Structural,Transport and Optical Properties of Boron-doped Zinc Oxide Nanocrystalline

• Published in: Journal of materials science & technology Vol. 27; no. 6; pp. 481 - 488
• Main Authors: Kumar, Vinod, Singh, R.G., Purohit, L.P., Mehra, R.M.
• Format: Journal Article
• Language: English
• Published: Elsevier Ltd 2011
• Subjects: B-M shift; Boron; Clusters; Doped films; Intragrain; Optical properties; Photoluminescence; Scattering; Spectra; Spin coating; Transport; Zinc oxide; 光学性质; 散射机制; 氧化锌; 浓度增加; 硼掺杂; 纳米结构; 薄膜生长; 运输; Zinc oxide; Boron; Intragrain; B-M shift; Photoluminescence
• ISSN: 1005-0302; 1941-1162
• DOI: 10.1016/s1005-0302(11)60095-9

The paper has reported the structural,transport and optical properties of boron doped zinc oxide（ZnO：B） thin films grown on glass substrate by sol-gel spin coating process.It is observed from the analysis of the X-ray diffraction（XRD） results that the crystalline quality of the films is improved with increasing B concentration.A crystallite size of ～17 nm is obtained for B doped films.A minimum resistivity of 7.9×10-4 Ω.cm is obtained at 0.6 at.% of B concentration in the ZnO：B films.Ionized and intragrain cluster scattering are found to dominate the scattering mechanism in ZnO：B films.Optical interference pattern in transmittance spectra shows good homogeneity with a transparency of ～88% in the visible region.The band gap of the films is increased from 3.24 to 3.35 eV with increasing B concentration.Band gap widening is analyzed in terms of Burstein-Moss shift.The origin of the broad band photoluminescence（PL） spectra is explained in terms of the intragrain cluster scattering.