Super broadband near-infrared phosphors with high radiant flux as future light sources for spectroscopy applications
Veeramani Rajendran , Mu-Huai Fang , Gabriel Nicolo De Guzman , Tadeusz Leśniewski , Sebastian Mahlik , Marek Grinberg , Grzegorz Leniec , Sławomir M. Kaczmarek , Yan-Shen Lin , Kuang-Mao Lu , Chih-Min Lin , Ho Chang , Shu-Fen Hu , Ru-Shi Liu
AbstractThe near-infrared (NIR) light source is desirable for real-time nondestructive examination applications, which include the analysis of food stuffs, health monitoring, iris recognition, and infraredcameras. The emission spectra of such an infrared light source shouldalso 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 food stuffs and human health fall in the blue and NIR regions of the electromagnetic spectrum, respectively. In thisletter, a blue light-emitting diode (LED) excitable super broadb and NIR phosphor light source is developed with a high fwhm of 330 nm andradiantflux of 18.2 mW for thefirst time. The observation of super-broad-band luminescence from two distinct luminescence centers isstudied and evidenced by electron paramagnetic resonance, X-rayabsorption near-edge structure, steady-state luminescence, and time-resolved luminescence at ambient and high-pressure environments. Finally, the luminescence mechanism is discussedwith the relevant configurational coordinate diagrams.
|Journal series||ACS Energy Letters, ISSN 2380-8195, (0 pkt)|
|Publication size in sheets||0.5|
|Score||= 5.0, 30-09-2019, ArticleFromJournal|
|Publication indicators||: 2017 = 12.277 (2) - 2017=12.283 (5)|
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