Oxyhalide precursors

US11919780B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-11919780-B2
Application numberUS-202016923899-A
CountryUS
Kind codeB2
Filing dateJul 8, 2020
Priority dateJul 9, 2019
Publication dateMar 5, 2024
Grant dateMar 5, 2024

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  1. Title

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  2. Abstract

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  3. Assignees and inventors

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  4. Key dates

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  5. First independent claim

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  7. Citations and related patents

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Abstract

Official abstract text for this publication.

The invention provides a process for preparing molybdenum and tungsten oxyhalide compounds which are useful in the deposition of molybdenum and tungsten containing films on various surfaces of microelectronic devices. In the process of the invention, a molybdenum or tungsten trioxide is heated in either a solid state medium or in a melt-phase reaction comprising a eutectic blend comprising alkaline and/or alkaline earth metal salts. The molybdenum or tungsten oxyhalides thus formed may be isolated as a vapor and crystallized to provide highly pure precursor compounds such as MoO 2 Cl 2 .

First claim

Opening claim text (preview).

The invention claimed is: 1. A compound having a formula MoO 2 Cl 2 in crystalline form and orthorhombic crystal system and unit cell dimensions of about a=13.552 Å α=90° b=5.456 Å β=90° c=5.508 Å γ=90°. 2. The compound of claim 1 , which exhibits a powder X-ray diffraction (XRD) pattern with one or more peaks at 12.94, 23.64, 26.10, 39.50, and/or 40.28±0.04 degrees 2-theta. 3. The compound of claim 1 , which has a powder X-ray diffraction (XRD) pattern comprises peak at about 6.776Å and about 3.7268Å.

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What does patent US11919780B2 cover?
The invention provides a process for preparing molybdenum and tungsten oxyhalide compounds which are useful in the deposition of molybdenum and tungsten containing films on various surfaces of microelectronic devices. In the process of the invention, a molybdenum or tungsten trioxide is heated in either a solid state medium or in a melt-phase reaction comprising a eutectic blend comprising alka…
Who is the assignee on this patent?
Entegris Inc
What technology area does this patent fall under?
Primary CPC classification C23C16/08. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Tue Mar 05 2024 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).