 This paper presents a new type of photodetector made up of a PDC2 layer sandwiched between two layers of perovskite. This combination of materials allows for a broadband response from deep ultraviolet to near-infrared wavelengths, making it ideal for use in optoelectronics. The device has a high sensitivity, fast response time, and good polarization sensitivity, which makes it suitable for use in a variety of applications such as imaging and sensing. This article was authored by Long Huizeng, Qingming Chen, Ji Xiangzhang, and others.