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Title:
COMPOSITE TUNGSTEN OXIDE FILM AND METHOD FOR PRODUCING SAME, AND FILM-FORMED SUBSTRATE AND ARTICLE EACH PROVIDED WITH SAID FILM
Document Type and Number:
WIPO Patent Application WO/2019/216134
Kind Code:
A1
Abstract:
Provided are: a composite tungsten film which has both of transparency in a visible light region and infrared ray absorbability in an infrared ray region, also has substantial radio wave permeability, and also has a function to absorb light to block the light, a function to absorb light to generate heat and a function to absorb light to emit electrons as well as permeability for light having a wavelength of 700 to 1200 nm; and a method for producing the composite tungsten film. Also provided is a film-formed substrate or article utilizing one function or multiple functions among the above-mentioned functions. A composite tungsten oxide film of which the main component has a chemical composition represented by the general formula: MxWyOz (wherein M represents at least one element selected from an alkali metal, an alkaline earth metal, Fe, In, Tl and Sn; W represents tungsten; and O represents oxygen), wherein the formulae: 0.001 ≤ x/y ≤ 1 and 2.2 ≤ z/y ≤ 3.0 are satisfied, substantially no organic substance component is contained, the sheet resistance is 105 Ω/□ or more, the permeability at a wavelength of 550 nm is 50% or more, the permeability at a wavelength of 1400 nm is 30% or less, the absorptance at a wavelength of 1400 nm is 35% or more, and the absorptance at a wavelength of 800 nm relative to the absorptance at a wavelength of 1400 nm is 80% or less.

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Inventors:
SATO KEIICHI (JP)
ANDO ISAO (JP)
Application Number:
PCT/JP2019/016401
Publication Date:
November 14, 2019
Filing Date:
April 17, 2019
Export Citation:
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Assignee:
SUMITOMO METAL MINING CO (JP)
International Classes:
C23C14/06; C01G41/00; C03C17/245; C23C14/34; C23C14/58
Domestic Patent References:
WO2006103871A12006-10-05
WO2017002763A12017-01-05
WO2019058737A12019-03-28
WO2006049025A12006-05-11
WO2006100799A12006-09-28
Foreign References:
CN104006560A2014-08-27
JP2010215451A2010-09-30
JP2018090939A2018-06-14
JPH05113085A1993-05-07
JP4096205B22008-06-04
JP2006096656A2006-04-13
JP2002020142A2002-01-23
JPH0812378A1996-01-16
JP2011503274A2011-01-27
JP2013025949A2013-02-04
JP2015117353A2015-06-25
JP2015527700A2015-09-17
JP2016528343A2016-09-15
JP2012021066A2012-02-02
JP2018026586A2018-02-15
JP2017092210A2017-05-25
Attorney, Agent or Firm:
KOIKE Akira et al. (JP)
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