Improved Electrical Efficiency and Thermal Efficiency Thanks to Active Cooling by Hybrid Nano Fluid for an Organic Cell Based on PTB7: PC70BM

Abstract

This work investigates the effect of daily thermal cycling on organic solar cells (PTB7:PC₇₀BM). The effectiveness of this system is evaluated by using a liquid-cooled nanohybrid to improve device performance and durability. Two scenarios are compared: one without cooling and one with active cooling. The results demonstrate that cooling increases the thermal efficiency and electrical stability, while reducing degradation of organic solar cells. Based on this, a structural analysis of the material was performed to study the effects of conductivity dynamics, operating temperature, and series resistance. This approach determines the optimal conditions for efficient operation. Furthermore, cooling organic solar cells using a liquid-cooled nanohybrid contributes to extending the cell lifetime by mitigating the thermal effects of the operating environment. Overall, the results highlight the high sensitivity of organic solar cells to thermal stress and emphasize the importance of proper thermal control to ensure efficient and excellent performance over a long period of time.