Flexo-photoelectronic effect in n-type/p-type two-dimensional semiconductors and a deriving light-stimulated artificial synapse

Abstract

Flexoelectricity and photoelectricity with their coupled effect (the so-called flexo-photoelectronic effect) is of increasing interests for electronics and optoelectronics in van der Waals layered semiconductors. However, the related device design...

Low-dimensional optoelectronic synaptic devices for neuromorphic vision sensors

“…In contrast, the three terminal devices have advantages in stability, repeatability, and synchronous operation despite their complex structure [122]. In this section, we summarize the latest advances in optoelectronic synaptic devices based on nanostructured low-dimensional materials from the perspectives of zero-dimensional (0D) [123][124][125][126][127][128], one-dimensional (1D) [129][130][131][132][133][134], 2D materials [135][136][137][138][139][140][141][142][143], and hybrid heterojunctions [66,82,113,[144][145][146][147][148][149][150][151][152][153] to demonstrate their unique advantages and characteristics. A concise summary of the critical performance metrics of low-dimensional material optoelectronic synaptic devices is provided in table 1.…”

Emulating Ebbinghaus forgetting behavior in a neuromorphic device based on 1D supramolecular nanofibres

“…24 Many others report such behavior in devices via trap-assisted processes that are mostly optically stimulated. [25][26][27][28][29][30][31] It is known that forgetting is also dependent on how information is acquired. 32 The information obtained through prolonged exposure or through rehearsals is well retained, whereas less rehearsed or less exposed information is forgotten faster.…”

Intrinsic piezoelectricity of 2D violet phosphorene

“…At the same time, 2D van der Waals materials lack dangling bonds on the surface, which lowers the surface energy and enables smaller device sizes. [7][8][9][10][11][12] In 2D van der Waals materials, due to its ability to make up for graphene's inherent flaw of having no band gap and having high charge mobility, 2D phosphorene has re-appeared as a research midpoint for phosphorus 2D materials. [13][14][15][16][17] Due to its direct bandgap break and superb mobility, substitute 2D layered black phosphorus (BP) is thought to be a very auspicious 2D semiconductor material.…”