發(fā)布時間：2018-06-12 09:29

  本文選題：一維二氧化鈦 + 染料敏化太陽能電池�。� 參考：《材料導報》2017年17期

【摘要】：二氧化鈦由于具有合適的禁帶寬度、良好的光電性能、制作工藝簡單等特點,目前廣泛應用于染料敏化太陽能電池中。其中,大部分光陽極主要是由納米顆粒組成,但納米顆粒不利于電子和空穴的分離及傳輸、染料敏化太陽能電池的光電轉(zhuǎn)化效率的提升。因此,可采用一維納米結(jié)構(gòu)光陽極替換納米顆粒,這有利于提升染料敏化太陽能電池的光電轉(zhuǎn)化效率。一維納米材料具有較少的晶界,可為電荷提供通道、加速電子的傳輸,且能有效減少空穴/電子的復合,減少電子與染料的復合,從而提高效率。同時一維二氧化鈦其較大的比表面積,不僅有利于染料吸附量增加,而且能有效提高電流密度。綜述了幾種一維二氧化鈦制備方法的最新研究進展,分析了不同制備方法對二氧化鈦光陽極的能帶結(jié)構(gòu)、光吸收特性、染料吸附量和電子傳輸過程的影響,介紹了近幾年一維二氧化鈦在染料敏化太陽能中的應用。最后,對一維二氧化鈦在染料敏化太陽能電池中的應用進行了展望。
[Abstract]:Titanium dioxide is widely used in dye sensitized solar cells due to its advantages of suitable bandgap, good photoelectric performance and simple fabrication process. Most of the photoanodes are mainly composed of nanoparticles, but the nanoparticles are not conducive to the separation and transport of electrons and holes, and the photoconversion efficiency of dye sensitized solar cells is improved. Therefore, one dimensional nano-structure photoanode can be used to replace the nanoparticles, which is helpful to improve the photoconversion efficiency of dye sensitized solar cells. One-dimensional nanocrystalline materials have less grain boundaries, which can provide a channel for charge, accelerate electron transport, reduce hole / electron recombination, reduce electron and dye recombination, and improve the efficiency. At the same time, the larger specific surface area of one-dimensional titanium dioxide not only helps to increase the adsorption capacity of dyes, but also can effectively increase the current density. The latest research progress of several one-dimensional titanium dioxide preparation methods is reviewed. The effects of different preparation methods on the energy band structure, photoabsorption characteristics, dye adsorption capacity and electron transport process of TIO _ 2 photoanode are analyzed. The application of one-dimensional titanium dioxide in dye-sensitized solar energy in recent years is introduced. Finally, the application of one-dimensional titanium dioxide in dye-sensitized solar cells is prospected.
【作者單位】： 湖北大學有機化工新材料湖北省協(xié)同創(chuàng)新中心功能材料綠色制備與應用教育部重點實驗室;湖北大學材料科學與工程學院;
【基金】：湖北省科技廳項目(2016AAA034;2016CFB507) 國家自然科學基金(51572072;51603063;21402045)
【分類號】：TM914.4

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