MBE WSe2 MBE WSe2 MBE WSe2 Comparison between MBE, CVD, and MOCVD Comparison between MBE, CVD, and MOCVD PL spectrum from MBE WSe2 samples Raman spectrum from MBE WSe2 samples

2D MBE WSe2

$670.00

World's first molecular beam epitaxy (MBE) grown WSe2 monolayers. MBE is an epitaxial method for single-crystal quality film deposition which offers high crystallinity and reduced defect density compared to chemical vapor deposition (CVD) or metal-organic chemical vapor deposition (MOCVD) techniques (see HRTEM images below). MBE growth of WSe2 monolayers take place in a MBE chamber at a base pressure of 8E-9 Torr and deposition rate is extremely slow (5-100 atoms per second) to reach structural perfection. Typical MBE growth produces monolayer thick WSe2 isolated triangles on double-side polished c-cut sapphire. Currently, MBE WSe2 is only offered on sapphire substrates but in the near future our MBE substrates will also include mica, graphite, and gold.   

Comparison between MBE, CVD, and MOCVD

comparison-mbe-cvd-mocvd-ii.png

TEM comparison between MBE, CVD, and MOCVD

mbemos2sapp.png

Optical images collected from MBE WSe2

 mbe-wse2-optical-image.png

MBE WSe2 suspended on TEM grid

mbe-wse2-tem-grid.png

 PL spectrum collected from MBE WSe2

mbe-wse2-pl-spectrum.png

 Raman spectrum collected from MBE WSe2

mbe-wse2-raman-spectrum.png

 

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  • Description

    World's first molecular beam epitaxy (MBE) grown WSe2 monolayers. MBE is an epitaxial method for single-crystal quality film deposition which offers high crystallinity and reduced defect density compared to chemical vapor deposition (CVD) or metal-organic chemical vapor deposition (MOCVD) techniques (see HRTEM images below). MBE growth of WSe2 monolayers take place in a MBE chamber at a base pressure of 8E-9 Torr and deposition rate is extremely slow (5-100 atoms per second) to reach structural perfection. Typical MBE growth produces monolayer thick WSe2 isolated triangles on double-side polished c-cut sapphire. Currently, MBE WSe2 is only offered on sapphire substrates but in the near future our MBE substrates will also include mica, graphite, and gold.   

    Comparison between MBE, CVD, and MOCVD

    comparison-mbe-cvd-mocvd-ii.png

    TEM comparison between MBE, CVD, and MOCVD

    mbemos2sapp.png

    Optical images collected from MBE WSe2

     mbe-wse2-optical-image.png

    MBE WSe2 suspended on TEM grid

    mbe-wse2-tem-grid.png

     PL spectrum collected from MBE WSe2

    mbe-wse2-pl-spectrum.png

     Raman spectrum collected from MBE WSe2

    mbe-wse2-raman-spectrum.png