Abstract
This research focuses on the performance analysis of planar and bulk heterostructure photodetector based on Pentacene and cupric oxide (CuO) for an optimized spectral response. Planar structure ITO/PEDOT:PSS/Pentacene/CuO/Al and bulk-heterostructure ITO/PEDOT:PSS/Pentacene:CuO/Al are compared for the analysis. The research is based on the structure's optical and electrical properties. It was discovered that the devices perform admirably in terms of spectral response range, spanning from UV (ultraviolet)-to-NIR (near-infrared). Also, the carrier transport mechanism employs a photomultiplication process, which results in high external quantum efficiency (EQE). For the photodetectors under analysis, the bulk heterostructure device is recognized to have the best UV and NIR spectral performance, while the planar heterostructure device shows the best visible (Vis) spectral response. This illustrates that structural engineering can be opted in such kind of photodetectors for an optimized spectral response.
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