Patent US5793092A successfully refreshed from Google Patents.
US5793092A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermoelectric radiation detectors based on perovskite doped films and superlattices
Assignee: Max-Planck-Gesellschaft zur Förderung der Wissenschaften eV
•
Filing: 1995-09-22
•
Granted: 1998-08-11
•
Expires: 2015-09-22
Abstract
Abstract A thermoelectric radiation detector having a substrate (1) and a film (2) of solid state material having thermal anisotropy and containing YBa 2 Cu 3 O 7 , formed on the surface of the substrate, and wherein said film has CuO 2 planes (3) inclined with respect to the substrate plane, the improvement wherein at least a portion of the Y is replaced by another rare earth metal and/or at least a portion of the Ba and/or of the Cu is replaced by at least one other heavy metal at least in partial areas of the film and in a sufficient amount to increase the thermal anisotropy of the detector.
Inventors
- 👤 Hanns-Ulrich Habermeier
- 👤 Gerold Jager-Waldau
- 👤 Bernd Leibold
- 👤 Najeh Jisrawi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:40
CPC Classifications
H; H10; H10N; H10N10/00; H10N10/80; H10N10/85; H10N10/851; H10N10/855; H10N10/8552; C; C04; C04B; C04B35/00; C04B35/01; C04B35/45; C04B35/4504; C04B35/4508; G; G01; G01J; G01J5/00; G01J5/02; G01J5/04; G01J5/046; G01J5/10; G01J5/12
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
68 words
In a thermoelectric radiation detector having a substrate (1) and a film (2) of solid state material having thermal anisotropy and containing YBa 2 Cu 3 O 7 , formed on the surface of the substrate, and wherein said film has CuO 2 planes (3) inclined with respect to the substrate plane, the improvement 2-40% Y is replaced by Pr to increase the thermal anisotropy of the detector.
Claim 2
Dependent Claim
68 words
In a thermoelectric radiation detector having a substrate (1) and a film (2) of solid state material having thermal anisotropy and containing YBa 2 Cu 3 O 7 , formed on the surface of the substrate, and wherein said film has CuO 2 planes (3) inclined with respect to the substrate plane, the improvement 2-40% Y is replaced by Pr to increase the thermal anisotropy of the detector.
Claim 3
Dependent Claim
18 words
The thermoelectric radiation detector as set forth in claim 1, wherein approximately 10-30% Y is replaced by Pr.
Claim 4
Dependent Claim
20 words
The thermoelectric radiation detector as set forth in claim 1, wherein up to approximately 20% Y is replaced by Pr.
Claim 5
Dependent Claim
18 words
The thermoelectric radiation detector as set forth in claim 1, wherein approximately 20% Y is replaced by Pr.
Claim 6
Dependent Claim
52 words
The thermoelectric radiation detector as set forth in claim 1, wherein said film is a superlattice of an alternating sequence of layers of materials A and B and at least for one of said materials A or B the constituent Y is replaced in a sufficient amount to increase the thermal anisotropy.
Claim 7
Dependent Claim
23 words
The thermoelectric radiation detector as set forth in claim 5, wherein said of an constituent Y is replaced in an amount of 2%.
Claim 8
Dependent Claim
18 words
The thermoelectric radiation detector as set forth in claim 5, wherein approximately 10-30% Y is replaced by Pr.
Claim 9
Dependent Claim
18 words
The thermoelectric radiation detector as set forth in claim 5, wherein approximately 20% Y is replaced by Pr.
Claim 10
Dependent Claim
30 words
The thermoelectric radiation detector as set forth in claim 1, wherein the partial substitution is achieved such that the superconductivity of pure YBa 2 Cu 3 O 7 is suppressed.
Claim 11
Dependent Claim
74 words
A thermoelectric radiation detector having a substrate (1) and a film (2) of Bi m Ca n-1 Sr n Cu n O 2n+m+2 formed on the surface of the substrate, in the said film of which the CuO 2 planes (3) are inclined with respect to the substrate plane, wherein the concentration factors n and ml n, m are 2.2 or 3,2 respectively such that the anisotropy in the thermoelectric force is a maximum.
Claim 12
Dependent Claim
74 words
A thermoelectric radiation detector having a substrate (1) and a film (2) of Bi m Ca n-1 Sr n Cu n O 2n+m+2 formed on the surface of the substrate, in the said film of which the CuO 2 planes (3) are inclined with respect to the substrate plane, wherein the concentration factors n and ml n, m are 2.2 or 3,2 respectively such that the anisotropy in the thermoelectric force is a maximum.
Claim 13
Dependent Claim
83 words
A thermoelectric radiation detector having a substrate and a film of a crystalline solid-state material having anisotropic thermoelectric force formed on the surface of the substrate, the surface normal of said film not coinciding with one of the main anisotropic directions, wherein said film is configured as a superlattice of an alternating sequence of layers of materials C and D, said material C being a perovskite-type oxidic material, and said material D being Y.sub.(1-x) Pr x Ba 2 Cu 3 O 7 .
Claim 14
Dependent Claim
83 words
A thermoelectric radiation detector having a substrate and a film of a crystalline solid-state material having anisotropic thermoelectric force formed on the surface of the substrate, the surface normal of said film not coinciding with one of the main anisotropic directions, wherein said film is configured as a superlattice of an alternating sequence of layers of materials C and D, said material C being a perovskite-type oxidic material, and said material D being Y.sub.(1-x) Pr x Ba 2 Cu 3 O 7 .
Claim 15
Dependent Claim
38 words
The thermoelectric radiation detector as set forth in claim 11, wherein the material C is Bi m Ca n-1 Sr n Cu n O 2n+m+2 wherein m is 1 or 2 and n is 1, 2 or 3.
Claim 16
Dependent Claim
17 words
The thermoelectric radiation detector as set forth in claim 11, wherein material C is SrTiO 3 .
Claim 17
Dependent Claim
18 words
The thermoelectric radiation detector as set forth in claim 1, wherein silicon is employed as said substrate material.
Claim 18
Dependent Claim
22 words
The thermoelectric radiation detector as set forth in claim 14, wherein on said silicon substrate, an intermediate or buffer layer is formed.
Claim 19
Dependent Claim
23 words
The thermoelectric radiation detector as set forth in claim 15, wherein said intermediate or buffer layer contains ZrO 2 or CeO 2 .
References Cited (Backward Citations)
EP0296706A2
Cited
DE3844207A1
Cited
US5241191A
Cited
JPH0661532A
Cited
DE4306497A1
Cited
DE9316185U1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-08-10 | 2002-02-09 | 2002-08-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-08-10 | 2006-02-09 | 2006-08-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-08-10 | 2010-02-09 | 2010-08-11 | $7700.00 | Window Closed / Lapsed |