Research on structure and mid-infrared photoluminescence of Ga3+/Er3+ co-doped As-S glasses

Huang, Yan; Liu, Zijun; Chen, Hua; Bian, Junyi; Zhang, Xianghua; Wang, Xunsi; Dai, Shixun

doi:10.1016/j.jnoncrysol.2017.07.002

Cited by 7 publications

(1 citation statement)

References 28 publications

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“…Furthermore, it also shows intense mid‐infrared luminescence at 2550–2850 and 4300–4950 nm (Figure f,g), which are originated from 4 I 11/2 → 4 I 15/2 and 4 I 9/2 → 4 I 11/2 electronic transitions . It is necessary to note that the past researches about the mid‐infrared luminescence at 4300–4950 nm are strictly limited to the chalcogenide and halogenide host . To the best of our knowledge, it is the first time to report the radiative transition beyond 4300 nm in Er 3+ ‐doped oxide nanoceramics system.…”

Section: Resultsmentioning

confidence: 99%

Pressureless Crystallization of Glass for Transparent Nanoceramics

et al. 2019

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Transparent nanoceramics embedded with highly dense crystalline domains are promising for applications in missile guidance, infrared night vision, and laser and nuclear radiation detection. Unfortunately, current nanoceramics are strictly constrained by the stringent construction procedures such as super‐high pressure and containerless processing. Here, a pressureless crystallization engineering strategy in glass for elaboration of transparent nanoceramics and fibers is proposed and experimentally demonstrated. By intentional creation of a sharp contrast between nucleation and growth rates, the crystal growth rate during glass crystallization can be significantly suppressed. Importantly, this unique phase‐transition habit enables the achievement of transparent nanoceramics and even smooth fibers with extremely tiny crystalline size (≈20 nm) and high crystallinity (≈97%) under atmospheric pressure. This allows the generation of an attractive nonlinear optical response such as dynamic optical filtering and luminescence in the mid‐infrared waveband of 4300–4950 nm. These findings highlight that the strategy to switch the phase‐transition habit of glass into the unconventional crystallization regime may provide new opportunities for the creation of next‐generation nanoceramics and fibers.

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Section: Resultsmentioning

confidence: 99%