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연사 이중건 교수
강좌일시 2013년 6월 19일  오후 17:00 ~ 18:30
강좌 제목 Study on Light Absorption and Carrier Transport of Dye Sensitized Solar Cells
첨부파일 에너지강좌_20130619.pptx (144.56KB)  

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 : Study on Light Absorption and Carrier Transport of Dye Sensitized Solar Cells
2. 연  사 : 이중건 교수 (University of Pittsburgh)
3. 일  시 : 2013년 06월 19일 (수) 오후 17:00 ~ 18:00
4. 장  소 : 서울대학교 신공학관(301동) 1512-2호 세미나실
내  용 :
Abstract :
Significant progress has been made in the past few decades on the fabrication of various nanostructured materials. These emerging materials will enable new opportunities for future technological innovation. 
 The first part of the talk is on the core-shell type plasmonic particles whose extinction spectrum can be effectively controlled by changing the geometric factor of the plasmonic particles. This tuning capability allows for designing the surface plasmons of the core-shell particles to maximize the absorption of the dye molecules with different optical absorption spectrum for dye sensitized solar cells. When the plasmonic particles consisting of metallic nanoshell and dielectric core are incorporated into TiO2 mesoporous photoelectrode, the optical cross-section of dye sensitizers and the energy conversion efficiency of dye sensitized solar cells (DSSCs) are increased.
 In this presentation, I will also introduce my recent research on the 1-dimensional (1-D) nanowires. 1-D nanomaterials are promising alternatives to compromise surface area and diffusion coefficient, since the nanowire and nanotubes are believed to provide a ballistic pathway to the carriers. Recently, we found that both electron mobility and carrier lifetime of the nanowire based photoelectrodes are larger than those of the nanoparticle based photoelectrodes.  In addition, it has been observed that only the electron diffusion coefficient is very sensitive to the surface states of the nanowires.

6. 약  력 :

2000  Ph.D. Materials Science & Engineering, Seoul National University
2002-2007  Technical Staff Member/ Director’s Funded Post-doctor, Los Alamos National Laboratory, USA
2007-2013 Assistant Professor, Department of Mechanical Engineering and Materials Science, University of Pittsburgh, USA  
2013-  Associate Professor, Department of Mechanical Engineering and Materials Science, University of Pittsburgh, USA

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


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