Antireflection and band gap extension effects of ZnO nanocrystalline films grown on ITO-coated glasses by low temperature process

作者：Bao Xichang; Yang Yun; Yang Ailing; Wang Ning; Wang Ting; Du Zhengkun; Yang Chunpeng; Wen Shuguang; Yang Renqiang^*

来源：Materials Science and Engineering B-Solid State Materials for Advanced Technology, 2013, 178(4): 263-266.

DOI：10.1016/j.mseb.2012.11.008

• Antireflection effect
• ZnO nanocrystalline films
• Band gap

Zinc oxide (ZnO) nanocrystalline films coated on indium tin oxides (ITO, 90:10 wt%) glasses were prepared by low temperature process. The thin films were composed of uniform nanoparticles with average diameter around 8.4 nm. All samples exhibited excellent optical antireflective phenomena, and the maximum transmission reached 92.8% for the sample spin coated at 1500 rpm at 453 nm, improved by 21.5%. The antireflective results were explained by the coherence theory. And the antireflective effects were induced by the ITO and ZnO films. The calculated thicknesses of the ZnO films agreed well with the experimental results. The theoretical calculated band gap from the average diameter of ZnO nanoparticles was also well consistent with the experimental ones obtained from the optical transmission spectra. This result was promising for applications in organic solar cells.

• 出版日期2013-3-1
• 单位中国科学院青岛生物能源与过程研究所; 中国海洋大学