High White Light Photosensitivity of SnSe Nanoplate-Graphene Nanocomposites

Abstract

The multi-functional nanomaterial constructed with more than one type of materials has gained a great attention due to its promising application. Here, a high white light photodetector prototype established with two-dimensional material (2D) and 2D nanocomposites has been fabricated. The 2D-2D nanocomposites were synthesized with SnSe nanoplate and graphene. The device shows a linear I-V characterization behavior in the dark and the resistance dramatically decreases under the white light. Furthermore, the photosensitivity of the device is as large as 1110% with a rapid response time, which is much higher than pristine SnSe nanostructure reported. The results shown here may provide a valuable guidance to design and fabricate the photodetector based on the 2D-2D nanocomposites even beyond the SnSe nanoplate-graphene nanocomposites.

Tin-selenide as a futuristic material: properties and applications

“… 158 Under white light illumination, SnSe nanoplate and graphene composites showed very high photosensitivity (1110%) and short response time (∼1 s). 159 The SnSe film grown on Si substrate by vapor deposition and dispersed with graphene oxide quantum dots showed improved response time and photocurrent than the SnSe film in a larger spectrum. 160 Self-powered photodetection was demonstrated in the SnSe/Si heterostructure device, with very high detection and ultrafast response in μs range.…”

Liquid‐Exfoliated 2D Materials for Optoelectronic Applications

“…Reproduced with permission. [ 124 ] Copyright 2017, Springer Nature. b) Position‐sensitive detector (PSD) based on an asymmetric TiO 2 /MoS 2 /rGO hybrid photodetector for NIR detection.…”

“…This process creates a lateral electric field upon localized illumination, giving rise to photocurrent. [124] Copyright 2017, Springer Nature. b) Position-sensitive detector (PSD) based on an asymmetric TiO 2 /MoS 2 /rGO hybrid photodetector for NIR detection.…”

“…a) Current-voltage characteristic of the rGO/SnSe hybrid photodetector in dark and under white light illumination. Reproduced with permission [124]. Copyright 2017, Springer Nature.…”

Chern-Simons Current of Left and Right Chiral Superspace in Graphene Wormhole

“…The role of supersymmetry [34] is actively searched in chiral symmetry, breaking the graphene superconductor condition [35] of free electron transport through the graphene wormhole [36]. The graphene wormhole connects two graphene sheets [37] as D-brane and anti-D-brane [38] of a superconductor with the Chern-Simons supercurrent in D-brane model [20]. In this situation, we can realize the Chern-Simons manifold as an Einstein-Rosen bridge between the child manifolds of the graphene.…”