NbSe2 Crystal

SKU:
BLK-NbSe2
Condition:
New
  • NbSe2 crystals
  • Raman spectrum of NbSe2 crystals
  • XRD data from NbSe2 crystals
$590.00
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Description

2H-phase niobium diselenide is a superconducting vdW crystal with charge density wave (CDW) and Weyl semimetal properties. It has been shown to exhibit superconducting behavior at low temperatures. 

 Materials Project NbSe2    C2DB material properties NbSe2

Sample size ~ centimeter sized crystals 
Material properties Charge density wave, Weyl semimetal, superconductor
Crystal structure 2H phase
Degree of exfoliation Easy exfoliation characteristics
Production method Flux zone (highest electronic grade) or CVT growth (more defected)
Other characteristics
  • Guaranteed electronic response
  • Flux zone guaranteed CDW and Weyl response
  • World's largest size crystals.

 Growth method matters> Flux zone or CVT growth method? Contamination of halides and point defects in layered crystals are well known cause for their reduced electronic mobility, reduced anisotropic response, poor e-h recombination, low-PL emission, and lower optical absorption. Flux zone technique is a halide free technique used for synthesizing truly semiconductor grade vdW crystals. This method distinguishes itself from chemical vapor transport (CVT) technique in the following regard: CVT is a quick (~2 weeks) growth method but exhibits poor crystalline quality and the defect concentration reaches to 1E11 to 1E12 cm-2 range. In contrast, flux method takes long (~3 months) growth time, but ensures slow crystallization for perfect atomic structuring, and impurity free crystal growth with defect concentration as low as 1E9 - 1E10 cm-2. During check out just state which type of growth process is preferred. Unless otherwise stated, 2Dsemiconductors ships Flux zone crystals as a default choice.  

 
XRD data collected from high quality NbSe2 crystals
 
 nbse2-xrd.png
Raman spectrum collected from NbSe2 single crystals showing defect free and highly crystalline nature of NbSe2
nbse2-raman.png
 
Recent work citing our crystals 

Plasmons in the van der Waals charge-density-wave material 2H-TaSe2
Nature Communications volume 12, Article number: 386 (2021)

Electrostatically Tunable Near-Infrared Plasmonic Resonances in Solution-Processed Atomically Thin NbSe2
Advanced Materials (2021) https://doi.org/10.1002/adma.202101950

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Additional Information

Elements:
Nb,Se
Element:
Niobium
Element:
Selenium
Formula:
NbSe2
Material class:
MX2
Material class:
Dichalcogen
Properties:
Superconductor
Properties:
Semimetal
Properties:
CDW
Growth method:
Flux
Growth method:
CVT
Doping:
Undoped
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