期刊
JOURNAL OF PHYSICAL CHEMISTRY C
卷 113, 期 15, 页码 6298-6302出版社
AMER CHEMICAL SOC
DOI: 10.1021/jp810877n
关键词
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资金
- National Nature Science Foundation of China [50772035, 20371017, 20572021]
The concept of dual-excitation dual-emission (DE2) phosphors for the enhancement of solar energy conversion is introduced in this work. Doping alkaline earth cations as an aggregated energy trap within the sulfur host in a controlled manner resulted in the DE2 phosphors with tunable fluorescent emission properties. It had been found the Ca0.6Sr0.4S:0.005Cu(+),0.00Eu(2+) phosphor is the optimal DE2 composition. We demonstrated by field testing results their potentials in enhancing sunlight harvesting to increase production of agricultural plants. Time-dependent density functional theory calculations provide insights about their excitation and emission mechanisms. These DE' phosphors can be applied to a variety of fields, as additives to increase production of agricultural crops, as nanosensor and biolabeling materials for ultrasensitive or green-sensitive detection of biological species such as antibodies, DNA and cells, and other Places.
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