Superbroadband near-IR nano-optical source based on bismuth-doped high-silica nanocrystalline zeolites.
We have shown that efficient superbroadband near-IR luminescence can be realized in bismuth-doped high-silica nanocrystalline zeolites. The emission band covered the range of 930-1620 nm, with a maximum peak at 1146.3 nm, an FWHM of 152 nm, and a lifetime of over 300 mus under the excitation of a 488 nm laser line. The observed luminescence was attributed to subvalent Bi (Bi(+)) ions formed in the annealed zeolites. These Bi-doped nanozeolites may find applications as superbroadband near-IR nano-optical sources.
Sun
Hong-Tao
HT
Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501, Japan. timothyhsun@gmail.com
Miwa
Yuji
Y
Shimaoka
Fumiaki
F
Fujii
Minoru
M
Hosokawa
Akinobu
A
Mizuhata
Minoru
M
Hayashi
Shinji
S
Deki
Shigehito
S