Near infrared emission from molecule-like silver clusters confined in zeolite A assisted by thermal activation

Journal Article · Mon Jul 07 00:00:00 EDT 2014 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.4886697· OSTI ID:22306161

Lin, Hui; Imakita, Kenji; Rong Gui, Sa Chu; Fujii, Minoru ^[1]

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1. Department of Electrical and Electronic Engineering, Graduate School of Engineering, Kobe University, Rokkodai, Nada, Kobe 657-8501 (Japan)

Strong and broad near infrared (NIR) emission peaked at ~855 nm upon optimal excitation at 342 nm has been observed from molecule-like silver clusters (MLSCs) confined in zeolite A assisted by thermal activation. To the best of our knowledge, this is the first observation of NIR emission peaked at longer than 800 nm from MLSCs confined in solid matrices. The decay time of the NIR emission is over 10 μs, which indicates that it is a spin-forbidden transition. The ~855 nm NIR emission shows strong dependence on the silver loading concentration and the thermal activation temperature.

• OSTI ID: 22306161
• Journal Information: Journal of Applied Physics, Vol. 116, Issue 1; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); ISSN 0021-8979
• Publisher: American Institute of Physics (AIP)
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ATOMIC CLUSTERS
CONCENTRATION RATIO
EMISSION
EXCITATION
FORBIDDEN TRANSITIONS
MOLECULES
NEAR INFRARED RADIATION
SILVER
SOLIDS
SPIN
ZEOLITES