A kind of transferable flexible electrode and its preparation method and application

Abstract

The invention belongs to the technical field of organic electroluminescent devices, and in particular relates to a transferable flexible electrode and its preparation method and application. The invention provides a method for preparing a transferable flexible electrode, comprising the following steps: (1) sequentially coating a photoresist, coating a PDMS layer, and laminating thin graphite sheets on a substrate to obtain a primary electrode; (2) removing the Step (1) The photoresist of the primary electrode is removed from the substrate, and the remaining PDMS layer and graphite flakes are annealed to obtain a transferable flexible electrode. The invention solves the problem that the traditional flexible electrode material needs to be fixed on the substrate and cannot be transferred, realizes the technical effect of separating the flexible electrode material from the substrate, and enriches the use scheme of the flexible electrode. Experiments show that the transferable flexible electrode of the present invention has excellent mechanical bending performance, air stability and heat dissipation performance.

Description

technical field [0001] The invention belongs to the technical field of organic electroluminescent devices, and in particular relates to a transferable flexible electrode and its preparation method and application. Background technique [0002] Organic electronic devices are semiconductor devices with specific functions prepared on the basis of conductive organic materials. Since most of the organic materials in organic electronic devices are composed of carbon and hydrogen, using them to make electronic devices has many advantages, such as easy fabrication, low cost, chemical adjustment, transparency and flexibility, etc. Flexible organic light-emitting devices can be used in display technology. With their outstanding advantages such as light weight, high efficiency, easy processing and deformability, they are suitable for use in wearable devices, plastic bioelectronics and prosthetic electronic skin, and will be commercialized in the next generation Display market realizes...

AI Technical Summary

Problems solved by technology

Usually, the optional flexible substrates mainly include ultra-thin glass, metal foil, etc., but the flexibility of ultra-thin glass is not good, fragile, and the cost is high, the preparation is difficult, and ultra-thin glass cannot be used alone in the flexible packaging process. In use, polymer coating is required to protect the glass surface from mechanical damage and chemical reagent erosion, and the epoxy resin sealing technology at the edge cannot meet the requirements; the surface of the metal foil substrate is rough and needs to be planarized, and it is light-transmitting The performance is extremely poor, and the device can only adopt the top-emission structure that emits light from the upper part of the ultra-thin transparent electrode, which is not very practical.

[0004] Considering the brittleness and poor packaging performance of common flexible substrates, some new flexible substrates can solve some shortcomings of high brittleness and poor packaging performance. However, it is difficult to directly prepare flexible electrodes on new flexible substrates.

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