High-performance quantum-dot solids via elemental sulfur synthesis

Mingjian Yuan, Kyle W. Kemp, Susanna Thon, Jinyoung Kim, Kang Wei Chou, Aram Amassian, E. H. Sargent

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

An elemental-sulfur-based synthesis is reported, which, combined with processing to improve the size dispersion and passivation, results in a low-cost high-quality platform for small-bandgap PbS-CQD-based devices. Size-selective precipitation and cadmium chloride passivation are used to improve the power conversion efficiency of 1 eV bandgap CQD photovoltaic devices dramatically, which leads to record power conversion efficiency for a 1 eV PbS CQD solar cell of 5.4%. © 2014 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
Original languageEnglish (US)
Pages (from-to)3513-3519
Number of pages7
JournalAdvanced Materials
Volume26
Issue number21
DOIs
StatePublished - Mar 21 2014

ASJC Scopus subject areas

  • Mechanics of Materials
  • Materials Science(all)
  • Mechanical Engineering

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