Controllable synthesis of CdS quantum dots and their photovoltaic application on quantum-dot-sensitized ZnO nanorods

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• 作者：Chunyan Zhou ; Liya Zhou ; Jiehua Xu ; Yufei Gan
• 关键词：Quantum dots ; Nanorods ; Photovoltaic performance
• 刊名：Journal of Solid State Electrochemistry
• 出版年：2016
• 出版时间：February 2016
• 年：2016
• 卷：20
• 期：2
• 页码：533-540
• 全文大小：1,490 KB
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• 作者单位：Chunyan Zhou (1)
  Liya Zhou (1)
  Jiehua Xu (1)
  Yufei Gan (1)
  
  1. School of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
  
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Physical Chemistry
  Analytical Chemistry
  Industrial Chemistry and Chemical Engineering
  Characterization and Evaluation Materials
  Condensed Matter
  Electronic and Computer Engineering
  
• 出版者：Springer Berlin / Heidelberg
• ISSN：1433-0768

文摘

Water-dispersible l-cysteine (l-cys)-capped cadmium sulfide (CdS) quantum dots (QDs) with a cubic structure and excellent crystallinity are synthesized by a one-pot method in aqueous solution, and the dots are subsequently used to grow QD-decorated zinc oxide (ZnO) nanorod (NR) heterostructures by the direct adsorption technique. Adjustment of the reaction time from 0.5 to 9 h allows tuning of the size of the synthesized CdS QDs from 2.30 to 2.78 nm. Quantum size effects lead to red shifting of the CdS QD absorption peak from 385 to 418 nm. The photoconversion efficiency (η) of CdS QD-sensitized ZnO NRs is enhanced by 250 % compared with that of unmodified ZnO NRs. Keywords Quantum dots Nanorods Photovoltaic performance