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725544

Sigma-Aldrich

Tetrakis(ethylmethylamid)hafnium(IV)

packaged for use in deposition systems

Synonym(e):

TEMAH, Tetrakis-(ethylmethylamino)-hafnium(IV)

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10 G
1.270,00 €

1.270,00 €


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10 G
1.270,00 €

About This Item

Lineare Formel:
[(CH3)(C2H5)N]4Hf
CAS-Nummer:
Molekulargewicht:
410.90
MDL-Nummer:
UNSPSC-Code:
12352103
PubChem Substanz-ID:
NACRES:
NA.23

1.270,00 €


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Qualitätsniveau

Form

liquid

Eignung der Reaktion

core: hafnium
reagent type: catalyst

bp

78 °C/0.01 mmHg (lit.)

mp (Schmelzpunkt)

<-50 °C

Dichte

1.324 g/mL at 25 °C (lit.)

Lagertemp.

2-8°C

SMILES String

CCN(C)[Hf](N(C)CC)(N(C)CC)N(C)CC

InChI

1S/4C3H8N.Hf/c4*1-3-4-2;/h4*3H2,1-2H3;/q4*-1;+4

InChIKey

NPEOKFBCHNGLJD-UHFFFAOYSA-N

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Allgemeine Beschreibung

Tetrakis(ethylmethylamido)hafnium(IV) (TEMAH) is a colorlessliquid, which freezes at -50 °C and boils around 78 °C at 0.1 Torr. It is air-and water-sensitive.

Anwendung

TEMAH is used as a precursor for atomic layer deposition(ALD) of conformal thin films of hafnium oxide (HfO2) and hafnium zirconium oxide (Hf1-xZrxO2), [1] which are used as dielectric films in semiconductor fabrication because of their high dielectric constants.

TEMAH is well-suited for ALD because its adsorption is self-limiting on a number of substrates including glass, indium-tin oxide(ITO), Si(100), and two-dimensional materials like MoS2.[2][3] TEMAH also conveniently reacts with either water or ozone as the oxygen-source in the ALD process.

Leistungsmerkmale und Vorteile

This TEMAH is packaged in a Swagelok stainless-steeldeposition system convenient for connecting to ALD systems.

  • Steel cylinder connected to 316 stainless steelball-valve
  • 1/4 inch male Swagelok VCR connections

Signalwort

Danger

Gefahreneinstufungen

Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B - STOT SE 3 - Water-react 1

Zielorgane

Respiratory system

Zusätzliche Gefahrenhinweise

Lagerklassenschlüssel

4.3 - Hazardous materials which set free flammable gases upon contact with water

WGK

WGK 3

Flammpunkt (°F)

51.8 °F - closed cup

Flammpunkt (°C)

11 °C - closed cup


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Die Dokumentenbibliothek aufrufen

Atomic Layer Deposition of Hafnium Dioxide Films from Hafnium Tetrakis(ethylmethylamide) and Water.
Kukli K, et al.
Chem. Vap. Deposition, 199-204 (2002)
Martin Rose et al.
ACS applied materials & interfaces, 2(2), 347-350 (2010-04-02)
The mechanisms of technologically important atomic layer deposition (ALD) processes, trimethylaluminium (TMA)/ozone and tetrakis(ethylmethylamino)hafnium (TEMAH)/ozone, for the growth of Al(2)O(3) and HfO(2) thin films are studied in situ by a quadrupole mass spectrometer coupled with a 300 mm ALD reactor.
Jaehyun Yang et al.
ACS applied materials & interfaces, 5(11), 4739-4744 (2013-05-21)
We report on the effect of oxygen plasma treatment of two-dimensional multilayer MoS2 crystals on the subsequent growth of Al2O3 and HfO2 films, which were formed by atomic layer deposition (ALD) using trimethylaluminum and tetrakis-(ethylmethylamino)hafnium metal precursors, respectively, with water
Luqi Tu et al.
Nature communications, 11(1), 101-101 (2020-01-05)
Sensitive photodetection is crucial for modern optoelectronic technology. Two-dimensional molybdenum disulfide (MoS2) with unique crystal structure, and extraordinary electrical and optical properties is a promising candidate for ultrasensitive photodetection. Previously reported methods to improve the performance of MoS2 photodetectors have focused

Artikel

Atomic Layer Deposition (ALD) technology ensures uniform coating on complex 3D surfaces with precise chemisorption cycles.

Nanocomposite Coatings with Tunable Properties Prepared by Atomic Layer Deposition

High Purity Metalorganic Precursors for CPV Device Fabrication

The properties of many devices are limited by the intrinsic properties of the materials that compose them.

Fragen

  1. What is the Department of Transportation shipping information for this product?

    1 Antwort
    1. Transportation information can be found in Section 14 of the product's (M)SDS.To access the shipping information for this material, use the link on the product detail page for the product.

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