Structural and optical properties of ZnO: K synthesized by sol-gel auto-combustion route

Journal Article · Wed Jun 24 00:00:00 EDT 2015 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4918111· OSTI ID:22490529

Sankar, S.; Subhashree, G.; Bharathi, R. Niruban ^[1]

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1. Condensed Matter Laboratory, Department of Physics, Madras Institute of Technology, Anna University, Chrompet, Chennai-600044 (India)

The structural and optical behavior of ZnO and ZnO doped with K synthesized by solution combustion route is reported in this article. The XRD patterns confirm the substitution of K atoms into ZnO lattice. There are no secondary peaks observed in the XRD patterns. The band gap of the K doped samples show a red shift on comparison with the bandgap of ZnO. The photoluminescence spectral study discloses the quenching behavior of UV emission and the aggrandizing blue emission when K content increases. The rich presence of defects is confirmed from the optical analysis and a practical mechanism, involving Zn{sub i} for the origin of the blue emission in ZnO is discussed here.

• OSTI ID: 22490529
• Journal Information: AIP Conference Proceedings, Vol. 1665, Issue 1; Conference: 59. DAE solid state physics symposium 2014, Tamilnadu (India), 16-20 Dec 2014; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMS
COMPARATIVE EVALUATIONS
DOPED MATERIALS
EMISSION SPECTRA
EMISSION SPECTROSCOPY
ENERGY GAP
OPTICAL PROPERTIES
PHOTOLUMINESCENCE
POTASSIUM
QUENCHING
RED SHIFT
SOL-GEL PROCESS
ULTRAVIOLET RADIATION
ULTRAVIOLET SPECTRA
X-RAY DIFFRACTION
ZINC OXIDES