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°­ÁÂÀϽà 2013³â 6¿ù 19ÀÏ  ¿ÀÈÄ 17:00 ~ 18:30
°­Á Á¦¸ñ Study on Light Absorption and Carrier Transport of Dye Sensitized Solar Cells
÷ºÎÆÄÀÏ ¿¡³ÊÁö°­ÁÂ_20130619.pptx (144.56KB)  

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1. Á¦  ¸ñ : Study on Light Absorption and Carrier Transport of Dye Sensitized Solar Cells
2. ¿¬  »ç : ÀÌÁß°Ç ±³¼ö (University of Pittsburgh)
3. ÀÏ  ½Ã : 2013³â 06¿ù 19ÀÏ (¼ö) ¿ÀÈÄ 17:00 ~ 18:00
4. Àå  ¼Ò : ¼­¿ï´ëÇб³ ½Å°øÇаü(301µ¿) 1512-2È£ ¼¼¹Ì³ª½Ç
³»  ¿ë :
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. ¾à  ·Â :

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

¹®  ÀÇ : ¸ÖƼ½ºÄÉÀÏ ¿¡³ÊÁö ½Ã½ºÅÛ ¿¬±¸´Ü ¿¬±¸Áö¿øº»ºÎ (¢Î 889-6669,6670)
           ³²±âÅ ±³¼ö (Àç·á°øÇкÎ), ÃÖ¸¸¼ö ±³¼ö (±â°èÇ×°ø°øÇкÎ) 


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