title: Bandwidth broadening of near-infrared emission through nanocrystallization in Bi/Ni co-doped glass.
abstract: We demonstrated an effective way to broaden the bandwidth of near-infrared (NIR) emission from Bi/Ni codoped 58SiO₂₋21ZnO-13Al₂₋O₃₋5TiO₂₋3Ga₂O₃ glass through nanocrystallization. The nanocrystallized glass shows ultra-wide NIR luminescence with a full width at half maximum (FWHM) of 350 nm and long lifetime up to 476 µs. The observed broadband NIR emission, attributed to energy transfer suppression between Ni and Bi active centers, was realized by a separation process with Ni²⁺ ions selectively incorporated into nanocrystals. This bandwidth engineering through nanocrystallization inside glass suggests a promising approach for enhancement of glass functionality and construction of broadband light sources.
authors.affiliation: State Key Laboratory of Silicon Materials, Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, China.
authors.forename: Ke
authors.initials: K
authors.lastname: Zhang
authors.forename: Shifeng
authors.initials: S
authors.lastname: Zhou
authors.forename: Yixi
authors.initials: Y
authors.lastname: Zhuang
authors.forename: Rong
authors.initials: R
authors.lastname: Yang
authors.forename: Jianrong
authors.initials: J
authors.lastname: Qiu