Optoelectrical Comparison of Electron Transport Layer for High-Performance Indoor Organic Solar Cells
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With the development of the internet of things (IoTs), organic photovoltaics have garnered attention as an environmentally friendly and cost-effective power source. These types of photovoltaics allow for tunable light absorption regions and have high photon to charge conversion efficiency, making them an ideal candidate for indoor environments. However, to produce high-performance organic solar cells and minimize trap states within devices, precise control of the charge transport layer is necessary. In this study, we compared the optoelectrical properties of organic solar cells using three different electron transport materials (ETM): PNDIT-F3N-Br, PDI-NO, and ZnO NPs. All devices were measured at AM 1.5 G and 2700K LED 2000 lux conditions, revealing that devices with PNDIT-F3N-Br and ZnO NPs performed approximately 10 to 20% better than those with PDI-NO. Subsequently, an additional analysis was conducted to investigate how these ETMs affected indoor organic solar cell performance.