Self-powered Organic Photodiode for Near-Infrared Sensing with Functional Interlayer

An organic photovoltaic capable of generating light in the near-infrared wavelength band was fabricated herein through bandgap matching of the organic photovoltaic photoactive polymer for sensing in the near-infrared region. In addition, the organic photovoltaic was optimized through a newly synthesized functional intermediate layer. This functional intermediate layer is a hole transfer layer, complementing the shortcomings of existing hole transfer layers. We fabricated $\mathbf{PTB}7-\mathbf{th}:\mathbf{PC}_{70}\mathbf{BM}$ active layer based organic photodiode. Thus, an organic photodiode capable of sensing more effectively in the near-infrared region was developed by inserting the functional interlayer.