Design and optimization of high-performance MoSe2/PC60BM heterostructure based self-powered photodetector

This study explores the performance of molybdenum diselenide (MoSe2) based photodetectors for wearable technology, point-of-care diagnostics, and environmental monitoring, focusing on the MoSe2 absorber layer and [6,6]-phenyl C60 butyric acid methyl ester (PC60BM) in an Au/MoSe2/PC60BM/FTO configuration. Using the solar cell capacitance simulator, we optimized various physical parameters of the MoSe2 layer, including thickness, doping, defect density, interfacial defects, and radiative recombination, to achieve optimal device performance. The optimized device exhibited a maximum detectivity of 6.70x1013 Jones and a responsivity of 0.60 A/W under 790 nm illumination. The impact of incident power, temperature, and different metal contacts was also examined. This study uniquely integrates multiple critical parameters, including temperaturedependent behavior and metal contact effects, providing a comprehensive analysis that differentiates it from previous work. Our findings highlight the potential of transition metal dichalcogenides (TMDC) based photodetectors for a range of optoelectronic applications.