Facile synthesis of colloidal InAs nanocrystals using triphenylarsine as an arsenic source

Hideo Uesugi, Masao Kita, Takahisa Omata

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


Colloidal InAs nanocrystals (NCs) were synthesized by heating an organometallic solution, containing triphenylarsine as the arsenic source. Because the triphenylarsine is quite stable in ambient conditions at room temperature, the reaction is easy to handle compared with conventional synthesis using tris(trimethylsilyl)arsine. The average size of InAs NCs obtained was varied in the range from 12 nm to 20 nm according to the reaction time, and their optical gap was larger than that of the bulk InAs because of quantum size effect. The reaction mechanism of InAs NCs formation was discussed based on the infrared absorption spectra of reaction solutions, and formation of a reaction intermediate was suggested during the long induction period, ≈80 min, of InAs NCs formation.

Original languageEnglish
Pages (from-to)39-43
Number of pages5
JournalJournal of Crystal Growth
Publication statusPublished - 2014 Nov 1
Externally publishedYes


  • A1. Nanostructures
  • B1. Inorganic compounds
  • B1. Nanomaterials
  • B2. Semiconducting III-V materials
  • B2. Semiconducting indium compounds
  • B3. Solar cells

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Inorganic Chemistry
  • Materials Chemistry


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