Degradable substrate for flexible optoelectronic device and manufacture method thereof

Abstract

The invention discloses a degradable substrate for a flexible optoelectronic device and a manufacture method thereof. The substrate comprises a flexible substrate and a conducting layer on the flexible substrate. The flexible substrate is made of shellac which is doped with ultraviolet-sensitive adhesive with the mass ratio of 0.3-6.5%. The ultraviolet-sensitive adhesive is a mixture of free-radical type ultraviolet-sensitive adhesive and cationic-type ultraviolet-sensitive adhesive. According to the invention, the light transmission performance of the substrate is improved through cross-linking reaction of the ultraviolet-sensitive adhesive, therefore increasing the performance of the optoelectronic device. Meanwhile, the flexibility and the water- and oxygen-resistant performance of the substrate are also greatly enhanced, and the conducting layer and the substrate are combined quite firmly. Furthermore, the shellac has the biodegradability which solves the problem of ecological environment pollution caused by electronic wastes, and can be widely applied in the environment-friendly flexible optoelectronic field in future.

Description

technical field [0001] The invention belongs to the technical field of organic optoelectronics, and in particular relates to a degradable substrate for flexible optoelectronic devices and a preparation method thereof. Background technique [0002] Optoelectronics technology is a high-tech industry that develops rapidly after microelectronics technology. With the rapid development of optoelectronic technology, optoelectronic products such as solar cells, optical image sensors, plasma flat panel displays, electroluminescent displays, thin film transistors, and liquid crystal display panels have gradually matured, and they have greatly improved human life. At the same time, the wide application of optoelectronic information technology in various fields of social life has also created a huge growing market. Developed countries regard the optoelectronic information industry as one of the key development areas, and the competition in the optoelectronic information field is unfold...

AI Technical Summary

Problems solved by technology

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

For example, first of all, due to the low surface energy of flexible substrates compared with rigid substrates, the adhesion of the films to be deposited is relatively poor, and the surface flatness of flexible substrates is far less than that of glass substrates.

Moreover, the electrode materials of organic optoelectronic devices are easily oxidized in an oxygen-containing environment, resulting in a decrease in device performance; organic materials are very sensitive to impurities, oxygen, and water, and are easily contaminated to reduce device efficiency.

In addition, most flexible substrates are non-degradable or have certain toxicity. Therefore, the ecological environment pollution caused by electronic waste is also a problem in the field of flexible optoelectronics.

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