2'' Wafer CVD Monolayers or Few-Layers

Description

Description 2-inch full-area coverage of MoS2, MoSe2, WS2, WSe2 monolayers on a 2-inch size c-cut sapphire substrate. CVD TMDs are all highly luminescent, and Raman spectroscopy studies have also confirmed the monolayer thickness. Our samples are always highly luminescent, highly crystalline and free of carbon contamination layers.

Features And Benefits

Features And Benefits Full Coverage 100% monolayer uniform coverage on c-cut sapphire
The world's largest 2" diameter sapphire monolayer.
Atomic smooth surface.
Highly uniform surface morphology. The TMD monolayer uniformly covers the entire sample.
Reproducible Raman and Photoluminescence Responses
High crystalline quality, Raman response and photoluminescence emission comparable to single wafers.
TMDs monolayers do not contain intentional dopants or defects. Our technicians can produce defective TMDs using bombing techniques.

Specifications

Purity	99.9999% confirmed purity
Characterization Methods	XRD, XPS, AES, SIM, and HRTEM
Coverage	Full Coverage Monolayer MoS2, WS2, MoSe2, and WSe2
Crystal Structure And Type	Hexagonal Phase
Dimension	2''
Electrical Property	Direct Bandgap Excitonic Semiconductor
Layers	single layer
Packaging	1 piece/pack
Production Method	We synthesize these monolayers using chemical vapor deposition (CVD) using the highest purity (6N) gas and precursors in semiconductor-grade equipment to produce crystalline and large domain size samples (1-50um). This is different from the commonly used MOCVD process, where the defects are very, very large and the domain size is small (10nm-500nm).
Storage Conditions	Room temperature and dry
Substrate	(0001) c-cut sapphire
Type	Synthetic
Unit Cell Parameters	Depends on the type selected