Neuromorphic vision hardware,embedded with multiple functions,has recently emerged as a potent platform for machine vision.To realize memory in sensor functions,reconfigurable and non-volatile manipulation of photocar...Neuromorphic vision hardware,embedded with multiple functions,has recently emerged as a potent platform for machine vision.To realize memory in sensor functions,reconfigurable and non-volatile manipulation of photocarriers is highly desirable.However,previous technologies bear mechanism challenges,such as the ambiguous optoelectronic memory mechanism and high potential barrier,resulting in a limited response speed and a high operating voltage.Here,for the first time,we propose a critical band-to-band tunnelling(BTBT)based device that combines sensing,integration and memory functions.The nearly infinitesimal barrier facilitates the tunnelling process,resulting in a broadband application range(94o nm).Furthermore,the observation of dual negative differential resistance(NDR)points confirms that the critical BTBT of photocarriers contributes to the sub-microsecond photomemory speed.Since the photomemory speed,with no motion blur,is important for motion detection,the critical BTBT memory is expected to enable moving target tracking and recognition,underscoring its superiority in intelligentperception.展开更多
基金supported by the National Key Research and Development Programme of China(Grant No.2023YFB3611400)National Natural Science Foundation of China(Grant Nos.62327812,62361136587,62422410,62205360 and 62304229)+2 种基金Shanghai Rising-Star Programme(Grant No.24QA2711000)CAS Project for Young Scientists in Basic Research(Grant No.YSBR-113)CAS Pioneer Hundred Talents Program.
文摘Neuromorphic vision hardware,embedded with multiple functions,has recently emerged as a potent platform for machine vision.To realize memory in sensor functions,reconfigurable and non-volatile manipulation of photocarriers is highly desirable.However,previous technologies bear mechanism challenges,such as the ambiguous optoelectronic memory mechanism and high potential barrier,resulting in a limited response speed and a high operating voltage.Here,for the first time,we propose a critical band-to-band tunnelling(BTBT)based device that combines sensing,integration and memory functions.The nearly infinitesimal barrier facilitates the tunnelling process,resulting in a broadband application range(94o nm).Furthermore,the observation of dual negative differential resistance(NDR)points confirms that the critical BTBT of photocarriers contributes to the sub-microsecond photomemory speed.Since the photomemory speed,with no motion blur,is important for motion detection,the critical BTBT memory is expected to enable moving target tracking and recognition,underscoring its superiority in intelligentperception.
