Giant tunability of upconversion photoluminescence in Er3+-doped (K, Na)NbO3 single crystals

doi:10.1039/c9nr05817f

	Giant tunability of upconversion photoluminescence in Er3+-doped (K, Na)NbO3 single crystals
	Xue, Saidong; Deng, Hao; Xie, Qingxiu; Hu, Yuqing; Yan, Jianmin; Zhao, Xiangyong; Wang, Feifei; Zhang, Quan; Luo, Laihui; Deng, Chenguang
刊名	NANOSCALE
	2019-09-28
卷号	11 期号:36 页码:16928
ISSN号	2040-3364
DOI	10.1039/c9nr05817f
文献子类	Article
英文摘要	Perovskite oxides with luminescent ions hold great promise in optoelectronic devices because of their outstanding thermal stabilities and electro-optic performance. As one typical perovskite upconversion (UC) host material, lead-free potassium sodium niobate ((K, Na)NbO3/(KxNa1-x)NbO3 or KNN) has attracted much attention in recent years. In the present work, a novel routine was developed to tune the upconversion photoluminescence (UC PL) performance by controlling the oxygen vacancy concentration in the KNN matrix, based on the 0.1% Er3+-doped KNN (Er-KNN) single crystals grown for the first time. UC PL properties, conductivity and defect chemistry of the single crystals were systematically investigated. The UC PL intensity of the as-grown Er-KNN material could be enhanced by 20 times after oxygen atmosphere annealing at 800 degrees C and fully quenched after vacuum annealing. What's more, by annealing under an oxygen atmosphere and vacuum, the conductivity of the Er-KNN sample was successfully tuned for more than 8 orders of magnitude. The super-wide range tunability of UC PL performance and conductivity could be explained by oxygen vacancies which gave rise to Nb5+-Nb4+ valence alternation. Because of the modulated photoluminescence properties and conductivity, our grown Er-KNN single crystals have great potential for use in multifunctional devices.
WOS关键词	IMPROVED SOLAR ABSORPTION ; NIOBATE PARTICLES ; PHASE ; NANOPARTICLES ; NB2O5 ; TIO2
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	ROYAL SOC CHEMISTRY
内容类型	期刊论文
源URL	[http://ir.sic.ac.cn/handle/331005/27532]
专题	中国科学院上海硅酸盐研究所
推荐引用方式 GB/T 7714	Xue, Saidong,Deng, Hao,Xie, Qingxiu,et al. Giant tunability of upconversion photoluminescence in Er3+-doped (K, Na)NbO3 single crystals[J]. NANOSCALE,2019,11(36):16928.
APA	Xue, Saidong.,Deng, Hao.,Xie, Qingxiu.,Hu, Yuqing.,Yan, Jianmin.,...&Luo, Haosu.(2019).Giant tunability of upconversion photoluminescence in Er3+-doped (K, Na)NbO3 single crystals.NANOSCALE,11(36),16928.
MLA	Xue, Saidong,et al."Giant tunability of upconversion photoluminescence in Er3+-doped (K, Na)NbO3 single crystals".NANOSCALE 11.36(2019):16928.