High performance solid-state PbS/CuS hetero-nanostructured quantum dots-sensitized solar cells

O. Hoon Kwon, Jin Hyuck Heo, Soowung Park, Sang Wook Kim, Sang Hyuk Im

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

PbS/CuS hetero-nanostructured (HNS) quantum dots(QDs) with finely controlled PbS core-size (˜3, ˜5, and ˜7 nm) and CuS content (4, 7, 11, 14, 17, and 45 mol%) were successfully synthesized via the suppressed cationic exchange reaction rate by reducing the reaction temperature down to −3 °C. By the precise synthesis of the PbS/CuS HNS QDs, we found that the PbS/CuS HNS QDs with ˜3 nm in core-size and 14 mol% CuS have the most effective charge separation/injection from the HNS QDs to the mesoscopic TiO 2 electron conductor, thereby the sensitized solar cells exhibited high power conversion efficiency of 9.3%.

Original languageEnglish
Pages (from-to)164-170
Number of pages7
JournalJournal of Industrial and Engineering Chemistry
Volume75
DOIs
Publication statusPublished - 2019 Jul 25

Keywords

  • Cationic exchange
  • CuS
  • Hetero-nanostructure
  • PbS
  • Quantum dots
  • Solar cells

ASJC Scopus subject areas

  • Chemical Engineering(all)

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