基于藍寶石襯底的全區(qū)域覆蓋的單層二硒化錸

簡要描述：This product contains full area coverage ReSe2 monolayers on c-cut sapphire substrates.

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更新時間：2024-06-04
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詳細介紹

This product contains full area coverage ReSe2 monolayers on c-cut sapphire substrates. Sample size measures 1cm in size and the entire sample surface contains monolayer thick ReSe2 sheet. Synthesized full area coverage monolayer ReSe2 is highly crystalline, some regions also display significant crystalline anisotropy.

Sample Properties.

Sample size	1cm x 1cm square shaped
Substrate type	Sapphire c-cut (0001)
Coverage	Full monolayer coverage
Electrical properties	1.45 eV Anisotropic Semiconductor (Indirect Bandgap)
Crystal structure	Distorted Tetragonal Phase (1T’)
Unit cell parameters	a = 0.656 nm, b = 0.672 nm, c = 0.674 nm, α = 91.74°, β = 105°, γ = 119°
Production method	Atmospheric Pressure Chemical Vapor Deposition (APCVD)
Characterization methods	Raman, angle resolved Raman spectroscopy, photoluminescence, absorption spectroscopy TEM, EDS

Specifications

ReSe2 monolayers do not contain intentional dopants or defects. However, our technical staff can produce defected ReSe2 using α-bombardment technique.

Supporting datasets [for 100% Full area ReSe2 monolayers on c-cut Sapphire]

Transmission electron images (TEM) and angle resolved Raman spectroscopy measurements acquired from CVD grown full area coverage ReSe2 monolayers on c-cut sapphire confirming crystalline anisotropy

Energy dispersive X-ray spectroscopy (EDX) characterization on CVD grown full area coverage monolayer ReSe2 on c-cut sapphire

Raman spectroscopy measurement confirm monolayer nature of the CVD grown samples. Differential reflectance measurements clearly show band gap at 1.45 eV for monolayer ReS2 consistent with the existing literature values. PL spectrum does not show any PL signal due to indirect band nature.

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