Dependence of luminescence efficiency on dopant concentration and sintering temperature in the erbium-doped Ba 0.7Sr 0.3TiO 3 thin films

Shou Yi Kuo*, Chin Sheng Chen, Tseung-Yuen Tseng, S. C. Chang, Wen Feng Hsieh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Scopus citations

Abstract

We found the dependence of luminescence efficiency on Er 3+ concentration and sintering temperature in the Er-doped Ba 0.7Sr 0.3TiO 3 (BST) thin films is governed by crystallinity and ion-ion interaction. X-ray diffraction and Raman studies of the sol-gel prepared samples show that the BST polycrystalline phase occurred when the sintering temperature reaches 700°C, whereas, it becomes worse for temperature above 700°C resulting from phase separation and the Er 3+ concentration exceeding 3 mol% due to charge compensation mechanism. The observed green emission reaches maximum at sintering temperature 700°C and 3 mol% Er 3+ ions concentration. We also showed the Er dopant does not affect the dielectric property of BST thin films in C-V measurement and the Ba 0.7Sr 0.3TiO 3 films doped with Er 3+ ions may have potential use for electroluminescence devices.

Original languageEnglish
Pages (from-to)1868-1872
Number of pages5
JournalJournal of Applied Physics
Volume92
Issue number4
DOIs
StatePublished - 15 Aug 2002

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