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Photoluminescence Properties of SnO<sub>2</sub> Nanoparticles Synthesized by Sol−Gel Method

Feng GuState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. ChinaShu WangState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. ChinaMeng Kai LüState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. ChinaGuang Jun ZhouState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. ChinaDong XuState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. ChinaDuo Rong YuanState Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, P. R. China

2004en

ABI

Annotatsiya

Nanocrystalline SnO2 particles have been synthesized by a simple sol−gel method. The structural and optical properties of these SnO2 particles are investigated using X-ray powder diffraction, transmission electron microscopy, UV−visible absorption, and photoluminescence spectroscopy. The oxygen-vacancies-related photoluminescence of pure, cerium-, and manganese-doped SnO2 nanoparticles was systematically investigated. The origin of the luminescence is assigned to the recombination of electrons in a conduction band with holes in the center. Experimental results reveal that increasing calcining temperature can decrease the oxygen-vacancies-related luminescence intensity of the sample. After introducing Ce3+/Mn2+ ions into the host, the oxygen-vacancies-related luminescence has been enhanced remarkably resulting from the formation of many more oxygen vacancies. The dependence of the oxygen-vacancies-related luminescence intensity on the Ce3+/Mn2+ concentration is also discussed.

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Identifikatorlar

DOI: 10.1021/jp036741e

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