Super Broadband Near-Infrared Phosphors with High Radiant Flux as Future Light Sources for Spectroscopy Applications

被引：380

作者：

Rajendran, Veeramani ^{[1
,2
,3
]}

Fang, Mu-Huai ^{[1
]}

De Guzman, Gabriel Nicolo ^{[4
]}

Lesniewski, Tadeusz ^{[5
]}

Mahlik, Sebastian ^{[5
]}

Grinberg, Marek ^{[5
]}

Leniec, Grzegorz ^{[6
]}

Kaczmarek, Slawomir M. ^{[6
]}

Lin, Yan-Shen ^{[7
]}

Lu, Kuang-Mao ^{[7
]}

Lin, Chih-Min ^{[7
]}

Chang, Ho ^{[2
,3
]}

Hu, Shu-Fen ^{[4
]}

Liu, Ru-Shi ^{[1
,2
,3
]}

机构：

[1] Natl Taiwan Univ, Dept Chem, Taipei 106, Taiwan

[2] Natl Taipei Univ Technol, Dept Mech Engn, Taipei 106, Taiwan

[3] Natl Taipei Univ Technol, Grad Inst Mfg Technol, Taipei 106, Taiwan

[4] Natl Taiwan Normal Univ, Dept Phys, Taipei 116, Taiwan

[5] Gdansk Univ, Fac Math Phys & Informat, Inst Expt Phys, Wita Stwosza 57, PL-80308 Gdansk, Poland

[6] West Pomeranian Univ Technol Szczecin, Dept Mech Engn & Mech, Inst Phys, Al Piastow 48, PL-70311 Szczecin, Poland

[7] Everlight Elect Co Ltd, New Taipei 238, Taiwan

来源：

ACS ENERGY LETTERS | 2018年 / 3卷 / 11期

关键词：

LONG-PERSISTENT PHOSPHORESCENCE; HIGH-PRESSURE SPECTROSCOPY; OPTICAL-ABSORPTION; NIR SPECTROSCOPY; EMITTING-DIODES; CR3+; LUMINESCENCE; EPR; RED; EMISSION;

D O I：

10.1021/acsenergylett.8b01643

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The near-infrared (NIR) light source is desirable for realtime nondestructive examination applications, which include the analysis of foodstuffs, health monitoring, iris recognition, and infrared cameras. The emission spectra of such an infrared light source should also be as broad as possible for effective performance, in view of the fact that the broad absorption and reflection of light by the organic elements present in foodstuffs and human health fall in the blue and NIR regions of the electromagnetic spectrum, respectively. In this letter, a blue light-emitting diode (LED) excitable super broadband NIR phosphor light source is developed with a high fwhm of 330 nm and radiant flux of 18.2 mW for the first time. The observation of super broad -band luminescence from two distinct luminescence centers is studied and evidenced by electron paramagnetic resonance, X-ray absorption near-edge structure, steady-state luminescence, and time resolved luminescence at ambient and high-pressure environments. Finally, the luminescence mechanism is discussed with the relevant configurational coordinate diagrams.

引用

页码：2679 / 2684

页数：11

共 28 条

[1] EPR, optical absorption and luminescence studies of Cr3+-doped antimony phosphate glasses [J].