Bi3+掺杂对YVO4:Yb3+近红外发光的敏化作用

引用本文: 肖全兰, 孟建新, 谢丽娟, 张蕤. Bi³⁺掺杂对YVO₄:Yb³⁺近红外发光的敏化作用[J]. 物理化学学报, 2011, 27(10): 2427-2431. doi: 10.3866/PKU.WHXB20110928 shu

Citation: XIAO Quan-Lan, MENG Jian-Xin, XIE Li-Juan, ZHANG Rui. Near-Infrared Luminescence Enhancement by Co-Doped Bi³⁺ in YVO₄:Yb³⁺[J]. Acta Physico-Chimica Sinica, 2011, 27(10): 2427-2431. doi: 10.3866/PKU.WHXB20110928 shu

Bi³⁺掺杂对YVO₄:Yb³⁺近红外发光的敏化作用

基金项目:
国家自然科学基金(30670523) (30670523)

中央高校基本科研业务费专项资金资助项目

摘要: 用高温固相法合成了Yb³⁺、Bi³⁺共掺的YVO₄, 研究了Bi³⁺的掺入对YVO₄:Yb³⁺发光光谱的影响和近红外发光的敏化作用. X射线衍射图谱研究表明: 掺入Yb³⁺、Bi³⁺之后, 基质YVO₄的晶格结构没有发生明显变化. Bi³⁺的掺入不仅显著增强了样品中Yb³⁺的特征远红外发光强度, 还使YVO₄:Yb³⁺激发光谱的范围红移, 当Bi³⁺掺入的摩尔分数从0增加到0.05时, 样品的最强激发峰位置从335 nm红移至352 nm, 激发光谱范围由300-360 nm扩宽至300-430 nm. 优化的Bi³⁺掺入量为0.03. 初步讨论了VO₄^3-, Bi³⁺和Yb³⁺间的能量传递机理. 结果表明Bi³⁺的共掺使YVO₄:Yb³⁺样品对长波紫外光的响应性能大大改善, 作为一种基于量子剪裁的光谱转换材料, 可以更好地匹配太阳光的能量谱, 有助于提高硅太阳能电池的光电转换效率.

关键词:

English

Near-Infrared Luminescence Enhancement by Co-Doped Bi³⁺ in YVO₄:Yb³⁺

1.
1. Department of Chemistry, Jinan University, Guangzhou 510632, P. R. China;
2. Intitute of Nanochemistry, Jinan Univesity, Guangzhou 510632, P. R. China
Received Date: 15 June 2011
Available Online: 27 September 2011
Fund Project:
国家自然科学基金(30670523)

中央高校基本科研业务费专项资金资助项目

Abstract: The near-infrared (NIR) luminescence phosphor Yb³⁺,Bi³⁺ co-doped YVO₄ was prepared by a conventional solid state method and the sensitization of Yb³⁺ near-infrared luminescence by Bi³⁺ was investigated. By co-doping with Bi³⁺ from 0 to 0.05 the characteristic NIR luminescence of Yb³⁺ in the YVO₄ matrix was greatly enhanced and the strongest site of the excitation wavelength red-shifted from 335 to 352 nm while the wavelength range of the excitation spectrum broadened from 300-360 to 300-430 nm. The optimized Bi³⁺ content is 0.03. The possible energy transfer mechanism among VO₄^3-, Bi³⁺ , and Yb³⁺ was discussed. We conclude that the NIR luminescence of YVO₄:Yb³⁺ can be remarkably improved by co-doping with Bi³⁺ and its absorbance matches better with the solar energy spectrum. YVO₄:Yb³⁺, Bi³⁺ is a promising spectral converter for silicon solar cells and it is expected to improve the photoelectric conversion efficiency.

Key words:

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1.
沈阳化工大学材料科学与工程学院沈阳 110142

Bi³⁺掺杂对YVO₄:Yb³⁺近红外发光的敏化作用

English

Near-Infrared Luminescence Enhancement by Co-Doped Bi³⁺ in YVO₄:Yb³⁺

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