Bi3+掺杂对YVO4:Yb3+近红外发光的敏化作用

doi:10.3866/PKU.WHXB20110928

物理化学学报 >> 2011, Vol. 27 >> Issue (10): 2427-2431.doi: 10.3866/PKU.WHXB20110928

Bi³⁺掺杂对YVO₄:Yb³⁺近红外发光的敏化作用

肖全兰¹, 孟建新^1,2, 谢丽娟¹, 张蕤¹

1. 暨南大学化学系, 广州 510632;
2. 暨南大学纳米化学研究所, 广州 510632

收稿日期:2011-06-15 修回日期:2011-07-04 发布日期:2011-09-27
通讯作者: 孟建新 E-mail:tmjx@jnu.edu.cn
基金资助:
国家自然科学基金(30670523)和中央高校基本科研业务费专项资金资助项目

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

XIAO Quan-Lan¹, MENG Jian-Xin^1,2, XIE Li-Juan¹, ZHANG Rui¹

1. Department of Chemistry, Jinan University, Guangzhou 510632, P. R. China;
2. Intitute of Nanochemistry, Jinan Univesity, Guangzhou 510632, P. R. China

Received:2011-06-15 Revised:2011-07-04 Published:2011-09-27
Contact: MENG Jian-Xin E-mail:tmjx@jnu.edu.cn
Supported by:
The project was supported by the National Natural Science Foundation of China (30670523) and Central University by Basic Scientific Research Business Expenses, China.

摘要/Abstract

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: 近红外发光, 固相法, 能量下转换, YVO₄：Yb³⁺,Bi³⁺

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: Near-infrared luminescence, Solid state reaction, Energy down-conversion, YVO₄：Yb³⁺,Bi³⁺

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

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

链接本文: https://www.whxb.pku.edu.cn/CN/10.3866/PKU.WHXB20110928

https://www.whxb.pku.edu.cn/CN/Y2011/V27/I10/2427

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Bi³⁺掺杂对YVO₄:Yb³⁺近红外发光的敏化作用

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

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