US5659181A
Expired / Lapsed
US
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Article comprising α-hexathienyl
Assignee: Nokia of America Corp
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Filing: 1995-03-02
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Granted: 1997-08-19
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Expires: 2015-03-02
Abstract
Abstract A previously unknown phase of α-hexathienyl, designated α-6T/HT, exhibits diffraction peaks at 2θ=4.31°, 8.64°, 12.96°, 17.32°, 26.15° and 29.08° in a CuK.sub.α powder X-ray diffraction pattern, and is expected to have properties (e.g., high hole mobility) that make the phase desirable for use in, e.g., thin film transistors. Substitution of thin films of α-6T/HT for prior art organic thin films in thin film transistors and other devices is contemplated.
Inventors
- 👤 Paul Michael Bridenbaugh
- 👤 Robert McLemore Fleming
- 👤 Robert Cort Haddon
- 👤 Robert Alfred Laudise
- 👤 Theo Siegrist
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:18
CPC Classifications
H; H10; H10K; H10K85/00; H10K85/10; H10K85/111; H10K85/113; H10D; H10D30/00; H10D30/60; H10D30/67; H10K85/60; H10K85/649; H10K85/655; G; G02; G02F; G02F1/00; G02F1/01; G02F1/13; G02F1/133; G02F1/136; G02F1/1362; G02F1/1368; H10K10/00; H10K10/40; H10K10/46; H10K10/462; H10K10/464; H10K10/466
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
40 words
An article comprising a quantity of α-hexathienyl; CHARACTERIZED IN THAT said quantity of α-hexathienyl consists substantially of a phase of α-hexathienyl that exhibits diffraction peaks at 2θ=4.31°, 8.64°, 12.96°, 17.32°, 26.15° and 29.08° in its CuK.sub.α powder X-ray diffraction pattern.
Claim 2
Dependent Claim
40 words
An article comprising a quantity of α-hexathienyl; CHARACTERIZED IN THAT said quantity of α-hexathienyl consists substantially of a phase of α-hexathienyl that exhibits diffraction peaks at 2θ=4.31°, 8.64°, 12.96°, 17.32°, 26.15° and 29.08° in its CuK.sub.α powder X-ray diffraction pattern.
Claim 3
Dependent Claim
33 words
The article of claim 1, wherein said phase of α-hexathienyl has monoclinic crystal symmetry, with unit cell axes a=0.914 nm, b=0.568 nm, and c=2.067 nm, and monoclinic angle β=98°, all within about ±1%.
Claim 4
Dependent Claim
26 words
The article of claim 1, wherein said phase is produced by a process that comprises solidifying at least a portion of a mass of molten α-hexathienyl.
Claim 5
Dependent Claim
32 words
The article of claim 1, wherein said phase is produced by a process that comprises deposition of α-hexathienyl on a substrate, said substrate being at a temperature of 295° C. or above.
Claim 6
Dependent Claim
14 words
The article of claim 1, wherein said quantity comprises a film of said phase.
Claim 7
Dependent Claim
48 words
Article according to claim 5, comprising one or more thin film transistors, a given one of said thin film transistors comprising a film of said phase of α-hexathienyl in contact with spaced apart source and drain electrodes, respectively, and further comprising a gate electrode spaced from said film.
Claim 8
Dependent Claim
13 words
Article according to claim 6, wherein the article is a flat screen display.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-08-18 | 2001-02-17 | 2001-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-08-18 | 2005-02-17 | 2005-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-08-18 | 2009-02-17 | 2009-08-19 | $7700.00 | Window Closed / Lapsed |