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Photoluminescence Charateristics of SrTiO3:Pr3+,Ga3+ Single Crystal

Published online by Cambridge University Press:  14 March 2011

Jaedong Byun ,
Yongjei Lee ,
Boyun Jang ,
Youngmoon Yu ,
Sunyoun Ryou  and
Kyungsoo Suh
Jaedong Byun
Affiliation:
Electronics and Telecommunications Research Institute, Taejon 305-350, Korea
Yongjei Lee
Affiliation:
Electronics and Telecommunications Research Institute, Taejon 305-350, Korea
Boyun Jang
Affiliation:
Dept. of Materials Science, Korea University, Seoul 136-701, Korea
Youngmoon Yu
Affiliation:
Korea Research Institute of Chemical Technology, Taejon 305-343, Korea
Sunyoun Ryou
Affiliation:
Dept. of Materials Sci. & Engr., Sun Moon University, Choongnam 336-840, Korea
Kyungsoo Suh
Affiliation:
Electronics and Telecommunications Research Institute, Taejon 305-350, Korea
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Abstract

SrTiO3 crystals containing varying concentrations of Pr and Ga were grown by a standard floating zone method and their photoluminescence characteristics were investigated. It was found that only a small fraction of Pr ions added are incorporated in the lattice. When the Ga ions are co-doped, the solubility of Pr ions is increased considerably. Comparing the ionic sizes of the host and dopants, it seems that the increase of solubility of Pr by Ga co-doping is due to charge compensation achieved by the additional Ga3+. The addition of Ga in Pr - activated SrTiO3 resulted also in a considerable enhancement of Pr3+ emission band at 615 nm. This result is attributed to the hole trapping effect of Ga3+ ions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 621: Symposia Q/R – Electron-Emissive Materials, Vacuum Microelectronics… , 2000 , Q4.6.1
Copyright
Copyright © Materials Research Society 2000

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References

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