세미나안내

[2013 11 13] 정기세미나 8th

Semiconductor Nanostructures for Solid State Lighting and Quantum Photonics

MSE Graduate Students and Researchers

관리자 | 2013.11.13 09:05 | 조회 2774


Reception: MSE Graduate Students and Researchers

Reference: MSE Professors

Subject: The 8th Seminar - Fall Semester, 2013

Date: 2013. 11. 13(Wed), 17:00 ~ 18:15

Place: Science Building, Room.202 Multimedia Room

Title: Semiconductor Nanostructures for Solid State Lighting

and Quantum Photonics

Speaker: Prof. Cho, Yong-Hoon (KAIST)

Host of a Seminar: Prof. Jong Kyu Kim

Speaker Language: ENGLISH

Abstract:

Low-dimensional semiconductor nanostructures such as quantum dots and quantum wires have been actively investigated due to their unique electronic and optical properties. Especially, much attention has been paid to group III-V and II-VI semiconductor nanostructures owing to their wide range of bandgap energy and versatile optoelectronic applications for solid state lighting and quantum devices. In this talk, various types of light emitting semiconductor nanostructures and their characteristics will be presented. Especially, we focus on the group-III nitride nanorod and nanopyramidal structures prepared by metal-organic chemical vapor deposition and chemical etching method. We demonstrated electrically driven light emitting diodes with nanopyramid structures and also observed unique optical properties of single quantum dots formed on the tapered nanorod structures. Single quantum dots formed in these types of nanostructures overcome many limitations in conventional self-assembled epitaxial quantum dots and can be utilized as high efficiency quantum emitters for quantum information technologies. An overview of the characteristics of the above group III-nitride based quantum dots and other types of quantum dots will also be given.

Department of Materials Science and Engineering



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