Characteristics of SnO2 annealed in reducing atmosphere

• Published in: Ceramics international Vol. 31; no. 3; pp. 405 - 410
• Main Authors: CHANG, Sung-Sik, YOON, S. O, HYE JEONG PARK
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Science 2005
• Subjects: Applied sciences; Building materials. Ceramics. Glasses; Ceramic industries; Chemical industry and chemicals; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Electrotechnical and electronic ceramics; Exact sciences and technology; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Other solid inorganic materials; Photoluminescence; Physics; Technical ceramics; Fourier transformation; Hydrogen; Photoluminescence; Differential thermal analysis; Reducting atmosphere; Nitrogen; Experimental study; Controlled atmosphere; X ray diffraction; Oxide ceramics; Binary mixture; Tin oxide; Sintering; Optical properties; Manufacturing; Infrared spectrum; Thermal annealing; Electroceramics
• ISSN: 0272-8842; 1873-3956
• DOI: 10.1016/j.ceramint.2004.05.026

The characteristics of SnO2 reduced in H2/N2 at various annealing temperatures are reported. The formation of polycrystalline metallic Sn from SnO2 is detected by XRD above the annealing temperature of 500 C. The photoluminescence (PL) characteristics of reduced SnO2 was studied as a function of temperature. Further studies of FTIR, DTA-TG, and photoluminescence excitation (PLE) spectroscopy were performed. Broad emission with peaks at around 590 nm (2.1 eV) and 420 nm is obtained from SnO2. The reduced SnO2 shows an increase PL intensity of 420 nm band. In addition the PL intensity of reduced SnO2 at 420 nm (2.95 eV) increases with annealing in ambient air. The origin of luminescence bands detected in reduced tin oxide is discussed. 15 refs.