Synthesis and study of the optical properties of dielectric Bragg reflectors infiltrated with 6G-Rhodamine

21st Latin American Symposium on Solid State Physics

Gómez-Barojas, E.^1 ; Aca-López, V.^1 ; Sánchez-Mora, E.^2 ; Silva-González, R.^2 ; Luna-López, J.A.^1

CIDS-IC, Benemérita Universidad Autónoma de Puebla, Apdo. Postal 196, Pue. 72000. Puebla, Mexico^1

Instituto de Física, Benemérita Universidad Autónoma de Puebla, Apdo. Postal J-48, Pue. 72570 Puebla, Mexico^2

关键词: 3-Mercaptopropyltrimethoxysilane;    Anodizing process;    Constructive interference;    Dielectric Bragg reflectors;    Gravimetric measurements;    Scanning electron micrographs;    Single porous silicons;    Two electrodes;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/480/1/012014/pdf
DOI  :  10.1088/1742-6596/480/1/012014

来源: IOP

【 摘 要 】

We report the study of the optical properties of 6G-Rhodamine (Rhd) infiltrated porous silicon dielectric Bragg reflectors (DBRs) with 31 constituent periods. The DBRs were obtained by an electrochemical anodizing process of Si in a two electrodes Teflon cell. The porosity was determined by gravimetric measurements on single Porous silicon (PSi) layers. Based on the characterization results of single layers the DBRs were synthesized. After anodizing, the DBRs were silanized with a 3-mercaptopropyltrimethoxysilane solution and functionalized with Rhd solutions at different concentrations. Cross section scanning electron micrographs show that the DBRs synthesis was successful. After each preparation step, Reflectance and Fluorescence (FL) spectra were recorded. These spectra show that as the Rhd concentration in solution is increased the stop band intensity as well as the FL intensity are enhanced due to constructive interference effects.