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°­Á Á¦¸ñ Multi-scale optical engineering toward black thin-film photovoltaic cells
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1. Á¦  ¸ñ : Multi-scale optical engineering toward black thin-film photovoltaic cells
2. ¿¬  »ç : ÀÌÁ¤¿ë ±³¼ö(KAIST Graduate School of Energy, Environment, Water, and Sustainability)
3. ÀÏ  ½Ã : 2014³â 4¿ù 18ÀÏ (±Ý) ¿ÀÈÄ 17:00 ~ 18:00
4. Àå  ¼Ò : ¼­¿ï´ëÇб³ ½Å°øÇаü(301µ¿) 117È£ ¼¼¹Ì³ª½Ç

5. ³»  ¿ë :
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. ¾à  ·Â :
KAIST EEWS´ëÇпø Á¶±³¼ö 2010 - ÇöÀç
Ph.D. Electrical Engineering, Stanford University
M.S. Electrical Engineering, Seoul National University
B.S. Electrical Engineering, Seoul National University


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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