- 건국대학교

	Prof. You-Shin No’s Team Develops a New Technology, ‘All-Graphene-Contact’
	관리자		353		2022.02.08

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Prof. You-Shin No’s research team (Department of Physics) at Konkuk University announced on the 27th that they have developed a new technology ‘All-Graphene-Contact’ which replaces existing metal electrodes with ultra-thin graphene electrodes that are optically transparent and mechanically flexible using micro-precision transcription technology. The research team discovered that the technology will dramatically improve the issue of light absorption and scattering caused by the existing metal electrodes as well as the limiting light interaction with other electrodes. They also demonstrated that it could be a core technology to realize various on demand electric-driven light sources, which are long-standing challenges in the field of high-intensity optical circuit research as fine-precision transcription is now possible. <img width="582" height="397" style="margin-right: auto; margin-left: auto; display: block;" alt="" src="ArticleFile.do?id=11837620" /> 
The research team implemented p-contact and n-contact by contacting both ends of the p-i-n-doped semiconductor nanowire in the vertical cutting direction, and manufactured a brightness controllable nanowire light emitting electrodes through current injection technique. Furthermore, they precisely integrated electrically driven nanowire light sources at designated locations of pre-manufactured ultra-small optical waves and presented light transmission through successful current injection technique to examine the possibility of implementing on demand light sources in high-intensity optical circuits. Prof. No said, “Although there had been progress in the research of high-intensity optical circuit with the development of ultra-fine light sources, it was still a challenge to electrically drive a single light source without precisely combining it with passive optics and provoking light damage,” and, “These issues could be solved with this ‘All-Graphene-Contact’.” The achievements of Prof. No’s research team were published online on Jan 20, 2022, in Nano Letters, a world-renowned international journal in the field of nano science and technology. Meanwhile, the research was conducted with the support of new basic research projects by Ministry of Science and ICT.


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