Near-infrared emitting Ca5(PO4)3Cl:Eu2+,Nd3+ phosphor for modification of the solar spectrum

被引：13

作者：

Tawalare, P. K. ^{[1
]}

Bhatkar, V. B. ^{[2
]}

Omanwar, S. K. ^{[1
]}

Moharil, S. V. ^{[3
]}

机构：

[1] St Gadge Baba Amravati Univ, Dept Phys, Amravati 444602, India

[2] Shri Shivaji Sci Coll, Dept Phys, Amravati, India

[3] Rashtrasant Tukadoji Maharaj Nagpur Univ, Dept Phys, Nagpur, Maharashtra, India

来源：

LUMINESCENCE | 2018年 / 33卷 / 07期

关键词：

Eu2+Nd3+ energy transfer; near-infrared; neodymium; photoluminescence; solar photovoltaics; ENERGY-TRANSFER; STRUCTURE REFINEMENT; LUMINESCENCE; CHLORAPATITE; EU2+; HYDROXYAPATITE; CHLOROAPATITE; CA5(PO4)3CL; EFFICIENCY; CONVERSION;

D O I：

10.1002/bio.3548

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Intense near-infrared (NIR) emitting phosphors Ca-5(PO4)(3)Cl:Eu2+,Nd3+ were synthesized using a conventional solid-state reaction method and characterized using X-ray diffraction, reflectance, photoluminescence (PL) emission and PL excitation (PLE) spectroscopy, and PL lifetime measurements. The emission could be excited by broad band radiation in the nUV region as a consequence of Eu2+Nd3+ energy transfer. The efficiency of Eu2+Nd3+ energy transfer was as high as 80.8%. Two components observed in the decay curves could be identified with Eu2+ substituting different Ca2+ sites. Eu2+ lifetimes were shortened after Nd3+ doping. Near infra-red emission intensity was limited by Nd3+Nd3+ energy transfer and the consequent concentration quenching. The critical distance for Nd3+Nd3+ energy transfer was estimated to be 11.41 angstrom. Absorption of nUV radiations followed by conversion to NIR indicated the potential application in solar photovoltaics.

引用

页码：1288 / 1293

页数：6

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