)00014-2 ↗
31. Optical properties and electronic structure of amorphous germanium10.1002/pssb.19660150224 ↗
32. Influence of annealing temperature on the structural, topographical and optical properties of sol–gel derived ZnO thin films10.1016/j.matlet.2011.06.021 ↗
33. Influence of annealing temperature on the properties of ZnO thin films deposited by thermal evaporation10.1016/j.apsusc.2005.12.134 ↗
34. Optical, electrical and structural characterization of ZnO: Al thin films prepared by a low cost sol–gel method10.1016/j.ssc.2011.10.040 ↗
35. Aluminium doped ZnO films: electrical, optical and photoresponse studies10.1088/0022-3727/40/22/008 ↗
36. Dependence of structural and optical properties of sol–gel derived ZnO thin films on sol concentration10.1016/j.apsusc.2012.04.137 ↗
37. ZnO thin films prepared by a single step sol–gel process10.1016/j.tsf.2007.03.160 ↗
38. Luminescence characteristics of zinc oxide nanocrystals deposited on glass via a solution method10.1016/j.physe.2008.09.007 ↗
39. Photoluminescence studies of ZnO thin films on R-plane sapphire substrates grown by sol–gel method10.1016/j.jlumin.2012.05.010 ↗
40. Effect of preheating temperature on structural and optical properties of ZnO thin films by sol–gel process10.1016/j.tsf.2005.06.013 ↗
41. Fabrication methods and luminescent properties of ZnO materials for light-emitting diodes10.3390/ma3042218 ↗
42. Violet luminescence emitted from Ag-nanocluster doped ZnO thin films grown on fused quartz substrates by pulsed laser deposition10.1016/j.physb.2005.11.116 ↗
43. Effects of oxygen pressure on the growth of pulsed laser deposited ZnO films on Si(0 0 1)10.1016/j.tsf.2003.09.057 ↗
44. Luminescence mechanism of ZnO thin film investigated by XPS measurement10.1007/s00339-007-4275-3 ↗