Optical absorption and emission of silicon nanocrystals: From single to collective response

被引：17

作者：

Guerra, Roberto ^{[1
]}

Cigarini, Francesco ^{[2
]}

Ossicini, Stefano ^{[1
,2
]}

机构：

[1] Univ Modena & Reggio Emilia, Ctr Interdipartimentale En&Tech, I-42122 Reggio Emilia, Italy

[2] Univ Modena & Reggio Emilia, Dipartimento Sci & Metodi Ingn, I-42122 Reggio Emilia, Italy

来源：

JOURNAL OF APPLIED PHYSICS | 2013年 / 113卷 / 14期

关键词：

QUANTUM DOTS; PHOTOLUMINESCENCE SPECTROSCOPY; ELECTRONIC-STRUCTURE; CONFINEMENT; GERMANIUM;

D O I：

10.1063/1.4799394

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

ensemble of silicon nanocrystals (NCs) with realistic distributions in the NC size, by the sum of the responses of the single NCs. The individual NC responses are evaluated by means of ab initio theoretical calculations and the summation is performed by taking into account the trend of the optical properties as a function of NC size and oxidation degree. The comparison with experimental results shows a nice matching of the spectra, also without any tuning of the parameters. Finally, the possibility of adapting the model in order to reproduce the experimental data is explored and discussed. (C) 2013 American Institute of Physics. [http://dx.doi.org/10.1063/1.4799394]

引用

页数：8

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