吉林大学学报(理学版)

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Nd掺杂对ZnO带隙及染料敏化太阳能电池光电性能的影响

张凌云, 贾若琨, 孙旭辉, 张瑛洁, 刘春光   

  1. 东北电力大学 化学工程学院, 吉林 吉林 132012
  • 收稿日期:2014-02-07 出版日期:2014-11-26 发布日期:2014-12-11
  • 通讯作者: 张凌云 E-mail:zhangly@mail.nedu.edu.cn

Influence of Nd Doping on Band Gap and PhotovoltaicPerformances of DyeSensitized Solar Cell Based on ZnO

ZHANG Lingyun, JIA Ruokun, SUN Xuhui, ZHANG Yingjie, LIU Chunguang   

  1. School of Chemical Engineering, Northeast Dianli University, Jilin 132012, Jilin Province, China
  • Received:2014-02-07 Online:2014-11-26 Published:2014-12-11
  • Contact: ZHANG Lingyun E-mail:zhangly@mail.nedu.edu.cn

摘要:

利用溶液法制备Nd掺杂ZnO, 并通过X射线衍射(XRD)、 紫外可见吸收光谱(UVVis)和光电流密度光电压曲线研究Nd掺杂对ZnO带隙及染料敏化太
阳能电池光电性能的影响. 结果表明: Nd原子取代Zn原子掺杂到ZnO晶格中; Nd掺杂使ZnO带隙窄化, 导致其UVVis谱吸收带边红移, 且随着掺杂摩尔分数的增加, 红移和窄化程度增大; 掺杂Nd可提高电池的光电流及光电转换效率, 当掺杂Nd的摩尔分数分别为0.5%,1.0%,1.5%时, 其光电流密度分别为9.51,13.01,10.79 mA/cm2, 光电转换效率分别为2.28%,2.84%,2.48%.

关键词: 太阳能电池, 氧化锌, Nd掺杂, 带隙窄化, 光电性能

Abstract:

Nddoped ZnO was prepared by a simple solution method. Xray diffraction analysis (XRD) demonstrates that Nd atoms have been successfully incorporated into the lattice of ZnO. UVVisible absorption spectra (UVVis) show that Nd doping has led to a red shift of the absorption edge of ZnO to
the visiblelightregion, which shows Nd doping has narrowed the band gap of ZnO. Nd doping obviously improves the shortcircuit photocurrent density and overall light conversion efficiency of dyesensitized solar cell based on ZnO photoanode. When doping concentrations of Nd were 0.5%,10%, and 1.5% respectively, shortcircuit photocurrent densities  were 9.51,13.01,1079 mA/cm2 respectively,  and overall light conversion efficiencies  were 2.28%,2.84%, and 2.48% respectively.

Key words: solar cell, zinc oxide, Nd doping; bandgap narrowing, photovolatic performance

中图分类号: 

  • O649.2