Effect of SiO2 on Morphology and Luminescence Properties of TiO2 Film Doped with Rare Earth

LI Lian-qiang; LIU Jun-cheng; ZOU Kai-shun; MENG Xiao-qi

doi:10.3788/fgxb20133412.1591

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Effect of SiO₂ on Morphology and Luminescence Properties of TiO₂ Film Doped with Rare Earth

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- Effect of SiO₂ on Morphology and Luminescence Properties of TiO₂ Film Doped with Rare Earth
- Chinese Journal of Luminescence Vol. 34, Issue 12, Pages: 1591-1595(2013)
- 作者机构：
  
  天津工业大学材料科学与工程学院天津,300387
- 作者简介：
- 基金信息：
- DOI：10.3788/fgxb20133412.1591
  CLC： O482.31
- Received：10 July 2013，
  
  Revised：07 September 2013，
  
  Published：10 December 2013
- 稿件说明：
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李连强, 刘俊成, 邹开顺, 孟小琪. 二氧化硅对稀土掺杂二氧化钛薄膜形貌与发光性能的影响[J]. 发光学报, 2013,34(12): 1591-1595

LI Lian-qiang, LIU Jun-cheng, ZOU Kai-shun, MENG Xiao-qi. Effect of SiO2 on Morphology and Luminescence Properties of TiO2 Film Doped with Rare Earth[J]. Chinese Journal of Luminescence, 2013,34(12): 1591-1595
李连强, 刘俊成, 邹开顺, 孟小琪. 二氧化硅对稀土掺杂二氧化钛薄膜形貌与发光性能的影响[J]. 发光学报, 2013,34(12): 1591-1595 DOI： 10.3788/fgxb20133412.1591.

LI Lian-qiang, LIU Jun-cheng, ZOU Kai-shun, MENG Xiao-qi. Effect of SiO2 on Morphology and Luminescence Properties of TiO2 Film Doped with Rare Earth[J]. Chinese Journal of Luminescence, 2013,34(12): 1591-1595 DOI： 10.3788/fgxb20133412.1591.

摘要

为提高稀土掺杂TiO

薄膜的上转换效率，采用溶胶-凝胶法和旋涂镀膜工艺制备了Yb

-Er

共掺杂SiO

/TiO

上转换光致发光薄膜，研究了SiO

对TiO

薄膜形貌以及发光性能的影响。利用FE-SEM观察了薄膜的表面形貌，利用分光光度计测试了薄膜在近红外光区域的透射率的变化，并用荧光光谱仪测试了薄膜的上转换发光光谱。结果表明：SiO

的掺杂导致TiO

颗粒尺寸显著减小，TiO

薄膜在近红外的透射率也有所下降。在980 nm红外光激发下，SiO

/TiO

薄膜在630~670 nm处获得了明显的上转换红光发射，在516~537 nm和537~570 nm处获得了较弱的上转换绿光发射。由上转换发光强度与激光泵浦功率的关系推知，绿色和红色上转换发光均为双光子吸收发射过程。

Abstract

In order to improve the up-conversion efficiency of Yb

-Er

co-doped TiO

film

SiO

was doped into the film which deposited on the glass substrate by sol-gel method and spin-coating technique. The effect of SiO

on the film's morphology and optical properties was researched. The morphology

near-infrared transmittance

and photoluminescence (PL) spectra of the film were tested and analyzed. The results show that the particle size of TiO

decreases with the introduction of SiO

but the property of near-infrared light transmittance decreases nearly keep steady. The film emits red light at 630~670 nm

weak green light at 516~537 nm and 537~570 nm under 980 nm excitation. In additional

the intensity of the up-conversion luminescence tends to be saturated with pump power increasing.

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Keywords

references

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