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      基于藍寶石襯底的全區(qū)域覆蓋的單層二硒化鎢

      簡要描述:This product contains full area coverage WSe2 monolayers on c-cut sapphire substrates.

      • 產品型號:
      • 廠商性質:生產廠家
      • 更新時間:2025-05-08
      • 訪  問  量:1333

      詳細介紹

      This product contains full area coverage WSe2 monolayers on c-cut sapphire substrates. Sample size measures 1cm in size and the entire sample surface contains monolayer thick WSe2 sheet. Synthesized full area coverage monolayer WSe2 is highly luminescent and Raman spectroscopy studies also confirm the monolayer thickness (please see the technical specifications)

       

       

      Sample Properties.

      Sample size

      1cm x 1cm square shaped

      Substrate type

      Sapphire c-cut (0001)

      Coverage

      Full monolayer coverage

      Electrical properties

             1.62 eV Direct Bandgap Semiconductor

      Crystal structure

      Hexagonal Phase

      Unit cell parameters

      a = b = 0.327 nm, c = 1.295 nm, α = β = 90°, γ = 120°

      Production method

      Low pressure Chemical Vapor Deposition (LPCVD)

      Characterization methods

      Raman, photoluminescence, TEM, EDS

       

       

      Specifications

      1)     Full coverage 100% monolayer WSe2 uniformly covered across c-cut sapphire

      2)     One centimeter in size. Larger sizes up to 2-inch wafer-scale available upon requests.

      3)     Atomically smooth surface with roughness < 0.15 nm.

      4)     Highly uniform surface morphology. WSe2 monolayers uniformly cover across the sample.

      5)     99.9995% purity as determined by nano-SIMS measurements

      6)    Repeatable Raman and photoluminescence response

      7)     High crystalline quality, Raman response, and photoluminescence emission comparable to single crystalline monolayer flakes.

      8)     c-cut Sapphire but our research and development team can transfer WSe2 monolayers onto variety of substrates including PET, quartz, and SiO2/Si without significant compromisation of material quality.

      9)     WSe2 monolayers do not contain intentional dopants or defects. However, our technical staff can produce defected WSe2 using α-bombardment technique.

       

      Supporting datasets [Full area coverage monolayer WSe2 on c-cut Sapphire]

       

      Transmission electron images (TEM) acquired from CVD grown full area coverage WSe2 monolayers on c-cut sapphire confirming highly crystalline nature of monolayers

       

      Room temperature photoluminescence spectroscopy (PL) and Raman spectroscopy (Raman) measurements performed on CVD grown full area coverage monolayer WSe2 on c-cut sapphire. Raman spectroscopy measurement confirm monolayer nature of the CVD grown samples and PL spectrum display sharp and bright PL peak located at 1.67 eV in agreement with the literature.

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      聯系我們

      上海巨納科技有限公司 公司地址:上海市虹口區(qū)寶山路778號海倫國際大廈5樓   技術支持:化工儀器網
      • 聯系人:袁文軍
      • QQ:494474517
      • 公司座機:86-021-56830191
      • 郵箱:yuanwenjun@sunano.com.cn

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