Enhanced photovoltaic performance of dye-sensitized solar cells using TiO2-decorated ZnO nanorod arrays grown on zinc foil
Enhanced photovoltaic performance of dye-sensitized solar cells using TiO2-decorated ZnO nanorod arrays grown on zinc foil
复制标题
使用生长在锌箔上的 TiO2 修饰的 ZnO 纳米棒阵列增强染料敏化太阳能电池的光伏性能
DOI：
10.1016/j.jpowsour.2011.10.114
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发表时间：
2012-03-01
影响因子：
9.2
通讯作者：
Ma, Baojiao
中科院分区：
文献类型：
--
作者：
Guo, Taibo;Chen, Yiqing;Ma, Baojiao
采用水热氧化法和溶胶-凝胶法相结合的两步法制备了直接生长在锌片上的TiO 2修饰ZnO纳米棒阵列，并将其应用于染料敏化太阳能电池（DSSC）。其染料的吸收和光捕获增加的装饰与二氧化钛颗粒层，导致在增强的光电流密度。此外，通过抑制界面载流子复合，DSSC的开路电压（V-OC）得到改善。其结果是，TiO 2修饰的ZnO光阳极的转换效率（η）增加了1.78倍，与裸ZnO相比。电化学阻抗谱（EIS）分析表明，在ZnO纳米棒阵列表面沉积TiO 2颗粒能有效延长电子寿命，降低电子复合率。(C)2011 Elsevier B. V.保留所有权利。
TiO2-decorated ZnO nanorod arrays directly grown on zinc foil are fabricated by a two-step approach combining hydrothermal oxidation and a sol-gel process for dye-sensitized solar cells (DSSCs) applications. Its dye absorption and light harvesting are increased by decoration with a TiO2 particle layer, resulting in enhancement of the photocurrent density. In addition, the open-circuit voltage (V-OC) of the DSSCs is improved by suppressing interfacial carrier recombination. As a result, the conversion efficiency (eta) of the TiO2-decorated ZnO photoanode is increased by a factor of 1.78 compared with that of the bare ZnO. The electrochemical impedance spectroscopy (EIS) analysis shows that depositing TiO2 particles on the surface of the ZnO nanorod arrays can effectively extend electron lifetime and decrease electron recombination rate. (C) 2011 Elsevier B.V. All rights reserved.