Electrochromic devices based on lithium insertion

• US 7,715,082 B2
• Filed: 06/30/2008
• Issued: 05/11/2010
• Est. Priority Date: 06/30/2008
• Status: Active Grant

• Current Assignee: View Incorporated
• Original Assignee: Soladigm, Inc.
• Inventors: Nguyen, Paul P., Wang, Zhongchun
• Primary Examiner(s): Sugarman; Scott J
• Assistant Examiner(s): PINKNEY, DAWAYNE
• Application Number:
  US12/165,292
• Publication Number:
  US 20090323158A1
• Time in Patent Office: 680 Days
• Field of Search: 359265-270, 359272-275, 359/277, 359245-247, 359/254, 345/49, 345/105, 349182-186, 348/814, 250/70, 438/929
• US Class Current: 359/269
• CPC Class Codes: G02F 1/1523 comprising inorganic material
• CPC Class Codes: G02F 1/153 Constructional details

Abstract

An electrochromic switching device comprises a counter electrode, an active electrode and an electrolyte layer disposed between the counter electrode and the active electrode. The active electrode comprises at least one of an oxide, a nitride, an oxynitrides, a partial oxide, a partial nitride and a partial oxynitride of at least one of Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb and I. Upon application of a current to the electrochromic switching device, a compound comprising at least one of the alkali and the alkaline earth metal ion and an element of the active electrode is formed as part of the active electrode.

Claims

1. An electrochromic switching device, comprising:

a counter electrode;

an active electrode comprising at least one of a nitride, an oxynitride, a partial nitride, or a partial oxynitride of at least one of Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb, or I; and

an electrolyte layer disposed between the counter electrode and the active electrode, the electrolyte layer comprising at least one of an alkali or an alkaline earth metal ion.

2. The electrochromic switching device according to claim 1, wherein the active electrode comprises a nitride of between about 1% partial nitridation and about 100% nitridation of at least one of Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb, or I.

3. The electrochromic switching device according to claim 1, wherein the active electrode comprises an oxynitride of between about 1% partial oxynitridation and about 100% oxynitridation of at least one of Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb, or I.

4. The electrochromic switching device according to claim 1, wherein upon application of a current to the electrochromic switching device, a compound comprising at least one of the alkali or the alkaline earth metal ion and an element of the active electrode is formed as part of the active electrode.

5. The electrochromic switching device according to claim 4, wherein the alkali metal ion is Li.

6. The electrochromic switching device according to claim 1, wherein the active electrode further comprises at least one of lithium oxide or lithium nitride.

7. The electrochromic switching device according to claim 1, wherein the active electrode further comprises at least one of Ag, Cu, Al, Mg, Ti, Ta, Zn, Nb, W, or V, and their corresponding oxides, nitrides, or oxynitrides.

8. An electrochromic switching device, comprising:

a counter electrode;

an active electrode consisting of at least one of an oxide, a nitride, an oxynitride, a partial oxide, a partial nitride or a partial oxynitride of at least one of Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb, or I; and

an electrolyte layer disposed between the counter electrode and the active electrode, the electrolyte layer comprising at least one of an alkali or an alkaline earth metal ion.

9. The electrochromic switching device according to claim 8, wherein the active electrode consists of an oxide of between about 1% partial oxidation and about 100% oxidation of at least one of Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb, or I.

10. The electrochromic switching device according to claim 8, wherein the active electrode consists of a nitride of between about 1% partial nitridation and about 100% nitridation of at least one of Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb, or I.

11. The electrochromic switching device according to claim 8, wherein the active electrode consists of an oxynitride of between about 1% partial oxynitridation and about 100% oxynitridation of at least one of Sb, Bi, Si, Ge, Sn, Te, N, P, As, Ga, In, Al, C, Pb, or I.

12. The electrochromic switching device according to claim 8, wherein upon application of a current to the electrochromic switching device, a compound comprising at least one of the alkali and the alkaline earth metal ion and an element of the active electrode is formed as part of the active electrode.

13. The electrochromic switching device according to claim 12, wherein the alkali metal ion is Li.

14. The electrochromic switching device according to claim 8, wherein the active electrode further consists of at least one of lithium oxide or lithium nitride.

15. The electrochromic switching device according to claim 8, wherein the active electrode further consists of at least one of Ag, Cu, Al, Mg, Ti, Ta, Zn, Nb, W, or V and their corresponding oxides, nitrides, or oxynitrides.