Enhanced down conversion of photons emitted by photoexcited ErxY2-xSi2O7 films grown on silicon

被引：37
作者：
Miritello, Maria [1 ,2 ]
Lo Savio, Roberto [1 ,2 ]
Cardile, Paolo [1 ,2 ,3 ]
Priolo, Francesco [1 ,2 ,3 ]
机构：
[1] CNR, INFM, MATIS, I-95123 Catania, Italy
[2] Catania Univ, Dipartimento Fis & Astron, I-95123 Catania, Italy
[3] Scuola Super Catania, I-95123 Catania, Italy
来源：
PHYSICAL REVIEW B | 2010年 / 81卷 / 04期
关键词：
ENERGY-TRANSFER; GLASS-CERAMICS; QUANTUM; NANOCRYSTALS; PERFORMANCE; EFFICIENCY; AMPLIFIERS; EXCITONS;
D O I：
10.1103/PhysRevB.81.041411
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Photon cutting with efficiencies up to 400% is demonstrated in ErxY2-xSi2O7 films grown on Si and its concentration dependence is analyzed. The cutting is the result of cross-energy-transfer processes occurring within a single rare earth (Er3+) acting as both sensitizer and activator. Similarities with upconversion are revealed and possible applications in solar cells are discussed.
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页数：4
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