Absorbance and chromatic dispersion of red dye in porous silicon

Authors

Jazline D. Bautista ⋅ PH Polytechnic University of the Philippines
Mary Baby Aizeil A. Catalan ⋅ PH Polytechnic University of the Philippines
Charlene E. De Luna ⋅ PH Polytechnic University of the Philippines
Arven I. Cafe ⋅ PH National Institute of Physics, University of the Philippines Diliman
Joybelle M. Lopez ⋅ PH Materials Science and Engineering Program, University of the Philippines Diliman
Noel Jesus G. Oliver, Jr. ⋅ PH National Institute of Physics, University of the Philippines Diliman
Rogelio G. Dizon ⋅ PH Polytechnic University of the Philippines
Arnel A. Salvador ⋅ PH National Institute of Physics, University of the Philippines Diliman
Elmer S. Estacio ⋅ PH National Institute of Physics, University of the Philippines Diliman
Armando S. Somintac ⋅ PH National Institute of Physics, University of the Philippines Diliman

Abstract

A method of determining the amount of red dye in deionized water using Porous silicon (PSi) as optical template was demonstrated. In this technique, absorbance and chromatic dispersion of red dye solution in PSi was obtained via reflectance spectroscopy. Test liquids used are different concentrations of red dye in DI ranging from 20%-100%. Calculations were made and dispersion of absorbance and effective refractive index were modeled using Extended Cauchy and Sellmeier’s empirical equation respectively. It was found that the sensitivity of detection is negative and largest at near IR ~0.4704 for Δn_PSi , while smallest at visible region for absorbance ~0.1712.

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Issue

2016: Proceedings of the 34th Samahang Pisika ng Pilipinas Physics Conference

Article ID

SPP-2016-5A-03

Section

Optics and Photonics

Published

2016-08-18

How to Cite

[1]

JD Bautista, MBAA Catalan, CE De Luna, AI Cafe, JM Lopez, NJG Oliver, RG Dizon, AA Salvador, ES Estacio, and AS Somintac, Absorbance and chromatic dispersion of red dye in porous silicon, Proceedings of the Samahang Pisika ng Pilipinas 34, SPP-2016-5A-03 (2016). URL: https://proceedings.spp-online.org/article/view/SPP-2016-5A-03.