Implementación de un sistema de espectroscopia fotoacústica para la caracterización óptica y térmica de materiales usados ​​en la fabricación de celdas solares DSSC

Abstract

In the Thin Films and Nanophotonics Research Group (PUJ), with the support and collaboration of the Environmental Physics and Solar Energy Research Group (UDFJC), and within the framework of the project “Construction and Analysis of Optical and Electrical Stability of DSSC Solar Cells in the Scaling Phase” of the Physical Chemistry and Mathematical Analysis Research Group (FUA), a photoacoustic spectroscopy (PAS) system was constructed and calibrated. The results demonstrate the successful implementation and calibration of a PAS system capable of measuring amplitude and phase signals consistent with reference materials (water and ethanol), thus validating the experimental setup. By applying the normalization and fitting methodology, effective thermal effusivities of natural and synthetic pigments (annatto, spinach, and ruthenium) were obtained, showing an increase in effusivity with concentration and greater reproducibility when using aluminum as the heating element.