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這片science里面的插圖,很令人費解,大家來討論下
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![]() Fig. 1. Schematic of Ni/n-Si photoanode. (A) Structure of 2-nm Ni-coated n-Si anode (top) and proposed approximate energy band diagram (bottom). The ultrathin Ni/NiOx and the electrolyte form an effective layer interfacing with Si, affording a high built-in potential fs and photovoltage. (B) Structure of 5- to 20-nm Ni-coated n-Si anode (top) and a typical Ni/n-Si Schottky barrier formed between 5- to 20-nm Ni and n-Si, with built-in potential fs and photovoltage lower than the 2-nm Ni/n-Si case in (A). 這個Ni層變厚了,費米能級為什么變高了,作者也沒有給出證據(jù)和解釋。 文章中說內建電場可以使onset potential提前,但是肖特基能壘又使之后移,有沒有互相矛盾。 原文鏈接: http://www.sciencemag.org/content/342/6160/836.full[ Last edited by knightxx on 2014-2-22 at 16:20 ] |
» 搶金幣啦!回帖就可以得到:
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