Citation: OUYANG Jing, SONG Xing-Lin, LIN Ming-Yue, ZOU Ju, LI Jing-Jing, ZHU Jiang-Ping, YANG Hua-Ming. Effect of Oxygen Vacancy on the Optical Properties of Porous Zirconia[J]. Acta Physico-Chimica Sinica, ;2011, 27(12): 2900-2906. doi: 10.3866/PKU.WHXB20112900
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The effect of oxygen vacancy on the optical properties of porous zirconia (ZrO2) was discussed based on the preparation and optical characterization of this material. The configuration coordinate diagram for a discussion of the optical performances of the ZrO2 system was carefully amended. The samples used in the experiments were prepared by the hydrothermal method. The product possesses a porous structure constructed by amorphous zirconia particles and the specific surface area of the product was 151.9 m2·g-1. Deconvolution was used to analyze the photoluminescence (PL) spectra and the results are different in some aspects compared with previous reports. The main PL bands of the as-prepared product were located in the violet to blue region while those of the samples after treatment by H3PO4 red-shifted to the blue-green region. Neither the porous structure nor the existence of phosphor reagents in ZrO2 induced any new PL peaks. The oxygen vacancies in the samples formed a new energy level that trapped electrons to form a color center and then luminescent emissions were induced.
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