Effects of Precipitation Microstructure on Spectral Properties of Green-emitting CaO-SiO2 Glass-ceramic Phosphors

TIAN Hua; WANG Da-jian; LIU Ji-Wen

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Effects of Precipitation Microstructure on Spectral Properties of Green-emitting CaO-SiO₂ Glass-ceramic Phosphors

paper | 更新时间：2020-08-12

- Effects of Precipitation Microstructure on Spectral Properties of Green-emitting CaO-SiO₂ Glass-ceramic Phosphors
- Chinese Journal of Luminescence Vol. 32, Issue 12, Pages: 1251-1256(2011)
- 作者机构：
  
  1. 天津大学材料科学与工程学院天津,300072
  2. 天津理工大学材料科学与工程学院天津,300384
  3. 天津市光电显示材料与光电器件重点实验室天津,300384
- 作者简介：
- 基金信息：
- DOI：
  CLC： O482.31
- Received：14 September 2011，
  
  Revised：19 October 2011，
  
  Published Online：22 December 2011，
  
  Published：22 December 2011
- 稿件说明：
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田华, 王达健, 刘技文. CaO-SiO2绿光玻璃陶瓷荧光体的沉积组织结构对发光性质的影响[J]. 发光学报, 2011,32(12): 1251-1256

TIAN Hua, WANG Da-jian, LIU Ji-Wen. Effects of Precipitation Microstructure on Spectral Properties of Green-emitting CaO-SiO2 Glass-ceramic Phosphors[J]. Chinese Journal of Luminescence, 2011,32(12): 1251-1256
田华, 王达健, 刘技文. CaO-SiO2绿光玻璃陶瓷荧光体的沉积组织结构对发光性质的影响[J]. 发光学报, 2011,32(12): 1251-1256 DOI：

TIAN Hua, WANG Da-jian, LIU Ji-Wen. Effects of Precipitation Microstructure on Spectral Properties of Green-emitting CaO-SiO2 Glass-ceramic Phosphors[J]. Chinese Journal of Luminescence, 2011,32(12): 1251-1256 DOI：

摘要

采用半熔化-淬冷的一步法制备了一种新型的硅酸钙绿光玻璃陶瓷

通过变化在1 550 ℃的保温时间

研究了玻璃陶瓷中沉积的微观结构对发光性质的影响。延长保温时间

玻璃陶瓷中沉积的发光晶体-Ca

SiO

∶Eu

和发光玻璃相的比例趋于减少

导致样品发射光谱红移

透明度增加。本论文同时分析了SiO

晶粒在玻璃基体中的沉积现象。绿光玻璃陶瓷可以被近紫外到蓝紫光有效激发

在转光型高功率LED中具有潜在的应用前景。

Abstract

Calcium silicate glass-ceramic phosphor with green emission was evaluated.The effect of crystals precipitation microstructure on spectral properties was investigated by changing the holding time at melting temperature. With the in crease of holding duration

the amount ratio of luminous -Ca

SiO

∶Eu

crystalline phase to glassy phase tended to be decreased

leading to a red-shift of the emission band and exhibiting more transparent of the glass-ceramic phosphor. The precipitation of SiO

crystals in priority was proposed. The broad excitation band of the green-emitting glass-ceramic phosphors covers the wavelength from 270 to 440 nm

showing the potential for the high-power phosphor-converted LED.

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references

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