미래창조과학부 글로벌프론티어 (재)멀티스케일 에너지 시스템 연구단은 나노기술과 에너지
기술의 융합을 통하여 혁신적 미래 광에너지와 분자에너지 원천기술 개발을 목표로 하는 멀티스케일 에너지 시스템 연구사업을 추진하고 있습니다. 연구단에서는 격주로 멀티스케일 에너지 강좌를 개최합니다. 관심 있는 분들의 많은 참석 바랍니다.

1. 제  목 : Multi-scale optical engineering toward black thin-film photovoltaic cells
2. 연  사 : 이정용 교수(KAIST Graduate School of Energy, Environment, Water, and Sustainability)
3. 일  시 : 2014년 4월 18일 (금) 오후 17:00 ~ 18:00
4. 장  소 : 서울대학교 신공학관(301동) 117호 세미나실
5. 내  용 :
Abstract :
The major drawback of thin-film photovoltaic cells (PVs) such as organic and quantum-dot PVs is their relatively low light absorption. In the first part, we discuss multi-scale optical engineering schemes combining the advantages of both ray-optics and nanophotonics to achieve black absorption. Although many light trapping schemes have been proposed as a solution to compensate the low absorption, limited enhancement of ray-optical approach and narrow spectral response of nanophotonics tended to restrict the full photon absorption.
    In the second part, we propose a metal-metal core-shell nanocube (NC) as an advanced plasmonic material for highly efficient organic solar cells (OSCs). We covered an Au core with a thin Ag shell as a scattering enhancer to build Au@Ag NCs, which showed stronger scattering efficiency than Au nanoparticles (AuNPs) throughout the visible range. Highly efficient plasmonic organic solar cells were fabricated by embedding Au@Ag NCs into an anodic buffer layer, poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS). We proved the strongly enhanced plasmonic scattering efficiency of Au@Ag NCs embedded in organic solar cells via theoretical calculations and detailed optical measurements.

6. 약  력 :
KAIST EEWS대학원 조교수 2010 - 현재
Ph.D. Electrical Engineering, Stanford University
M.S. Electrical Engineering, Seoul National University
B.S. Electrical Engineering, Seoul National University

문  의 : 멀티스케일 에너지 시스템 연구단 연구지원본부 (☏ 889-6669,6670)
           남기태 교수 (재료공학부), 최만수 교수 (기계항공공학부)