Simulating ambient light adaptability and polarization sensitivity of biological vision is paramount for developing intelligent optoelectronic devices with multi-dimensional perception capabilities.However,achieving b...Simulating ambient light adaptability and polarization sensitivity of biological vision is paramount for developing intelligent optoelectronic devices with multi-dimensional perception capabilities.However,achieving both functionalities in semiconductor devices has historically necessitated complex architectures and high-voltage operation,posing significant challenges for bionic vision systems.Here,we present a light-adaptable and polarization-sensitive bionic vision utilizing a simple yet effective strategy of semiconductor-metal contact engineering in PdSe_(2)transistors.By exploiting the differential coupling strengths at diverse metal-semiconductor interfaces to modulate the dynamics of photogenerated carriers,the device achieves energy-efficient visual adaptive perception across a broad range of lighting conditions,from dim to bright,without the need for additional gate voltage.Furthermore,this transistor enables multi-dimensional perception of visual information through dynamic polarization angle changes and light intensity(dim/bright)detection,providing rich input features for intelligent recognition in complex scenarios.Capitalizing on the intrinsic anisotropy of PdSe_(2)and contact engineering,we have constructed a bionic light-adaptive visual neural network capable of perceiving and recognizing images in complex lighting environments.When enhanced by a residual-generating adversarial network,the system achieves remarkable recognition accuracies of 98%and 97%under dim and bright adaptation conditions,respectively.This research offers a streamlined,versatile,and scalable approach for developing energy-efficient,highly integrated,and multi-dimensional imaging recognition capabilities in light-adaptive and polarization-sensitive bionic vision devices.展开更多
基金grateful to the National Key Research and Development Program of China(No.2024YFA1211400)the National Natural Science Foundation of China(Nos.U22A20138,52302162,and 52202183)the Guangdong Basic and Applied Basic Research Foundation(No.2023B1515120041).
文摘Simulating ambient light adaptability and polarization sensitivity of biological vision is paramount for developing intelligent optoelectronic devices with multi-dimensional perception capabilities.However,achieving both functionalities in semiconductor devices has historically necessitated complex architectures and high-voltage operation,posing significant challenges for bionic vision systems.Here,we present a light-adaptable and polarization-sensitive bionic vision utilizing a simple yet effective strategy of semiconductor-metal contact engineering in PdSe_(2)transistors.By exploiting the differential coupling strengths at diverse metal-semiconductor interfaces to modulate the dynamics of photogenerated carriers,the device achieves energy-efficient visual adaptive perception across a broad range of lighting conditions,from dim to bright,without the need for additional gate voltage.Furthermore,this transistor enables multi-dimensional perception of visual information through dynamic polarization angle changes and light intensity(dim/bright)detection,providing rich input features for intelligent recognition in complex scenarios.Capitalizing on the intrinsic anisotropy of PdSe_(2)and contact engineering,we have constructed a bionic light-adaptive visual neural network capable of perceiving and recognizing images in complex lighting environments.When enhanced by a residual-generating adversarial network,the system achieves remarkable recognition accuracies of 98%and 97%under dim and bright adaptation conditions,respectively.This research offers a streamlined,versatile,and scalable approach for developing energy-efficient,highly integrated,and multi-dimensional imaging recognition capabilities in light-adaptive and polarization-sensitive bionic vision devices.
