公开(公告)号：US09831452B2

公开(公告)日：2017-11-28

申请号：US14282026

申请日：2014-05-20

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Chulki Kim ,  Yeong Jun Kim ,  Young Mo Jung ,  Seong Chan Jun ,  Taikjin Lee ,  Seok Lee ,  Young Tae Byun ,  Deok Ha Woo ,  Sun Ho Kim ,  Min Ah Seo ,  Jae Hun Kim ,  Jong Chang Yi

IPC: H01L51/05 ,  H01L51/00 ,  H01L51/10 ,  C01B31/04

CPC classification number: H01L51/0558 ,  C01B32/194 ,  H01L51/0012 ,  H01L51/002 ,  H01L51/0045 ,  H01L51/0093 ,  H01L51/0562 ,  H01L51/0583 ,  H01L51/107

Abstract: A method for forming a PN junction in graphene includes: forming a graphene layer, and forming a DNA molecule layer on a partial region of the graphene layer, the DNA molecule layer having a nucleotide sequence structure designed to provide the graphene layer with a predetermined doping property upon adsorption on the graphene layer. The DNA molecule has a nucleotide sequence structure designed for doping of graphene so that doped graphene has a specific semiconductor property. The DNA molecule is coated on the surface of the graphene layer of which the partial region is exposed by micro patterning, and thereby, PN junctions of various structures may be formed by a region coated with the DNA molecule and a non-coated region in the graphene layer.

公开(公告)号：US09261714B2

公开(公告)日：2016-02-16

申请号：US14533297

申请日：2014-11-05

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Sun Ho Kim ,  Jae Hun Kim ,  Chulki Kim ,  Kyungsun Moon ,  Min Ah Seo ,  Deok Ha Woo ,  Seok Lee ,  Jong Chang Yi ,  Taikjin Lee ,  Youngchul Chung

IPC: G02F1/03 ,  G02F1/01 ,  G02B5/00 ,  G02F1/00 ,  B82Y20/00

CPC classification number: G02F1/0126 ,  B82Y20/00 ,  G02B5/008 ,  G02F2203/10 ,  Y10S977/834

Abstract: A plasmonic all-optical switch includes a graphene layer, a first dielectric layer located on the graphene layer, a nano-antenna located on the first dielectric layer, and a second dielectric layer located on the nano-antenna. An incident beam is propagated by means of a surface plasmon wave generated at an interface between the graphene layer and the first dielectric layer. Further, localized surface plasmon resonance is selectively generated at an interface between the nano-antenna and the second dielectric layer by means of a pump beam incident to the nano-antenna to decrease an intensity of the incident beam. The plasmonic all-optical switch may operate at an ultrahigh speed just with a small light energy without any electric method, greatly reduce power consumption of an IT device by applying to an all-optical transistor or the like, and increase a processing rate.

Abstract translation: 等离子体全光开关包括石墨烯层，位于石墨烯层上的第一电介质层，位于第一电介质层上的纳米天线和位于纳米天线上的第二电介质层。 入射光束通过在石墨烯层和第一介电层之间的界面处产生的表面等离子体波传播。 此外，通过入射到纳米天线的泵浦光束在纳米天线和第二介电层之间的界面选择性地产生局部表面等离子体共振，以降低入射光束的强度。 等离子体全光开关可以在没有任何电气方式的情况下以超轻的光能运行，通过施加到全光晶体管等来大大降低IT设备的功耗，并且提高处理速率。