Chapter 3: Thin-Film Colloidal Quantum Dot Solar Cells

Matthew Beard, Lenore Kubie

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review

3 Scopus Citations


In under a decade, progress in quantum dot (QD) solar cell design and fabrication have increased PbS QD solar cell efficiencies from 3% to 11.3%. Such solar cells based on colloidal quantum dots offer the potential for a higher limiting power conversion efficiency through the enhancement of multiple exciton generation (MEG). In the MEG process, one photon produces two or more excitons that can contribute to power generation when the photon energy exceeds the semiconductor bandgap. The efficiency of the MEG process has also increased through the design and fabrication of new nanostructures. The fast pace at which QD devices are improving and the potential for a higher limiting efficiency-as MEG can increase the limiting power conversion efficiency (PCE) for a single-junction solar cell from 33% to ~. 45%-demonstrate the large potential of these systems.

Original languageAmerican English
Title of host publicationAdvanced Micro- and Nanomaterials for Photovoltaics: Micro and Nano Technologies
EditorsD. Ginley, T. Fix
Number of pages18
ISBN (Electronic)9780128145029
ISBN (Print)9780128145012
StatePublished - 2019

Bibliographical note

Publisher Copyright:
© 2019 Elsevier Inc. All rights reserved.

NREL Publication Number

  • NREL/CH-5900-72169


  • Multiple exciton generation
  • PbS quantum dots


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