Investigation on structure and photoluminescence of ZrO2:Sm3+ produced by RF sputtering deposition
碩士 === 國立成功大學 === 材料科學及工程學系碩博士班 === 97 === There is a global energy shortage problem, so we must try to invent a energy-saving and environment friendly lighting product. LED is a ideal one. White light LED is composed of different color light. The presupposition of high luminescence efficiency is a...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2009
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| Online Access: | http://ndltd.ncl.edu.tw/handle/33734916556974523588 |
| Summary: | 碩士 === 國立成功大學 === 材料科學及工程學系碩博士班 === 97 === There is a global energy shortage problem, so we must try to invent a
energy-saving and environment friendly lighting product. LED is a ideal one.
White light LED is composed of different color light. The presupposition of
high luminescence efficiency is a host with low phonon energy, just like ZrO2.
Sm is a rare-earth element and its emission wavelength range is from yellow
to red light. We’re looking for a great procedure for high efficiency.
According to previous research, we use RF-sputtering because of less process
of RF sputtering.
The best oxygen concentration for experiment was 2%. We used 0.33at%
0.46% 1.48% 2.19% of Sm3+ as model. The highest luminescence efficiency
concentration was 0.33at%.
When the dopant concentration was changed, Monoclinic and Tetragonal
had different effect on 574nm、575nm、622nm. The rest of emission peak
were contributed to Monoclinic.
Key word：RF sputtering、Sm、Monoclinic
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