All-solid state inorganic electrochromic device and preparation method thereof

Abstract

The invention discloses an all-solid state inorganic electrochromic device, which comprises a transparent glass substrate A, a transparent glass substrate B, a transparent conductive thin film layer I, a transparent conductive thin film layer II, an electrochromic layer, an ion storage layer, an electron blocking layer I, an electron blocking layer II and an ion transport layer, wherein the transparent glass substrate A and the transparent glass substrate B are arranged at two sides; the transparent conductive thin film layer I is arranged near the middle part on the transparent glass substrate A; the transparent conductive thin film layer II is arranged near the middle part on the transparent glass substrate B; the electrochromic layer is arranged at the inner side of the transparent conductive thin film layer I; the ion storage layer is arranged at the inner side of the transparent conductive thin film layer II; the electron blocking layer I is arranged at the inner side of the electrochromic layer; the electronic blocking layer II is arranged at the inner side of the ion storage layer; the ion transport layer is arranged between the electronic blocking layer I and the electronicblocking layer II; a WO3-doped TiO2 thin film is adopted by the electrochromic layer; a lithium phosphorous oxynitride (LiPON) thin film is adopted by the ion transport layer; and a V2O5 thin film isadopted by the ion storage layer, so that the persistent defects that the electrochromic device is unstable in photochromic performance and short in cycle life in the recycling process are avoided.

Description

technical field [0001] The invention relates to the field of electrochromic devices, in particular to an all-inorganic solid-state electrochromic device and a preparation method thereof. Background technique [0002] Electrochromism means that under the action of an external electric field, the electrochromic film can achieve the effect of coloring and bleaching. Its excellent display effect is widely used in electronic information, sensors, smart windows, military defense and other fields. Due to the defects in the performance of each film layer, the traditional electrochromic device has defects such as short cycle life, slow color change response speed, unstable performance, high production cost, and complicated process. Domestic electrochromic research mainly focuses on the performance improvement of single-layer electrochromic thin film materials and the preparation of small-sized semi-solid devices and a small amount of all-solid-state devices, and the cycle life of the...

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Problems solved by technology

Due to the defects in the performance of each film layer, the traditional electrochromic device has defects such as short cycle life, slow response speed of discoloration, unstable performance, high production cost and complicated process.

Domestic electrochromic research mainly focuses on the performance improvement of single-layer electrochromic thin film materials and the preparation of small-sized semi-solid devices and a small amount of all-solid-state devices, and the cycle life of the devices can only reach about a few thousand times. , far from reaching the 10 required for industrial use 4 More than times

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