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arXiv · 1205.6251

Ultra-broad near-infrared photoluminescence from crystalline (K-crypt)2Bi2 containing [Bi2]2- dimers

Hong-Tao Sun·Tetsu Yonezawa·Miriam M. Gillett-Kunnath·Yoshio Sakka·Naoto Shirahata·Sa Chu Rong Gui·Minoru Fujii·Slavi C. Sevov
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Abstract

For the first time, we report that a single crystal of (K-crypt)2Bi2 containing [Bi2]2+ displays ultra-broad near-infrared photoluminescence (PL) peaking at around 1190 nm and having a full width at the half maximum of 212 nm, stemming from the inherent electronic transitions of [Bi2]2+.The results not only add to the number of charged Bi species with luminescence, but also deepen the understanding of Bi-related near-infrared emission behavior and lead to the reconsideration of the fundamentally important issue of Bi-related PL mechanisms in some material systems such as bulk glasses, fibers, and conventional optical crystals.

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Hong-Tao Sun, Tetsu Yonezawa, Miriam M. Gillett-Kunnath, Yoshio Sakka, Naoto Shirahata, Sa Chu Rong Gui, Minoru Fujii, Slavi C. Sevov. 2012-09-12. Ultra-broad near-infrared photoluminescence from crystalline (K-crypt)2Bi2 containing [Bi2]2- dimers. https://doi.org/10.1039/c2jm34101h

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