Photovoltaic Devices with a Low Bandgap Polymer and CdSe Nanostructures Exceeding 3% Efficiency

Smita Dayal, Nikos Kopidakis, Dana C. Olson, David S. Ginley, Garry Rumbles

Research output: Contribution to journalArticlepeer-review

407 Scopus Citations

Abstract

We report the fabrication and measurement of solar cells approaching a power conversion efficiency of 3.2% using a low band gap conjugated polymer poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b;3,4-b′]dithiophene) -alt-4,7-(2,1,3-benzothiadiazole)] and CdSe nanoparticles. These devices exhibit an external quantum efficiency (EQE) of >30% in abroad range of 350-800 nm with a maximum EQE of 55% in a range of 630-720 nm. We also present certified device efficiencies of 3.13% under AM 1.5 illumination.

Original languageAmerican English
Pages (from-to)239-242
Number of pages4
JournalNano Letters
Volume10
Issue number1
DOIs
StatePublished - 13 Jan 2010

NREL Publication Number

  • NREL/JA-590-47147

Keywords

  • Inorganic-organic photovoltaic devices
  • Low band gap polymer
  • Nanoparticles
  • Power conversion efficiency

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