Enhanced Sunlight Excited 1‐μm Emission in Cr³⁺–Yb³⁺ Codoped Transparent Glass‐Ceramics Containing Y₃Al₅O₁₂ Nanocrystals

Abstract

Cr 3+ -Yb 3+ codoped transparent glass-ceramics containing Y 3 Al 5 O 12 nanocrystals were prepared by heat treatment of as-prepared glass sample and characterized by X-ray diffraction and transmission electron microscopy. The efficient energy transfer from Cr 3+ to Yb 3+ ions through multi-phononassisted process was confirmed by the luminescence spectrum and fluorescent lifetime measurements. When excited by the lights from a solar simulator in the wavelength region of 400-800 nm, greatly enhanced near-infrared emission around 1 lm was achieved from Cr 3+ -Yb 3+ codoped glass ceramic compared with that from as-prepared glass and Ce 3+ -Yb 3+ codoped glass ceramic. These results demonstrate that the Cr 3+ -Yb 3+ codoped glass ceramic is a promising material for enhancement of the efficiency of solar energy utilization.R. Hay-contributing editor Manuscript No. 35081.

Transition metals as optically active dopants in glass-ceramics

“…36 Finally, the energy transfer from Cr 3+ to Yb 3+ in a YAG GC can be advantageously used to converts the VIS sunlight to NIR emission at 1030 nm with a high efficiency. 37 The development of luminescent materials in the near infra-red window has been extensively explored, achieving some promising results in the field of telecommunication and information technology (broadband amplifiers, tunable lasers, smart solid-state lighting) 38,39 , in medical diagnostic and surgery (bioimaging, photodynamic therapy) 40,41 and, in general, in This is the author's peer reviewed, accepted manuscript. However, the online version of record will be different from this version once it has been copyedited and typeset.…”

Influence of local structural disorders on spectroscopic properties of multi-component CaF2–Bi2O3–P2O5–B2O3 glass ceramics with Cr2O3 as nucleating agent

“…Even though considerable number of spectroscopic studies of Cr 3+ ions doped inorganic glasses are available [8][9][10] such studies on glass ceramics like borophosphates containing Cr 3+ ions mixed with heavy metal oxides like Bi 2 O 3 are very few. Therefore, it is felt worthwhile to A C C E P T E D M A N U S C R I P T ACCEPTED MANUSCRIPT 3 investigate the local structural disorders and their influence on spectroscopic properties of CaF 2 -Bi 2 O 3 -P 2 O 5 -B 2 O 3 glass ceramics doped with different concentrations of Cr 2 O 3 .…”

Mechanistic insight into the non-hydrolytic sol–gel process of tellurite glass films to attain a high transmission

“…Over the past decades, advanced hybrid optoelectronic lms have been widely studied and developed for a broad range of applications that rely on integrating various functional nanoparticles into an amorphous matrix. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] Since the majority of optoelectronic nanoparticles have high refractive indices, e.g., ITO nanoparticles (index ¼ 1. 54 Besides attaining the transparency of the lm itself, the reduced index contrast between the incorporated nanoparticles and the lms can signicantly suppress the scattering, which in turn retains the transparency of the hybrid lms but also enhances the efficiency for light delivery and optical signal collection.…”