Synthesis, Photoluminescence and Infrared Emissivity of SnO₂ Nanocrystalline Thin Films

Abstract:

SnO₂ nanocrystalline thin films (NCTFs) with high quality and low infrared emissivity were synthesized through a simple hydrothermal process designed by orthogonal design theory. The microstructure, morphology, photoluminescence (PL) property and the infrared emissivity (IRE) property of as-prepared products were characterized by x-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), fluorescence spectrophotometer, and infrared spectroradio meter (ISM) respectively. The results show that two emission peaks are observed in PL spectra, which can be deconvoluted by Gaussian profile fitting into four emission peaks centered at about 380, 420, 460 and 520 nm respectively. The influences of crystallinity, concentration of particles and resistivity on IRE were systematically investigated, revealing that the better crystallinity, higher particle density and better conductivity are favorable for lowering IRE.

• Periodical: Advanced Materials Research (Volume 1118)
• Pages: 55-61
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.1118.55
• Online since: July 2015
• Authors: Jun Feng Yan*, Feng Jiao Zhang, Xiong Fei Ruan, Man Zhang Xu, Zhi Yong Zhang, Wu Zhao, Jiang Ni Yun
• Keywords: Infrared Emissivity, Nanocrystalline Film, Photoluminescence (PL), SnO₂

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