三维纳米结构半导体光电极设计及光解水制氢应用
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摘要
利用半导体光电极直接将太阳能转换成化学能的光电化学分解水过程,可同时有效解决能源需求和降低环境污染问题,被认为未来最理想和有前途的清洁能源利用形式。本文主要设计制备了几种三维有序纳米结构光电极(如三维光子晶体,海胆状TiO_2,ZnO et al),研究了其在光电化学制氢方面的应用,并讨论了结构设计、量子点敏化、金属表面等离激元效应等手段对改善光解水性能的影响规律。光解水测试研究表明有序结构设计能有效控制光的传播路径和吸收,改善载流子传输效率,提高能量转换效率。
In this text, we proposed to design three dimensionally ordered nanostructured semiconductor photoelectrodes like TiO_2 and ZnO inverse opals, sea urchin like structures, Si nanowires arrays for PEC water splitting application. The effects of structural densign, quantum dos sensitization and surface plasmonic resonances on the PEC performance improvement are discussed. The PEC water splitting performances measurements indicated that the ordered structures can effectively control the propagation and absorption of light and improve the charge transportation efficiency, as result of increasing the energy conversion efficiency
引文
1.C.Li,X.T.Zhu,H.F.Zhang,Z.C.Zhu,B.Liu,C.W.Cheng.*3D Zn O/Au/Cd S Sandwich Structured Inverse Opal as Photoelectrochemical Anode with Improved Performance.Adv.Mater.Interface.2015,2,1500428.
    2.Cheng.C.W.,Ren.W.N.,Zhang.H.F.3D Ti O2/Sn O2 hierarchically branched nanowires on transparent FTO substrate as photoanode for efficient water splitting.Nano Energy 2014,5,132-138.

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