Sequential synthesis and improved photoelectrochemical properties of ZnO/CdTe/CdS nanocable arrays photoanode
Sequential synthesis and improved photoelectrochemical properties of ZnO/CdTe/CdS nanocable arrays photoanode
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DOI：
10.1016/j.ijhydene.2013.05.009
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发表时间：
2013-12
影响因子：
7.2
通讯作者：
Rong Liu;Xina Wang;Hai Zhou;T. Wang;Jieqiong Zhang;Yang Xu;Chao He;Baoyuan Wang;Jun Zhang;Hao Wang
中科院分区：
文献类型：
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作者：
Rong Liu;Xina Wang;Hai Zhou;T. Wang;Jieqiong Zhang;Yang Xu;Chao He;Baoyuan Wang;Jun Zhang;Hao Wang
通过在 ZnO/CdTe 纳米电缆阵列上连续离子吸附和 CdS 反应，制备了 ITO 衬底上垂直排列的 ZnO/CdTe/CdS 纳米电缆阵列，作为太阳能电池的光阳极。通过透射电子显微镜分析，ZnO/CdTe/CdS 纳米电缆中形成了致密的 ZnO/CdTe 和 CdTe/CdS 界面。根据光伏特性，CdTe 和 CdS 壳的厚度均优化为 ∼10 nm。结合可见光区域的高吸收率和良好的晶体质量，ZnO/CdTe/CdS 纳米电缆阵列光阳极在 AM 1.5G 模拟太阳光照射下获得了~12.4 mA/cm2 的光电流密度。
Vertically aligned ZnO/CdTe/CdS nanocable arrays-on-ITO substrate were prepared as photoanodes for solar cells via successive ion adsorption and reaction of CdS on ZnO/CdTe nanocable arrays pre-synthesized by electrochemical deposition of CdTe on ZnO nanowire arrays. Dense ZnO/CdTe and CdTe/CdS interfaces were formed in ZnO/CdTe/CdS nanocables through transmission electron microscope analysis. Based on the photovoltaic properties, the thickness for both CdTe and CdS shells were optimized to ∼10 nm. Together with the high absorption over the visible light region and the good crystal quality as revealed, a photocurrent density of ∼12.4 mA/cm2has been obtained for the ZnO/CdTe/CdS nanocable arrays photoanode under the irradiation of AM 1.5G simulated sunlight.