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°­Á Á¦¸ñ High Efficiency Mesoscopic Solar Cells Based on Inorganic Quantum Dot Sensitizers
÷ºÎÆÄÀÏ Session14_20120821.pptx (143.46KB)  

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1. Á¦  ¸ñ : High Efficiency Mesoscopic Solar Cells Based on Inorganic Quantum Dot Sensitizers
2. ¿¬  »ç : ¹Ú³²±Ô ±³¼ö (¼º±Õ°ü´ë È­ÇаøÇкÎ)
3. ÀÏ  ½Ã : 2012³â  8¿ù 21ÀÏ (È­)  16:00 ~ 17:00
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Abstract : Highly efficient nanostructured solar cells based on quantum dot sensitizers are presented. Inorganic or organic-inorganic hybrid quantum dots are directly deposited on mesoporous TiO2 film using a spin coating or a successive ionic layer absorption and reaction method. Photovoltaic solar cells are constructed by either electrochemical junction or p-i-n junction. For the case of perovskite-type organic-inorganic hybrid sensitizers, conversion efficiency of 6.5% is achieved at AM 1.5G 1 sun illumination when it is contacted with iodide-based redox electrolyte. Further improvement is achieved using a hole transport material, where efficiency as high as 9.7% is achieved based on submicron TiO2 layer. Solid-state device shows much better long-term stability than liquid type. For the case of chalcogenide-based quantum dot sensitizers, photocurrent density of 30 mA/cm2 is achieved at 1 sun by controlling metal-sulfur chemical bonding nature. All the demonstrated photovoltaic properties are by far the highest performance among the reported quantum-dot-sensitized solar cells.

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