Highly luminescent CuGaxIn1-xSySe2-y nanocrystals from organometallic single-source precursors

Oliver Kluge, Ilan Jen La Plante, Mahmud Diab, Michael Volokh, Ayelet Teitelboim, Taleb Mokari

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

The solution-based thermolysis of the organometallic single-source precursors [(iPr3PCu)4(MeGa)4S6] (1) and [(iPr3PCu)4(MeIn)4Se6] (2) is investigated. Multinary semiconductor nanocrystals with sizes in the range of 3-10 nm are obtained by a simple heating-up process in a solvent mixture of long-chain alkyl thiols and amines. The thiols also serve as a sulfur source and capping ligand for the nanoparticles. By mixing 1 and 2, nanocrystal compositions in the range from CuGaS2 to CuInSSe are accessible. Surface passivation of the nanocrystals with ZnS results in high stability and bright photoluminescence (PL). PL maxima are observed in the spectral range between 600 and 800 nm, depending on the size and composition of the nanocrystals. The highest PL quantum yields exceed 50% and are observed for a gallium to indium ratio of 1:5.

Original languageEnglish
Pages (from-to)4657-4662
Number of pages6
JournalJournal of Materials Chemistry C
Volume3
Issue number18
DOIs
StatePublished - 14 May 2015

ASJC Scopus subject areas

  • Chemistry (all)
  • Materials Chemistry

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