EXPERIMENTAL STUDY OF 3D SELF-ASSEMBLED PHOTONIC CRYSTALS AND COLLOIDAL CORE-SHELL SEMICONDUCTOR QUANTUM DOTS

Authors

Nga Pham Thu
Chinh Vu Duc
Nghia Nguyen Xuan
Huy Nguyen Viet
Thuan Dao Nguyen
Cuong Pham Thai
Ha Chu Viet
Chi Do Do
Dat Nguyen Nhu
Anh Le A Lan
Barthou C.
Benalloul P.
Romanelli M.
Maître A.

Abstract

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.

Publication Date

11-15-2017

Recommended Citation

Thu, Nga Pham; Duc, Chinh Vu; Xuan, Nghia Nguyen; Viet, Huy Nguyen; Nguyen, Thuan Dao; Thai, Cuong Pham; Viet, Ha Chu; Do, Chi Do; Nhu, Dat Nguyen; A Lan, Anh Le; C., Barthou; P., Benalloul; M., Romanelli; and A., Maître (2017) "EXPERIMENTAL STUDY OF 3D SELF-ASSEMBLED PHOTONIC CRYSTALS AND COLLOIDAL CORE-SHELL SEMICONDUCTOR QUANTUM DOTS," ASEAN Journal on Science and Technology for Development: Vol. 24: No. 1, Article 9.
DOI: https://doi.org/10.29037/ajstd.202
Available at: https://ajstd.ubd.edu.bn/journal/vol24/iss1/9