Abstract
The annealing effects on the structural and optical properties of grown ZnO thin films fabricated by pulsed laser deposition were investigated by using different techniques. The XRD reveals the presence of hexagonal wurtzite structure of ZnO with preferred orientation (002). The average grain size (D) of annealed ZnO nanocrystalline thin films is found to be in the range 7.77–15.91 nm. SEM of the thin film consisted of many grains distributed uniformly throughout the surface. TEM shows a relatively smooth surface with an average nanocrystalline size of 13 nm in close agreement with the XRD result. The transmittance spectra demonstrate the highly transparent nature of the films in the visible region (>70 %). The calculation of optical band gap energy (Eg) is found to be in the range 2.95-3.23 eV. The PL spectra show that the amorphous film gives a UV emission only and the annealed nanocrystalline films produce UV, violet, blue and green emissions which indicates that the point defects increased as the amorphous film was annealed. It is concluded that the structural, optical and emission properties of ZnO films grown on glass substrates by PLD strongly depend on the annealing times. The results demonstrate that these annealed films are promising materials for optical component applications.
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References
Kong YC, Yu DP, Zhang B, Feng SQ (2001) Appl Phys Lett 78:407–409
Demian SE (1994) J Mater Sci Mater Electron 5:360–363
Ozgur U, Ya I, Alivov C, Liu A, Teke M A, Reshchikov S, Dogan V, Avrutin S J, Cho H, Morkoc (2005) J Appl Phys 98:041301–103
Zhou J, Xu NS, Wang ZL (2006) Adv Mater 18:2432–2435
Hara K, Horiguchi T, Kinoshita T, Sayama K, Sugihara H, Arakawa H (2000) Sol Energy Mater Sol Cells 64:115–134
Goyal DJ, Agashe C, Takwale M G, Bhide VG, Mahamuni S, Kulkarni SK (1993) J Mater Res 8:1052–1056
Shinde VR, Gujar TP, Lokhanade CD, Mane RS, Han SH (2006) Mater Chem Phys 96:326–330
Juerez AS, Silver AT, Ortiz A (1998) Sol Cells 52:301–311
Bagnall DM, Chen YF, Zhu Z, Yao T, Shen MY, Goto T (1998) Appl Phys Lett 73:1038–1040
Siah F, Yang Z, Tang ZK, Wong GKL, Kawasaki M, Ohtomo A, Koinuma H, Segawa Y (2000) J Appl Phys 88:2480–2483
Varnamkhasti MG, Fallah HR, Zadsar M (2012) Vacuum 86:871875
Mahdhi H, Ben Ayadi Z, Alaya S, Gauffier JL, Djessas K (2014) Superlattice Microst 72:60–71
Su ML, Grote N, Schmitt F (1984) Electron Lett 20:716–717
Pankove I (1971) Optical processes in semiconductors. Prentice-Hall Inc., New Jersey
Wang YG, Lau SP, Lee HW, Yu SF, Tay SK, Zang XZ, Hing HH (2003) J Appl Phys 94:354–358
El-Desoky MM, Ali MA, Afifi G, Imam H J Mater Sci Mater Electron. doi:10.1007/s10854-014-2273-8
Al-Assiri MS, Mostafa MM, Ali MA, El-Desoky MM (2014) Superlattice Microst 75:127–135
Fang GJ, Li D, Yao B-L (2002) Thin Solid Films 418:156162
Gong Y, Andelman T, Neumark GF, Brien SO, Kuskovsky IL (2007) Nanoscale Res Lett 2:297–302
Xiong G, Pal U, Serrano JG (2007) J Appl Physics 101:024317
Opra O, Vasile OR, Voicu G, Andronescu E (2013) Dig J Nanomater Biostructures 8:747–756
Caglar M, Ilican S, Caglar Y, Yakuphanoglu F (2009) Appl Surf Sci 255:4491–4496
Vinodkumar R, Navas I, Porsezian K, Ganesan V, Unnikrishnan NV, Mahadevan Pillai VP (2014) Spectrochim Acta A Mol Biomol Spectrosc 118:724–732
Al-Assiri MS, El-Desoky MM, Alyamani A, Al-Hajry A, Al-Mogeeth A, Bahgat AA (2010) Opt Laser Technol 42: 994–1003
El- Desoky MM (2005) J Non-Cryst Solids 35:139–142
Ozgur U, Alivov Y I, Liu C, Teke A, Reshchikov MA, Dogan S, Avrutin V, Cho JS, Morkoc H (2005) J Appl Phys 98: 04130
Hsu CC, Wu NL (2005) J Photochem Photobiol A Chem 172:269–274
Vanheusden K, Warren WL, Seager CH, Tallant DR, Voigt JA (1996) J Appl Phys 79(10):7983–7990
Fons P, Iwata K, Niki S, Yamada A, Matsuda K (1999) J Cryst Growth 201:627–632
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Al-Assiri, M.S., Mostafa, M.M., Ali, M.A. et al. Optical Properties of Annealed ZnO Thin Films Fabricated by Pulsed Laser Deposition. Silicon 7, 393–400 (2015). https://doi.org/10.1007/s12633-015-9301-z
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DOI: https://doi.org/10.1007/s12633-015-9301-z