Flexible and transparent electrode film based on silk fibroin and manufacturing method and application thereof

Abstract

The invention discloses a flexible and transparent electrode film based on silk fibroin which comprises a flexible supporting layer and a conducting layer and is characterized in that the conducting layer is a silver nanowire film formed by silver nanowire interwoven networks. The flexible supporting layer is a silk fibroin film, wherein silk fibroin solution is dried and solidified to adhere to the silver nanowire film through Van der Waals force to form the silk fibroin film. The electrode film has good light transmittance and conductivity at the same time and is high in flatness and binding force and good in affinity with the human body. Particularly, the silk fibroin is adopted as the supporting layer, so that the supporting layer is good in biocompatibility, biological degradability and optical performance and free of poison and irritation, the degradation process is also controllable, and the electrode film can be used in the aspects of electronic products, conductive film substrates, screens and others making intimate contact with the human body. The invention further provides a manufacturing method and application of the electrode film.

Description

technical field [0001] The invention relates to a flexible transparent electrode film based on silk fibroin and its preparation method and application. Background technique [0002] The current conductive thin films and other electronic devices mainly use semiconductors, glass, and polymers as platforms. With the development of optoelectronics and biotechnology, optoelectronic devices and thin films with good biocompatibility and strong affinity with the human body are developed. Optoelectronics and biomedicine have received more and more attention. [0003] Conventional organic optoelectronic devices are mostly prepared on rigid substrates, that is, glass or silicon wafers are used as substrates, and conductive oxide films (such as ITO) are plated on them. Although they have excellent device performance, they are resistant to vibration and impact. The ability is weak, the weight is relatively heavy, and it is not very convenient to carry, and the application in some occasi...

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Problems solved by technology

However, despite these advantages, there are still many limitations in replacing rigid substrates with flexible substrates, and the fabrication of flexible devices still has many fundamental issues to be resolved.

For flexible substrates, since the surface smoothness of flexible substrates is far less than that of rigid substrates, special equipment and difficult processes are required for surface smoothing of flexible substrates, which increases the production cost of substrates; flexible substrates The water and oxygen permeability of the substrate is much higher than that of the rigid substrate, causing the organic dyes inside the device to be affected by the water and oxygen permeating through the substrate, reducing the conversion efficiency of the device

[0005] The materials currently used for flexible substrates are mainly UV-cured silicone adhesives or transparent dielectric polymer materials. However, these two materials do not have good biocompatibility and light transmission, and are not suitable for use as Preparation of bioelectrode materials or other electronic products that are in close contact with the human body, conductive film substrates, touch screens, etc.

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