visual
visual

세미나

  • HOME
  • >
  • 소식
  • >
  • 세미나
날짜 2018-05-29 16:00 
일시 May 29 (Tue.), 04:00 PM 
장소 #1323, E6-2 
연사 Prof. Jae-Won Jang 

Physics Seminar Series

 

 

Investigation on metal nanostructure/semiconductor junction and its applications

 

Prof. Jae-Won Jang

Dept. of Physics, Pukyong National University

 

May 29 (Tue.), 04:00 PM

#1323, E6-2

 

Abstract:

Hybrid nanostructures have attracted attention due to many novel properties that are lacking in any one material. Among hybrid nanostructures, semiconductor with metal nanomaterials have been more exploited because metals and semiconductors have different properties that, in combination, result in unique electrical and optical properties. Localized surface plasmon resonance (LSPR), which is one of the novel properties of metal nanoparticles (NPs), has been used as a good strategy for increasing the opto-electric performance in semiconductors. In this presentation, improvement of the opto-electronic properties of non-single crystallized nanowire (NW) devices with space charges generated by LSPR is demonstrated. The photocurrent and spectral response of single polypyrrole (PPy) NW devices are increased by electrostatically attached Ag nanoparticles (NPs). In particular, it is also proved the space charge generation by LSPR of Ag NPs by means of characterizing current–voltage (J–V) dependence and finite-differential time domain (FDTD) simulation on the NW devices. Moreover, semiconductor type dependent role of metal NP in metal NPs decorated semiconductor NW is demonstrated by using light irradiated Kevin probe force microscopy. As an another example of applications based on metal nanostructures and semiconductor junction, it is also demonstrated that a non-traditional metal–semiconductor transition governed by two-layer conduction is possible by tuning the conducting channel of one layer of the two-layer conduction system. By means of the electroless deposition method Au nanofeatures (AuNFs) on p-type silicon (p-Si) is produced as the two-layer conduction system, controlling AuNF coverage (Au%) below and above the percolation threshold (pc). Even when the AuNF coverage percentage is larger than pc, the resistivities of the AuNFs on p-Si show unconventional metal-semiconductor transition as the temperature increases.

 

Department of Physics, KAIST

 

5b07a2c83fc9688fef6c438c.png

 

번호 날짜 장소 제목
공지 2022-10-24 16:00  E6 #1501(공동강의실)  Physics Colloquim(Fall 2022)
공지 2022-09-21 10:30  E6-1 #1501  [Update 세미나 영상] Distinguished Lecture 'The Magic of Moiré Quantum Matter' Prof. Pablo Jarillo-Herrero(Department of Physics, MIT)
공지 2022-11-11 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Honeycomb oxide heterostructures for quantum spin liquid
공지 2022-10-28 11:00  E6-2 #1323  [Update 세미나영상] (응집물리 세미나) Machine-Learning-Guided Prediction models and Materials discovery for high Tc cuprates
공지 2022-10-07 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Competing orders in a vanadium-based kagome metal monolayer
공지 2022-09-23 11:00  E6-2 #1323  [Update 세미나 영상] (응집물리 세미나) Steady Floquet-Andreev states in graphene Josephson junctions
공지 2022-09-22 11:00  E6-1 #1323  2022 가을학기 응집물리 및 광학 세미나 전체 일정
79 2019-05-09 16:00  #1323, E6-2  Quantum Optical Sensing Using Single Photons And Single Photon Emission from Single Emitters file
78 2019-05-08 16:00  E6 Room(#1323)  Imaging valley dependent electron transport in 2D semiconductors file
77 2019-05-02 16:00  #1323, E6-2  Anomalous optical properties of halide perovskites file
76 2019-05-01 16:00  #1323, E6-2  Raman and x-ray scattering study on correlated electron systems: two case examples file
75 2019-04-26 16:00  #1323, E6-2  Robust Quantum Metrology using Strongly Interacting Spin Ensembles and Quantum Convolutional Neural Network file
74 2019-04-23 16:00  #1323, E6-2  From Mott physics to high-temperature superconductivity file
73 2019-04-19 11:00  #1323, E6-2  First-principles studies of semiconductors for solar cell applications file
72 2019-04-11 16:00  #1323, E6-2  Massive screening for cathode active materials using deep neural network file
71 2019-04-04 16:00  #1323, E6-2  Chiral spin-photon interaction at nanoscale file
70 2018-11-29 16:00  #1323, E6-2  양자 칸델라 실현을 위한 단일 광자 발생장치 개발 file
69 2018-11-21 15:00  #1323, E6-2  Engineering topological quantum physics at the atomic scale file
68 2018-11-08 16:00  #1323, E6-2  Conformality lost file
67 2018-11-01 16:00  #1323, E6-2  Direct holography from a single snapshot file
66 2018-10-26 16:00  #1323, E6-2  Coexisting triple-point and nodal-line topological magnons and thermal Hall effect in pyrochlore iridates file
65 2018-10-25 16:00  #1323, E6-2  Abelian and non-Abelian dark photons file
64 2018-10-18 16:00  #1323, E6-2  Applications of nonlinear optics for condensed matter researches file
63 2018-10-19 10:00  #1323, E6-2  Energy conversion processes during magnetic reconnection in a laboratory plasma file
62 2018-10-18 10:00  #1323, E6-2  Understanding membrane protein folding using single-molecule force techniques file
61 2018-10-16 10:00  #1323, E6-2  Capturing protein cluster dynamics and gene expression output in live cells file
60 2018-10-15 16:00  #1323, E6-2  Universal properties of macroscopic current-carrying systems file