Chem. J. Chinese Universities ›› 2016, Vol. 37 ›› Issue (5): 810.doi: 10.7503/cjcu20160006

• Articles: Inorganic Chemistry • Previous Articles     Next Articles

Synthesis and Photoluminescence Properties of β-Ga2O3∶Cr3+ Persistent Luminescence Nanoparticles with Near-infrared Afterglow

ABDUKAYUM Abdukader*(), ABDURAHMAN Renagul, TUERDI Ailijiang, MAMATIMIN Adil   

  1. Xinjiang Laboratory of Native Medicinal and Edible Plant Resources Chemistry, College of Chemistry and Environmental Science, Kashgar University, Kashgar 844007, China
  • Received:2016-01-05 Online:2016-05-10 Published:2016-04-22
  • Contact: ABDUKAYUM Abdukader E-mail:abdukadera@sina.com
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.21565017), the Scientific Research Program of the Higher Education Institution of Xinjiang, China(No;XJEDU2014I038) and the Research Foundation of Kashgar University, China(No.14-2500)

Abstract:

Cr3+ doped gallium oxide(β-Ga2O3∶Cr3+) nanoparticles with near infrared(NIR) persistent luminescence properties were prepared by a facile precipitation method with triethylene glycol as a surface ligand. The persistent luminescence properties and crystal structure of the Ga2O3∶Cr3+ nanoparticles highly depended on pH value of the reaction solution and the sintering temperature. The experimental results showed that pure β-Ga2O3∶Cr3+ nanocrystal with small grain size(ca. 30 nm) was obtained after pH value of the reaction solution was adjusted to 7 with ammonium hydroxide, and calcined in air at 700 ℃ for 3 h. The maximum afterglow emission wavelength of the β-Ga2O3∶Cr3+ nanoparticles was 750 nm, which was controlled by the reaction conditions. The NIR afterglow time of the β-Ga2O3∶Cr3+ nanoparticles was estimated to be longer than 384 h. The β-Ga2O3∶Cr3+ persistent luminescence nanoparticles with small size, long NIR afterglow time and controllable emission band have great potential application in low background noise and deep tissue in-vivo imaging.

Key words: Gallium oxide, Nanoparticles, Persistent luminescence, Near-infrared afterglow, Optical imaging

CLC Number: 

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