Semitransparent organic light detector and preparation method thereof

The invention discloses a semitransparent organic light detector and a preparation method thereof, and belongs to the field of organic photoelectric devices. The device structure of the light detector sequentially comprises a substrate, a transparent conductive anode, a hole transport layer, a light conversion layer, an electron transport layer and a transparent conductive cathode from bottom to top, and the light conversion layer is a bulk heterojunction formed by blending an organic donor and an organic acceptor. Under the conditions of interface optimization, donor and receptor proportion and thickness adjustment and reasonable selection of the thin-layer transparent electrode, the double-sided ratio detectivity of the detector under the working voltage of-0.1 V exceeds 1012 Jones, the detector covers the visible light-near infrared range, the average visible light transmittance of the device reaches 40% or above, and the detector has the characteristics of high specific detectivity and high transmittance