Preparation, Formation Mechanism, and Photoresponse Properties of GeSe Microtubes with a Rectangular Cross Section

Abstract

GeSe single‐crystalline microtubes with a rectangular cross section have been fabricated through a facile solution approach. The as‐prepared GeSe microtubes have diameters in the range of 1–2 μm and wall thicknesses of approximately 100–200 nm. Crystal growth along the [010] direction is preferable for the GeSe microtubes. The formation of GeSe microtubes is proposed to originate from an etching effect of the solvent oleylamine. A clear photoresponsive behavior has been found for the as‐synthesized GeSe microtubes. The products were characterized by using powder XRD, energy‐dispersive X‐ray spectroscopy, TEM, SEM, and UV/Vis spectrophotometry.

GeSe thin-film solar cells

“…However, considering that many nanostructures of GeSe have been synthesized through the solution method, we think that solution-processed GeSe thin films will be achievable in the near future, thus providing a broad space for the in-depth investigation of GeSe. [82][83][84][85][86] 4. GeSe-based solar cells…”

Sodium storage performance of FeSb 2 @C composite

“…7,8 Sb-related anode materials have attracted much attention recently due to their low redox potentials and large sodium storage capacities. [9][10][11][12][13][14] FeSb 2 is one of the anode family members based on Sb. Theoretically, it possesses a capacity 537 mAh/g.…”

Visible‐NIR Photodetectors Based on Low‐Dimensional GeSe Micro‐Crystals: Designed Morphology and Improved Photoresponsivity

“…This is because gate voltage of the phototransistor was favorite to a high responsivity, but the concentration of defects and impurities were still not low enough to get a fast photoresponse. Some micro‐size 1D GeSe belts or tubes and 2D GeSe sheets have been synthesized by different solution synthesis methods . Xue et al.…”

“…Some micro-size 1D GeSe belts or tubes and 2D GeSe sheets have been synthesized by different solution synthesis methods. [22][23][24][25][26] Xue et al synthesized colloidal nanosheets by heating GeI 4 , diphenyl diselenide and hexadecylamine mixture and discovered its anisotropic photoresponse properties. [23] Dimitri D et al reported a solution-based seedless growth strategy and the single crystal colloidal GeSe nanobelts which were synthesized by hot-inject method with GeI 4 and TOP-Se.…”