Porous Metal-organic-framework/ReS 2 Heterojunction Phototransistor for Polarization-sensitive Visual Adaptation Emulation.

Visual adaptation allows organisms to accurately perceive the external world even in dramatically changing environments, from dim starlight to bright sunlight. In particular, polarization-sensitive visual adaptation can effectively process the polarized visual information that is ubiquitous in nature. However, such an intriguing characteristic still remains to be a great challenge in the semiconductor device. Herein, a novel porous metal-organic-framework phototransistor with anisotropic-ReS -based heterojunction is demonstrated for the polarization-sensitive visual adaptation emulation. The device exhibits the intriguing polarized sensitivity and adaptive ability due to its strong anisotropic and trapping-detrapping characteristics, respectively. A series of polarization-sensitive neuromorphic behaviors like polarization-perceptual excitatory postsynaptic current, multimode adjustable dichroic ratio, and reconfigurable sensory adaption, are experimentally demonstrated through this porous heterojunction phototransistor. More importantly, with the polarization-electricity cooperation strategy, the advanced polarization-sensitive visual adaptation with strong bottom-gate control and environment dependence is successfully realized for the first time. These results represent a significant step toward the new generation of intelligent visual perception systems in autonomous navigation and human-machine interaction, etc. This article is protected by copyright. All rights reserved.