@misc{10481/64151,
year = {2020},
month = {8},
url = {http://hdl.handle.net/10481/64151},
abstract = {In this work, we propose a new model describing the relationship between the analyte concentration and the instrument response in photoluminescence sensors excited with modulated light sources. The concentration is modeled as a polynomial function of the analytical signal corrected with an exponent, and therefore the model is referred to as a polynomial-exponent (PE) model. The proposed approach is motivated by the limitations of the classical models for describing the frequency response of the luminescence sensors excited with a modulated light source, and can be considered as an extension of the Stern–Volmer model. We compare the calibration provided by the proposed PE-model with that provided by the classical Stern–Volmer, Lehrer, and Demas models. Compared with the classical models, for a similar complexity (i.e., with the same number of parameters to be fitted), the PE-model improves the trade-off between the accuracy and the complexity. The utility of the proposed model is supported with experiments involving two oxygen-sensitive photoluminescence sensors in instruments based on sinusoidally modulated light sources, using four different analytical signals (phase-shift, amplitude, and the corresponding lifetimes estimated from them).},
organization = {Spanish Ministry of Economy, Industry and Competitiveness 	
CTQ2014-53442-P
BES-2009-026919
PTQ-15-07922
PTQ-15-07912},
organization = {CEI BioTic Granada Campus 	
CEIbioTIC14-2015},
publisher = {MDPI},
keywords = {Calibration},
keywords = {Chemical sensor},
keywords = {Photoluminescence},
keywords = {Oxygen sensing},
keywords = {Frequency response},
keywords = {Stern–Volmer model},
keywords = {Lehrer model},
keywords = {Demas model},
keywords = {Polynomial-exponent model},
title = {A Polynomial-Exponent Model for Calibrating the Frequency Response of Photoluminescence-Based Sensors},
doi = {10.3390/s20164635},
author = {Torre Vega, Ángel De La and Medina Rodríguez, Santiago and Segura Luna, José Carlos and Fernández Sánchez, Jorge Fernando},
}