國產亞洲曝歐美不卡精品,国产厕所在线一区二区,亚洲免费中文不卡高清有码

基于藍(lán)寶石襯底的三角形單層二硫化鎢返回列表頁

參考價(jià): ￥ 6979.7

訂貨量: ≥1 片

具體成交價(jià)以合同協(xié)議為準(zhǔn)

產(chǎn)品型號(hào)

品牌2D Semiconductors

廠商性質(zhì)生產(chǎn)商

所在地泰州市

在線詢價(jià) 加入對(duì)比查看聯(lián)系電話

更新時(shí)間：2024-06-03 19:14:53瀏覽次數(shù)：765次

聯(lián)系我時(shí)，請(qǐng)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 WS2 are grown onto c-cut (0001) sapphire substrates. This particular product contains monolayer thickness WS2 triangular flakes randomly distributed across sapphire substrate. While some regions reach continuity with coalesced WS2 triangles, this sample contains well-separated triangles for advanced spectroscopy, microscopy, and electronic measurements. Synthesized monolayer WS2 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 triangl
Electrical properties	2.0 eV Direct Bandgap Semiconductor
Crystal structure	Hexagonal Phase
Unit cell parameters	a = b = 0.312 nm, c = 1.230 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 WS2 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 < 0.2 nm.

4) Uniformity. Highly uniform surface morphology. WS2 triangles are scattered across sample.

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 WS2 triangles onto variety of substrates including PET, quartz, and SiO2/Si without significant compromising of material quality.

9) Defect profile. WS2 monolayer triangles do not contain intentional dopants or defects. However, our technical staff can produce defected WS2 using α-bombardment technique.

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

Transmission electron images (TEM) acquired from CVD grown WS2 (triangular) monolayers on c-cut sapphire confirming highly crystalline nature of monolayers

Energy dispersive X-ray spectroscopy (EDX) characterization on CVD grown full area coverage WS2 on sapphire confirming W:S 1:2 ratios

Room temperature photoluminescence spectroscopy (PL) and Raman spectroscopy (Raman) measurements performed on CVD grown full area coverage MoS2 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 1.85 eV in agreement with the literature.