樱桃视频.app下载安装,久久久久精品国产三级男人的天堂

Monolayer WSe2 Triangles on c-cut Sapphire 返回列表頁

參考價: ￥ 6979.7

訂貨量: ≥1 片

具體成交價以合同協(xié)議為準(zhǔn)

產(chǎn)品型號

品牌2D Semiconductors

廠商性質(zhì)生產(chǎn)商

所在地泰州市

在線詢價加入對比查看聯(lián)系電話

更新時間：2024-06-03 19:13:05瀏覽次數(shù)：738次

聯(lián)系我時，請告知來自化工儀器網(wǎng)

供貨周期	現(xiàn)貨	應(yīng)用領(lǐng)域	環(huán)保,化工,能源,綜合

Isolated monolayer thickness WSe2 are grown onto c-cut (0001) sapphire substrates. This particular product contains monolayer thickness WSe2 triangular flakes randomly distributed across sapphire substrate. While some regions reach continuity with coalesced WSe2 triangles, this sample contains well-separated triangles for advanced spectroscopy, microscopy, and electronic measurements. Synthesized monolayer WSe2 triangles are highly luminescent and Raman spectroscopy studies also confirm the monolayer thickness.

Sample Properties.

Sample size	1cm x 1cm square shaped
Substrate type	(0001) c-cut sapphire
Coverage	Isolated and partially merged monolayer triangles
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) Identification. Well-separated WSe2 domains across c-cut sapphire

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

3) Smoothness. Atomically smooth surface with roughness < 0.22 nm.

4) Uniformity. Highly uniform surface morphology

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

6) Reliability. Repeatable Raman and photoluminescence response

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

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

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

Supporting datasets [for 100% Full area coverage on SiO2/Si]

Transmission electron images (TEM) acquired from CVD grown WSe2 (triangular) monolayers on sapphire confirming highly crystalline nature of monolayers

Room temperature photoluminescence spectroscopy (PL) and Raman spectroscopy (Raman) measurements performed on CVD grown WSe2 triangle monolayers 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 1.62 eV in agreement with the literature.