A kind of all-inorganic solid-state electrochromic device and preparation method thereof

Abstract

The invention discloses an all-inorganic solid-state electrochromic device, comprising a transparent glass substrate A and a transparent glass substrate B arranged on both sides, a transparent conductive thin film layer I arranged on the transparent glass substrate A near the middle, and arranged on the transparent glass The transparent conductive film layer II near the middle of the substrate B, the electrochromic layer disposed inside the transparent conductive film layer I, the ion storage layer disposed inside the transparent conductive film layer II, and the electron blocking layer disposed inside the electrochromic layer Layer I, the electron blocking layer II arranged on the inner side of the ion storage layer; the ion transport layer arranged between the electron blocking layer I and the electron blocking layer II; the electrochromic layer adopts WO 3 Doped TiO 2 film, the ion transport layer adopts lithium phosphorus oxynitride (LiPON) film, and the ion storage layer adopts V 2 O 5 The thin film of the invention solves the defects of unstable discoloration performance and poor cycle life that have always existed in the process of cyclic use of electrochromic devices.

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] Electrochromic means that under the action of external electric field, electrochromic film can achieve the effect of coloring and bleaching. Its excellent display effect is widely used in electronic information, sensors, smart windows, military and national defense and other fields. Traditional electrochromic devices have defects such as short cycle life, slow discoloration response speed, unstable performance, high production cost, and complicated process due to the defects in the performance of each film layer. Domestic electrochromic research mainly focuses on the performance improvement of single-layer electrochromic thin film materials, the preparation of small-sized semi-solid-state devices, and the preparation of a small number of all-solid-state devices,...

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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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