D5.1 - Quantification of Volatile Organic Compounds in the ppb-range using Partial Least Squares Regression

Abstract

Gas-sensitive, silicon carbide based field-effect transistors (SiC-FETs) with platinum gate are operated dynamically using temperature cycled operation (TCO) to quantify three hazardous volatile organic compounds (VOCs), i.e. benzene, naphthalene and formaldehyde, in the low ppb range. A suitable temperature cycle is developed based on static response measurements, and a linear model is built employing Partial Least Squares Regression (PLSR) with features extracted from the temperature cycle. Additionally, a strategy for cycle optimization using a t-test on the model coefficients is presented.