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Portrait of Tönu Pullerits; Photo: Kennet Ruona

Tönu Pullerits

Professor

Portrait of Tönu Pullerits; Photo: Kennet Ruona

Investigation of the role of Mn dopant in CdS quantum dot sensitized solar cell.

Author

  • T. Shen
  • J. Tian
  • L. Lv
  • C. Fei
  • Y. Wang
  • Tönu Pullerits
  • G. Cao

Summary, in English

Mn-doping into CdS quantum dots (QDs) has been demonstrated a useful way to enhance the power conversion efficiency (PCE) of quantum dot sensitized solar cells (QDSCs), the detailed systematic study is needed to get a better fundamental understanding. This work focuses on the study of the effects of Mn dopant on light harvesting, charge transfer, and charge collection of the solar cells. The results indicate that the Mn-doping into CdS QDs increases the light absorbance and extends the light absorption range, which results in the enhancement of the photo-generated current density. In addition, both the electron transport rate and the electron diffusion length are also increased with the introduction of Mn dopant. So the charge collection efficiency (ηcc) of the solar cell increases from 89.9% for CdS sample to 96.7% for Mn/CdS sample. As a result, the PCE of Mn/CdS QDSC reaches 3.29%, which is much higher than that of CdS QDSC (2.01%).

Department/s

  • Chemical Physics
  • NanoLund: Center for Nanoscience

Publishing year

2016

Language

English

Pages

62-69

Publication/Series

Electrochimica Acta

Document type

Journal article

Publisher

Pergamon Press Ltd.

Topic

  • Physical Chemistry
  • Condensed Matter Physics

Status

Published

ISBN/ISSN/Other

  • ISSN: 0013-4686