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基于藍(lán)寶石襯底的全區(qū)域覆蓋的單層二硒化錸

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簡(jiǎn)要描述：This product contains full area coverage ReSe2 monolayers on c-cut sapphire substrates.

詳細(xì)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

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

 

 

 

Supporting datasets [for 99% 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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