Limits...
High White Light Photosensitivity of SnSe Nanoplate-Graphene Nanocomposites

View Article: PubMed Central - PubMed

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.

No MeSH data available.


a The low-magnification TEM image of the representative SnSe nanoplate-graphene nanocomposites; b, c the high-magnification TEM image and SAED pattern of the representative SnSe nanoplate of the rectangular of a, respectively
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC5383919&req=5

Fig3: a The low-magnification TEM image of the representative SnSe nanoplate-graphene nanocomposites; b, c the high-magnification TEM image and SAED pattern of the representative SnSe nanoplate of the rectangular of a, respectively

Mentions: In order to obtain the detailed crystal structure and crystal quality of the as-synthesized products, the SnSe nanoplate-graphene nanocomposites were characterized by transmission electron microscopy (TEM), HRTEM, and the selected-area electron diffraction (SAED). As shown in Fig. 3a, the graphene lay flat on the TEM grids, and the SnSe nanoplates dispersed uniformly on the graphene sheet, which are consistent with the SEM results illustrated above. The SnSe nanoplates and graphene are relatively stable against the high energy electron beam irradiation in a TEM. In addition, the HRTEM image of the square area masked in Fig. 3a shows clear orthogonal lattice fringes with both lattice spacing of ~0.30 nm. The intersection angle of the lattice fringes is approximated 94° (Fig. 3b), which is in good agreement with the angle between the planes of (011) and (0-11) of the orthorhombic SnSe crystal structure [22]. Furthermore, the SAED data (Fig. 3c), taken from the individual SnSe nanoplate, exhibits a clear orthogonally symmetric spot pattern, indicating the single-crystal nature of the sample. Therefore, we can conclude that the as-synthesized products show high quality, in which the SnSe nanoplate can be well anchored to and dispersed on the graphene sheet.Fig. 3


High White Light Photosensitivity of SnSe Nanoplate-Graphene Nanocomposites
a The low-magnification TEM image of the representative SnSe nanoplate-graphene nanocomposites; b, c the high-magnification TEM image and SAED pattern of the representative SnSe nanoplate of the rectangular of a, respectively
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC5383919&req=5

Fig3: a The low-magnification TEM image of the representative SnSe nanoplate-graphene nanocomposites; b, c the high-magnification TEM image and SAED pattern of the representative SnSe nanoplate of the rectangular of a, respectively
Mentions: In order to obtain the detailed crystal structure and crystal quality of the as-synthesized products, the SnSe nanoplate-graphene nanocomposites were characterized by transmission electron microscopy (TEM), HRTEM, and the selected-area electron diffraction (SAED). As shown in Fig. 3a, the graphene lay flat on the TEM grids, and the SnSe nanoplates dispersed uniformly on the graphene sheet, which are consistent with the SEM results illustrated above. The SnSe nanoplates and graphene are relatively stable against the high energy electron beam irradiation in a TEM. In addition, the HRTEM image of the square area masked in Fig. 3a shows clear orthogonal lattice fringes with both lattice spacing of ~0.30 nm. The intersection angle of the lattice fringes is approximated 94° (Fig. 3b), which is in good agreement with the angle between the planes of (011) and (0-11) of the orthorhombic SnSe crystal structure [22]. Furthermore, the SAED data (Fig. 3c), taken from the individual SnSe nanoplate, exhibits a clear orthogonally symmetric spot pattern, indicating the single-crystal nature of the sample. Therefore, we can conclude that the as-synthesized products show high quality, in which the SnSe nanoplate can be well anchored to and dispersed on the graphene sheet.Fig. 3

View Article: PubMed Central - PubMed

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.

No MeSH data available.