Preparation and upconversion luminescence of YAG(Y3Al5O12): Yb3+, Ho3+ nanocrystals

稀土学报(英文版), 2009, 27(1): 66-70. doi: 10.1016/S1002-0721(08)60193-3

^1, , ^2, , ^3, , ^4, , ^5,

1.Structural Ceramics Engineering Research Center, Energy Materials Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;School of Electrical & Engineering Nanyang Technological University Singapore 639798;Energy Materials Research Center Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China;Science of Materials Science and E

2.Structural Ceramics Engineering Research Center, Energy Materials Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

3.School of Electrical & Engineering Nanyang Technological University Singapore 639798

4.Energy Materials Research Center Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China

5.Science of Materials Science and Engineering,Nanyang Technological University,Singapore 639798

基金项目: Singapore A*Star SERC(052 101 0039) Shanghai Light-Tech Project(036105021) 国家自然科学基金(50372075)

Preparation and upconversion luminescence of YAG(Y3Al5O12): Yb3+, Ho3+ nanocrystals

LIU Min ^1, , WANG Shiwei ^2, , TANG Dingyuan ^3, , CHEN Lidong ^4, , MA Jian ^5,

1.Structural Ceramics Engineering Research Center, Energy Materials Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China;School of Electrical & Engineering Nanyang Technological University Singapore 639798;Energy Materials Research Center Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China;Science of Materials Science and E

2.Structural Ceramics Engineering Research Center, Energy Materials Research Center, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China

3.School of Electrical & Engineering Nanyang Technological University Singapore 639798

4.Energy Materials Research Center Shanghai Institute of Ceramics Chinese Academy of Sciences Shanghai 200050 China

5.Science of Materials Science and Engineering,Nanyang Technological University,Singapore 639798

Keywords： chemical synthesis

Cubic YAG: Yb3+, Ho3+ pure phase nanocrystals were synthesized by using coprecipition nitrate and ammonium hydrogen carbonate as raw materials. After calcining the precipitates at 800 ℃, the resultant YAG: Yb3+, Ho3+ nanocrystals were nearly spheric and the particle size was about 40 nm. Intense upconversion spectra were observed on the powder compact pumped by a 980 nm continuous wave diode laser, and green emission centered at 549 nm, red emission centered at 667 nm, and NIR centered at 760 nm were all due to two photons process, which originated from 5S2 (5F4)→5I8, 5F5→5I8, and 5S2 (5F4)→5I7 transitions, respectively.

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