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2D Semiconductors

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Monolayer WS2 Triangles on c-cut Sapphire

$490.00

Monolayer WS2 Triangles on c-cut Sapphire

$490.00
SKU:
MLWS2TriSapp

Product Description

Isolated monolayer thickness WS2 are grown onto c-cut (0001) sapphire substrates.  This particular product contains monolayer thickness WS2 triangular flakes randomly distributed across sapphire substrate. While some regions reach continuity with coalesced WS2 triangles, this sample contains well-separated triangles for advanced spectroscopy, microscopy, and electronic measurements. Synthesized monolayer WS2 triangles are highly luminescent and Raman spectroscopy studies also confirm the monolayer thickness. 

Sample Properties

Sample size 1cm x 1cm square shaped
Substrate type (0001) c-cut sapphire
Coverage Isolated and partially merged monolayer triangles
Electrical properties 2.0 eV Direct Bandgap Semiconductor
Crystal structure Hexagonal Phase
Unit cell parameters a = b = 0.312 nm, c = 1.230 nm, α = β = 90, γ = 120°
Production method Low pressure Chemical Vapor Deposition (LPCVD)
Characterization methods Raman, photoluminescence, TEM, EDS

 

Specification.

  • Identification. Well-separated WS2 domains across c-cut sapphire
  • Physical dimensions. one centimeter in size. Larger sizes up to 2-inch wafer-scale available upon requests.
  • Smoothness. Atomically smooth surface with roughness < 0.2 nm.
  • Uniformity. Highly uniform surface morphology. WS2 triangles are scattered across sample
  • Purity. 99.9995% purity as determined by nano-SIMS measurements
  • Reliability. Repeatable Raman and photoluminescence response
  • Crystallinity. High crystalline quality, Raman response, and photoluminescence emission comparable to single crystalline monolayer flakes.
  • Substrate. c-cut Sapphire but our research and development team can transfer WS2 triangles onto variety of substrates including PET, quartz, and SiO2/Si without significant compromising of material quality.
  • Support. 2Dsemiconductors USA is an American owned, regulated, and operated company. Our customers are well-protected by international as well as strict American customer laws and regulations. We give full technical support and guarantee your satisfaction with our well-established customer
  • Defect profile. WS2 monolayer triangles do not contain intentional dopants or defects. However, our technical staff can produce defected WS2 using a-bombardment technique.

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