Hierarchical ZnO nanorod electrodes: Effect of post annealing on structural and photoelectrochemical performance

Hierarchical ZnO nanorod electrodes: Effect of post annealing on structural and photoelectrochemical performance
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分层ZnO纳米棒电极:后退火对结构和光电化学性能的影响

DOI:
10.1016/j.matlet.2012.11.100
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发表时间:
2013
期刊:
影响因子:
3
通讯作者:
Bhatti I
Bhatti I
中科院分区:
材料科学3区
文献类型:
--
作者:
Bhatti I

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研究了微波和常规退火对化学浴沉积法在掺氟氧化锡(FTO)玻璃衬底上生长ZnO纳米棒的影响。XRD衍射图显示,薄膜结晶度存在差异。微波辐照的ZnO纳米棒的FEG-SEM图像表明,微波辐射引起的烧结之间的个别杆和捆绑起来,从而创建新的杆与大直径,而不显着影响分级棒结构。结果表明,与沉积态薄膜相比,处理后薄膜的内表面积减小。光电化学特性表明,处理后的薄膜的电流密度相比,作为沉积膜的下降。对应于常规的辐射退火ZnO电极的光电流的减少是更显着的,大概是由于杆结构的变形和不良的电荷传输。
The effect of microwave and conventional annealing has been studied on ZnO nanorods grown on fluorine doped tin oxide (FTO) glass substrates by chemical bath deposition. XRD diffractograms revealed that there is a difference in the film crystallinity. FEG-SEM images of microwave irradiated ZnO nanorods indicate that microwave radiation caused sintering between individual rods and bundling them up thereby creating new rods with large diameter, without significantly affecting the hierarchical rod structures. It shows that internal surface area of treated films decreased compared to that of as-deposited film. The photoelectrochemical characteristics showed a decrease in the current density of the treated films compared to that of as-deposited film. The reduction of the photocurrent corresponding to conventional radiant annealed ZnO electrodes is more pronounce presumably due to deformation of rod structure and poor charge transport.
通过微波辐照增强 AACVD 生产的 TiO2 电极的光电化学性能,同时保留纳米结构
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