Surface plasmon polariton mediated photoluminescence from excitons in silicon nanocrystals
Surface plasmon polariton mediated photoluminescence from excitons in silicon nanocrystals
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DOI：
10.1063/1.2345261
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发表时间：
2006-09-04
影响因子：
4
通讯作者：
Hayashi, Shinji
中科院分区：
文献类型：
--
作者：
Takeda, Eiji;Nakamura, Toshihiro;Hayashi, Shinji
当光发射器被放置在附近时，金属膜的表面等离子体激元（SPP）可以被有效地激发。通过补偿动量失配，激发的SPP被转换为光子。通过在硅纳米晶附近的薄Au膜上放置有机光栅，研究了硅纳米晶中激子的SPP介导发射。色散关系由角分辨光致发光测量得到，模型计算很好地解释了所有观察到的模式。结果表明，硅纳米晶中的激子可以有效地激发金属薄膜中的表面等离子体，实现定向光致发光。(c)2006年，美国物理学会。
Surface plasmon polaritons (SPPs) of a metal film can efficiently be excited when a light emitter is placed nearby. The excited SPPs are converted to photons by compensating for the momentum mismatch. The authors study SPP-mediated emission from excitons in Si nanocrystals (Si-nc's) by placing an organic grating on a thin Au film placed near Si-nc's. The dispersion relation is obtained from angle-resolved photoluminescence measurements, and all the observed modes are well explained by model calculation. The results indicate that excitons in Si-nc's can efficiently excite SPPs in thin metal films and directed photoluminescence can be realized. (c) 2006 American Institute of Physics.