Electrochromic device and manufacturing method thereof

Abstract

The invention discloses an electrochromic device and a manufacturing method of the electrochromic device. The electrochromic device comprises a transparent conducting layer, an electrochromic layer and an electrolyte layer, and the electrolyte layer is a transparent nano-particle film filled with electrolyte solutions with Li ions. An anode electrochromic layer or a cathode electrochromic layer is adopted as the electrochromic layer, and the electrochromic behaviors of four colors (orange-yellow-green-blue) can be achieved under the multi-step electric potential ([-3.0, +3.0] V). The inorganic oxide nano-particle film is manufactured based on the plasma enhanced chemical vapor deposition technology and is fully soaked in the electrolyte solutions with the Li ions to form an inorganic-organic composite film as the solid electrolyte layer, cost is low, the electrochemical deposition technology, the PECVD technology, the magnetron sputtering technology and the like are adopted in the manufacturing process of the electrochromic device, deposition is carried out at the room temperature, large-size growth can be achieved easily, compared with an existing electronic device, process compatibility is good, large-scale industrialization is easy to achieve, and therefore the manufacturing cost of the device can be greatly lowered.

Description

technical field [0001] The invention relates to the field of electrochromic technology, in particular to an electrochromic device and a preparation method thereof. Background technique [0002] Electrochromic materials with semiconducting nature can change their optical properties under the action of an applied electric field or current. Transition metal oxides such as vanadium pentoxide, tungsten oxide and Molybdenum shows great interest in the electrochromic effect. Among the electrochromic transition metal oxides, vanadium pentoxide exhibits both anodic and cathodic discoloration, and, vanadium pentoxide based films have a better cycle stability, reversibility and multiple electrochromic (orange- yellow-green-blue) behavior, 60-90% optical modulation in the 550-900 nm spectral region, these desired results are due to the enhanced electronic intervalence Mo 6+ , V 5+ and V 4+ transfer, and there is V 5+ and V 4+ change. This multi-color electrochromic device has th...

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Problems solved by technology

However, the current electrochromic devices have the problem of relatively high production cost in terms of raw material cost or preparation process, and no effective solution has been proposed yet.

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