Controlled Growth of ZnO Nanowire with Application to Dye-Sensitized Solar Cells

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Controlled Growth of ZnO Nanowire with Application to Dye-Sensitized Solar Cells

更新时间：2025-07-09

- Controlled Growth of ZnO Nanowire with Application to Dye-Sensitized Solar Cells
- Vol. 47, Issue 1, Pages: 90-95(2013)
- 作者机构：
  
  1. 西安交通大学材料科学与工程学院,西安,710049
  2. 西安交通大学金属材料强度国家重点实验室,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201301018
  CLC： O614.24
- Online First：10 January 2013，
  
  Published：2013
- 稿件说明：
移动端阅览
Controlled Growth of ZnO Nanowire with Application to Dye-Sensitized Solar Cells[J]. 2013, 47(1): 90-95.
DOI：

Controlled Growth of ZnO Nanowire with Application to Dye-Sensitized Solar Cells[J]. 2013, 47(1): 90-95. DOI： 10.7652/xjtuxb201301018.

摘要

利用旋涂法在FTO导电玻璃板上制备一层ZnO籽晶

再经水热生长

得到杂乱的和规整的ZnO纳米线; 重复该过程

制备得到带分枝结构的ZnO纳米线。利用X射线衍射仪、扫描电子显微镜、紫外-可见分光光度计和光电转换测试系统等手段

研究了水热生长条件对ZnO形态和晶体结构的影响

以及它们对染料吸附率和光电转换效率的影响。结果表明:在生长液中添加聚乙烯亚胺有利于ZnO籽晶择优取向单向生长; 原位生长形成的ZnO纳米线均为纤锌矿结构

结晶性良好; 影响带分支结构ZnO纳米线制备的关键因素为悬挂籽晶次数和晶化热处理升温速率。解吸附和光电性能测试结果表明

相对于初始的ZnO纳米线

带分枝结构的ZnO纳米线具有更高的染料吸附率和太阳能转换效率。

Abstract

The FTO glass coated with ZnO seed layer was prepared by spin-coating

and it was further placed in growth solution to form messy and neat ZnO nanowires(NWs)via hydrothermal growth. By repeating the procedure

branched ZnO NWs were obtained. X-ray diffraction

UV-visible spectrophotometer

and photoelectric conversion test system were employed to analyzed the influences of growth conditions on the morphology and crystal structure of ZnO NWs

and on dye adsorption ratio and conversion efficiency. The results show that the addition of polyethylenimine to the growth solution facilitates the growth of ZnO seed along the optimal crystal face. ZnO NWs are of hexagonal wurtzite structure with good crystallinity. The key factors affecting the formation of branched ZnO NWs are the number of hanging seeds and the heating rate of crystallization heat treatment. Compared with bare ZnO NWs

branched ZnO NWs show higher dye adsorption ratio and conversion efficiency.

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Keywords

references

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