Reflection-controllable electrochromic device using a base metal as a transparent conductor
View Patent ↗An all-solid-state electrochromic device comprises a transparent base material, and an electrochromic multilayer-stack structure formed on the transparent base material. The electrochromic multilayer-stack structure comprises a first transparent-conductive film formed on the transparent base material, an ion-storage layer formed on the first transparent-conductive film, a solid-electrolyte layer formed on the ion-storage layer, and an electrochromic layer formed on the solid-electrolyte layer. The electrochromic layer comprises a reflection-controllable electrochromic layer. In one exemplary embodiment, the electrochromic layer comprises a reflection-controllable layer that comprises at least one of antimony and an antimony-based alloy. A second transparent-conductive film can be formed on the reflection-controllable layer, or between the reflection-controllable layer and the solid-electrolyte layer. In one exemplary embodiment, the second transparent-conductive layer comprises a base metal and/or a base metal alloy.
1. An all-solid-state electrochromic device comprising:
a transparent base material; and
an electrochromic multilayer-stack structure formed on the transparent base material, the electrochromic multilayer-stack structure comprising:
a first transparent-conductive film;
an ion-storage layer formed on the first transparent-conductive film;
a solid-electrolyte layer formed on the ion-storage layer; and
an electrochromic layer formed on the solid-electrolyte layer, the electrochromic layer comprising a reflection-controllable electrochromic layer comprising an antimony-based alloy comprising Sb x CoLi y in which 0.5≦x≦10, and 0.1≦y≦10.
2. The all-solid-state electrochromic device according to claim 1 , wherein 3≦x≦5 and 0.1≦y≦3.
3. The all-solid-state electrochromic device according to claim 1 , further comprising a second transparent-conductive film formed between the solid-electrolyte layer and the reflection-controllable layer.
4. The all-solid-state electrochromic device according to claim 3 , wherein the second transparent-conductive film comprises a surface resistance of less than or equal to about 100 Ohm/□.
5. The all-solid-state electrochromic device according to claim 3 , wherein the second transparent-conductive film comprises at least one of Co, Mn, Ni, Fe, Zn, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W, Cd, Mg, Al, Ga, In, Sn, Pb, Bi, or alloys thereof.
6. The all-solid-state electrochromic device according to claim 5 , wherein the second transparent-conductive film comprises a thickness of between about 0.1 nm and about 400 nm.
7. The all-solid-state electrochromic device according to claim 6 , wherein the second transparent-conductive film comprises a thickness of about 0.5 nm to about 50 nm.
8. An all-solid-state electrochromic device comprising:
a transparent base material; and
an electrochromic multilayer-stack structure formed on the transparent base material, the electrochromic multilayer-stack structure comprising:
a first transparent-conductive film;
an ion-storage layer formed on the first transparent-conductive film;
a solid-electrolyte layer formed on the ion-storage layer; and
an electrochromic layer formed on the solid-electrolyte layer, the electrochromic layer comprising a reflection-controllable electrochromic layer comprising an antimony-based alloy comprising Sb x MnLi y in which 0.5≦x≦10, and 0.1≦y≦10.
9. The all-solid-state electrochromic device according to claim 8 , wherein 3≦x≦5 and 0.1≦y≦3.
10. The all-solid-state electrochromic device according to claim 8 , further comprising a second transparent-conductive film formed between the solid-electrolyte layer and the reflection-controllable layer.
11. The all-solid-state electrochromic device according to claim 10 , wherein the second transparent-conductive film comprises a surface resistance of less than or equal to about 100 Ohm/□.
12. The all-solid-state electrochromic device according to claim 10 , wherein the second transparent-conductive film comprises at least one of Co, Mn, Ni, Fe, Zn, Ti, V, Cr, Zr, Nb, Mo, Hf, Ta, W, Cd, Mg, Al, Ga, In, Sn, Pb, Bi, or alloys thereof.
13. The all-solid-state electrochromic device according to claim 12 , wherein the second transparent-conductive film comprises a thickness of between about 0.1 nm and about 400 nm.
14. The all-solid-state electrochromic device according to claim 13 , wherein the second transparent-conductive film comprises a thickness of about 0.5 nm to about 50 nm.