Thermally stimulated exciton emission in Si nanocrystals
作者机构：Van der Waals-Zeeman InstituteUniversity of AmsterdamScience Park 9041098 XHAmsterdamThe Netherlands Department of Chemical Physics and OpticsFaculty of Mathematics and PhysicsCharles UniversityKe Karlovu 312116 Prague 2Czech Republic Department of Electrical Engineering and Computer ScienceUniversity of Michigan2200 Bonisteel BlvdAnn ArborMI 48109USA Ioffe InstituteRussian Academy of Sciences26 Polytechnicheskaya194021 St PetersburgRussia
出 版 物：《Light(Science & Applications)》 (光（科学与应用)（英文版）)
年 卷 期：2017年第6卷第1期
页 面：228-234页
核心收录：
学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学]
基 金：supported by the Dutch Technology Foundation STW,which is part of the Netherlands Organisation for Scientific Research(NWO) funded by the Ministry of Economic Affairs support within the framework of the Czech-German collaborative project,16-09745J(DFT-GACR) supported by the Russian Science Foundation,Grant No.14-12-01067
主 题：micro-photoluminescence nanocrystal optical spectroscopy silicon thermal
摘 要：Increasing temperature is known to quench the excitonic emission of bulk silicon,which is due to thermally induced dissociation of ***,we demonstrate that the effect of temperature on the excitonic emission is reversed for quantumconfined silicon *** laser-induced heating of silicon nanocrystals embedded in SiO2,we achieved a more than threefold(4300%)increase in the radiative(photon)emission *** theoretically modeled the observed enhancement in terms of the thermally stimulated effect,taking into account the massive phonon production under intense *** results elucidate one more important advantage of silicon nanostructures,illustrating that their optical properties can be influenced by *** also provide an important insight into the mechanisms of energy conversion and dissipation in ensembles of silicon nanocrystals in solid *** practice,the radiative rate enhancement under strong continuous wave optical pumping is relevant for the possible application of silicon nanocrystals for spectral conversion layers in concentrator photovoltaics.
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