Nitrogen-Doped Carbon Dots for “green” Quantum Dot Solar Cells

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• 作者：Hao Wang ; Pengfei Sun ; Shan Cong ; Jiang Wu ; Lijun Gao…
• 关键词：Carbon dots ; Nitrogen ; doped ; Quantum dot solar cells
• 刊名：Nanoscale Research Letters
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：11
• 期：1
• 全文大小：1,556 KB
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• 作者单位：Hao Wang (1)
  Pengfei Sun (1)
  Shan Cong (1)
  Jiang Wu (2)
  Lijun Gao (1)
  Yun Wang (1)
  Xiao Dai (1)
  Qinghua Yi (1)
  Guifu Zou (1)
  
  1. College of Physics, Optoelectronics and Energy & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, 215006, People’s Republic of China
  2. Department of Electronic and Electrical Engineering, University College London, Torrington Place, London, UK
  
• 刊物主题：Nanotechnology; Nanotechnology and Microengineering; Nanoscale Science and Technology; Nanochemistry; Molecular Medicine;
• 出版者：Springer US
• ISSN：1556-276X

文摘

Considering the environment protection, “green” materials are increasingly explored for photovoltaics. Here, we developed a kind of quantum dots solar cell based on nitrogen-doped carbon dots. The nitrogen-doped carbon dots were prepared by direct pyrolysis of citric acid and ammonia. The nitrogen-doped carbon dots’ excitonic absorption depends on the N-doping content in the carbon dots. The N-doping can be readily modified by the mass ratio of reactants. The constructed “green” nitrogen-doped carbon dots solar cell achieves the best power conversion efficiency of 0.79 % under AM 1.5 G one full sun illumination, which is the highest efficiency for carbon dot-based solar cells. Keywords Carbon dots Nitrogen-doped Quantum dot solar cells