Circularly polarized optoelectronic synaptic diode device based on chiral organic small molecule materials

With the continuous advancement of digitalization, the complexity of optical signal processing has increased dramatically. Achieving multifunctional and switchable processing of optical signals on a single device has become an important research goal. Based on this, we have successfully developed a photodiode device based on chiral organic small-molecule materials. Under the conditions with negative or zero voltage, the device can differentiate circularly polarized light signals with different handedness with a high precision, exhibiting excellent performance in circularly polarized light detection. When switched to a positive bias state, the device exhibits a charge accumulation phenomenon at the interface layer, causing a change in the interfacial conductivity and thus generating a synaptic effect. The dual-mode switching characteristics of this device break through the limitation of the single-functionality of traditional optoelectronic devices. Its innovative design combines the optoelectronic synergistic regulation of chiral materials with synaptic biomimetic mechanisms, providing a multifunctional and integrated solution for fields such as optical communication, intelligent sensing, and neuromorphic computing. This device demonstrates the potential in driving the development of next-generation optoelectronic technologies.