According to CINNO Research industry information, South Korea has developed a process technology that can replace transparent electrode materials with a daily dependence of up to 70%, and looks forward to achieving the localization of core components of IT products with better performance materials.
On October 16, the team of Dr. Yoon Changhun of Nano-Optical Fusion Technology of the Korea Institute of Production Technology said that they have developed a process technology that irradiates lasers on conductive polymers to improve the conductivity. The technology can be applied as transparent electrode materials. Traditional transparent electrodes generally use ITO, and the dependence on Japanese imports is as high as 70%. In addition, although ITO has excellent conductivity, it is very fragile when bent and folded. For this reason, there are also many new-generation transparent electrode R & D competitions that overcome this problem.
The R & D team used a conductive polymer made of plastic. The shape can be changed at will, and the external pressure will not crack, which can overcome the shortcomings of ITO. But the biggest problem is that the conductive performance is only one-thousandth of ITO, even if chemical additives are used, it can not be comparable to the conductive performance of ITO. The R & D team irradiated the infrared electrode with a wavelength of 1064 nanometers on the transparent electrode of the conductive polymer 'PEDOT: PSS', so that PEDOT was exposed to improve the conductive performance. PEDOT: PSS transparent electrode is a material of PSS protective skin wrapped with conductive PEDOT. When irradiated with laser, PEDOT can be exposed, and the conductivity will also increase.
This achievement is the first case to realize the level of ITO film's electrical conductivity by physical treatment. A simple back-end process can be realized, which helps to save manufacturing costs. Simultaneously, the pattern can also be drawn on the transparent electrode by laser irradiation.
Dr. Yoon Changhun said: It was an accidental opportunity to discover the phenomenon of impedance reduction of conductive polymers after laser irradiation, and used this as an opportunity to develop corresponding results. This process technology can be applied in the fields of flexible display panels, wearable and folding solar panels in the future.