Design and fabrication of a Monitoring System for the Study of Thermal Stability in Organic Solar Cells
Ortiz Hernández, Paola Violeta (1); Barreiro Argüelles, Mirna Denisse (1); Ramírez Como, Magaly (2)
1.- Universidad Tecnológica de la Mixteca, Av. Doctor Modesto Seara Vázquez No. 1, Acatlima, Heroica Ciudad de Huajuapan de León, C.P. 69004. Oaxaca. 2.- Departamento de Física Aplicada, Centro de Investigaciones y Estudios Avanzados del Instituto Politécnico Nacional Unidad Mérida. CP 97310. Mérida, Yucatán
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Abstract
Organic solar cells (OSCs) exhibit various types of degradation, ranging from chemical reactions between layers and electrodes to environmental factors such as humidity. To quantify the effects of these phenomena on photovoltaic performance, the ISOS (International Summit on Organic Photovoltaic Stability) protocols are employed. Within these standards, the thermal cycling test (ISOS-T) subjects the cell to high temperatures (65°C–85°C) alternated with ambient temperature. The precise execution of this study (ISOS-T-1 level) requires rigorous control of the maximum temperature, the on/off cycles, the recording of specific parameters, and conditions of total darkness. Based on this methodology, work was carried out with OSCs of the ITO/PDINO/PM6:Y7/MoO3/Ag structure. To ensure data veracity, a specialized system was designed and constructed to heat samples, automate thermal cycles, and continuously monitor ambient temperature and relative humidity. This work details the design and validation of an automated monitoring system for thermal stability studies. The manufacturing process is described, along with the control tests conducted to verify its accuracy and utility for characterizing the operational lifetime of cells under controlled thermal conditions.
Keywords: Monitoring; Thermal Stability; Thermal Cycling