Fabrication and optical properties of 3D composite photonic crystals of core–shell structures

2007 ◽  
Vol 253 (21) ◽  
pp. 8571-8574 ◽  
Author(s):  
Yanping Liu ◽  
Zhijun Yan ◽  
Wei Lan ◽  
Chunming Huang ◽  
Yinyue Wang
2011 ◽  
Vol 109 (11) ◽  
pp. 113515 ◽  
Author(s):  
S.-Y. Li ◽  
G. A. Niklasson ◽  
C. G. Granqvist

2017 ◽  
Vol 24 (1&2) ◽  
pp. 161-170
Author(s):  
Pham Thu Nga ◽  
Vu Duc Chinh ◽  
Nguyen Xuan Nghia ◽  
Nguyen Viet Huy ◽  
Dao Nguyen Thuan ◽  
...  

In this contribution we present an experimental study of 3D opal photonic crystals. The samples are opals constituted by colloidal silica spheres, realized with self-assembly technique. The sphere diameter is selected in order to obtain coupling of the photonic band gap with the emission from CdSe/ZnS colloidal quantum dots. The quantum dots infiltrated in the opals is expected to be enhanced or suppressed depending on the detection angle from the photonic crystal. The structural and optical characterization of the SiO2 opal photonic crystals are performed by field-emission scanning electron microscopy and reflectivity spectroscopy. Measurements performed on samples permits to put into evidence the influence of the different preparation methods on the optical properties. Study of self-activated luminescence of the pure opals is also presented. It is shown that the luminescence of the sample with QDs have original QD emission and not due to the photonic crystal structure. The optical properties of colloidal core-shell semiconductor quantum dots of CdSe/ZnS which are prepared in our lab will be mention.


2014 ◽  
Vol 50 (35) ◽  
pp. 4635-4638 ◽  
Author(s):  
Revital Kaminker ◽  
Michal Lahav ◽  
Marc Altman ◽  
Guennadi Evmenenko ◽  
Pulak Dutta ◽  
...  

A gold nanoparticle platform enhances the optical properties and order in a metal–organic network (MON).


2011 ◽  
Vol 289 (13) ◽  
pp. 1511-1518 ◽  
Author(s):  
Monika Gosecka ◽  
Nebewia Griffete ◽  
Claire Mangeney ◽  
Mohamed M. Chehimi ◽  
Stanislaw Slomkowski ◽  
...  

Nanoscale ◽  
2019 ◽  
Vol 11 (48) ◽  
pp. 23251-23258 ◽  
Author(s):  
Sang Hyeon Lee ◽  
Yongwook Kim ◽  
Hyosook Jang ◽  
Ji Hyun Min ◽  
Juwon Oh ◽  
...  

Core/shell/shell InP QDs with discrete mid-shell structures show better optical properties than those with gradient mid-shell structures.


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