Effect of KOH treatment on structural and photovoltaic properties of ZnO nanorod arrays
详细信息 查看全文
- 作者：Yi ZHOU ; zhouyihn@163.com ; Dang LI ; Yan HUANG ; Wen-hong HE ; Bin XIAO ; Hong LI
- 关键词：ZnO nanorod arrays ; SnO2 transparent conductive glass ; alkali etching ; structural properties photovoltaic properties ; solar cells
- 刊名：Transactions of Nonferrous Metals Society of China
- 出版年：2012
- 出版时间：November, 2012
- 年：2012
- 卷：22
- 期：11
- 页码：2736-2741
- 全文大小：3146 K
文摘
ZnO nanorod arrays (NRs) were synthesized on the fluorine-doped SnO2 transparent conductive glass (FTO) by a simple chemical bath deposition (CBD) method combined with alkali-etched method in potassium hydroxide (KOH) solution. X-ray diffraction (XRD), scanning electron microscopy (SEM) and current¡ªvoltage (I¡ªV) curve were used to characterize the structure, morphologies and optoelectronic properties. The results demonstrated that ZnO NRs had wurtzite structures, the morphologies and photovoltaic properties of ZnO NRs were closely related to the concentration of KOH and etching time, well-aligned and uniformly distributed ZnO NRs were obtained after etching with 0.1 mol/L KOH for 1 h. ZnO NRs treated by KOH had been proved to have superior photovoltaic properties compared with high density ZnO NRs. When using ZnO NRs etched with 0.1 mol/L KOH for 1 h as the anode of solar cell, the conversion efficiency, short circuit current and open circuit voltage, compared with the unetched ZnO NRs, increased by 0.71 % , 2.79 mA and 0.03 V, respectively.