Tunable and Predetermined Bandgap Emissions in Alloyed ZnS_xSe_1–x Nanowires

Abstract

Photoluminescence measurements show that the tunable bandgap emissions of the alloyed ZnSxSe1–x nanowires shift continuously from 370 nm to 463 nm. According to the experimental results, predetermined bandgap emissions can be obtained via synthesizing alloyed ZnSxSe1–x nanowires with the corresponding composition x.

Ternary SnS2–xSex Alloys Nanosheets and Nanosheet Assemblies with Tunable Chemical Compositions and Band Gaps for Photodetector Applications

“…In this work, y equals to x /2. The best fit yields b  = 0.03, which was found to be in the range of 0 to 0.6530. And the small b value demonstrates that SnS 2 and SnSe 2 have a good miscibility2438.…”

“…1b), indicating the increase of lattice constants and formation of solid solution rather than the mechanical mixture of two pure phases2728. The continuous peak shifting (lattice expanding) of ternary alloys might rule out the phase separation or separated nucleation of SnS 2 or SnSe 2 nanomaterials2930. As shown in Supplementary Fig.…”

ZnS nanostructures: From synthesis to applications

“…The structures exhibited strong visible PL from 712 to 463 nm as a nonlinear function of the compositions and could serve as important integrated full-color display elements in nanotechnological applications. Fei and co-workers achieved ZnS x Se 1Àx (x = 0.80, 0.71, 0.60, 0.49, 0.35, and 0.21) nanowires via thermal evaporation of the mixtures of ZnS and ZnSe powders at 1100°C.Various compositions could be easily obtained by changing the mole ratio of ZnS and ZnSe in the source material[230]. The diameters of the ZnS x Se 1Àx nanowires with different compositions x were mostly distributed in the range of 100-200 nm, and the lengths were up to several tens of micrometers(Fig.…”

Synthesis and Optical Properties of Tetrapod‐Like ZnSSe Alloy Nanostructures

“…However, it is to our best knowledge that few reports are available on 1D ZnSSe nanostructures, except for a very recent one by Wang et al, where nanowires were obtained. [2] In this work, we report the synthesis of tetrapodlike ZnSSe alloy nanostructures (T-ZnSSe) of different compositions by catalyst-free chemical vapor deposition (CVD) and the studies of their composition-dependent Raman scattering and cathodoluminescence (CL). Novel tetrapod-like structures, constructed from 1D nanorods, have been observed in almost all the binary II-VI compounds, [3][4][5][6][7][8][9][10][11][12] but have not been in their ternary alloys.…”