Exploration of bluish violet-emitting phosphor Ca3Al4ZnO10:Ti4+ with enhanced emission by Ca2+ vacancies

被引：11

作者：

Zhou, Zhi ^{[1
]}

Zhong, Yuan ^{[1
]}

Gu, Simin ^{[1
]}

Su, Yifeng ^{[1
]}

Xia, Mao ^{[1
,2
]}

Zhang, Yongli ^{[1
]}

Zhou, Nan ^{[1
]}

Wang, Jing ^{[1
,3
]}

机构：

[1] Hunan Agr Univ, Coll Sci, Changsha, Hunan, Peoples R China

[2] Cent S Univ, State Key Lab Powder Met, Changsha, Hunan, Peoples R China

[3] Sun Yat Sen Univ, Sch Chem, Sch Mat Sci & Engn, Guangzhou, Guangdong, Peoples R China

来源：

JOURNAL OF THE AMERICAN CERAMIC SOCIETY | 2019年 / 102卷 / 04期

基金：

中国国家自然科学基金;

关键词：

luminescence; phosphors; photoluminescence; PHOTOLUMINESCENCE PROPERTIES; BLUE; LUMINESCENCE; GROWTH; STABILITY; AFTERGLOW; ACID;

D O I：

10.1111/jace.16065

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this paper, we introduced a bluish violet-emitting phosphor Ca3Al4ZnO10:Ti (IV) (CAZO:Ti4+) synthesized by high-temperature solid-state reaction. Upon 265nm excitation, a broad emission band spanned from 300nm to 500nm and centered at 370nm was observed. In addition, the effects of flux and charge compensation to photoluminescence properties of CAZO:Ti4+ were systematically investigated. The results show that 103% improvement of emission intensity was achieved when 1% H3BO3 flux was introduced and 32.8% enhancement of it for 2% Ca2+ vacancies doped as charge compensator. Moreover, the lifetimes, band gap energy, concentration quenching mechanism, as well as electron transition process of CAZO:Ti4+ were discussed. Due to the efficient broad bluish violet emission, this phosphor may find a potential application in mercury vapor-excited fluorescent lamp for plant growth.

引用

页码：1843 / 1851

页数：9

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