Facile synthesis of uniform large-sized InP nanocrystal quantum dots using tris(tert-butyldimethylsilyl)phosphine

Somyoung Joung, Sungwoo Yoon, Chang Soo Han, Youngjo Kim, Sohee Jeong

Research output: Contribution to journalArticlepeer-review

58 Citations (Scopus)

Abstract

Colloidal III-V semiconductor nanocrystal quantum dots [NQDs] have attracted interest because they have reduced toxicity compared with II-VI compounds. However, the study and application of III-V semiconductor nanocrystals are limited by difficulties in their synthesis. In particular, it is difficult to control nucleation because the molecular bonds in III-V semiconductors are highly covalent. A synthetic approach of InP NQDs was presented using newly synthesized organometallic phosphorus [P] precursors with different functional moieties while preserving the P-Si bond. Introducing bulky side chains in our study improved the stability while facilitating InP formation with strong confinement at a readily low temperature regime (210°C to 300°C). Further shell coating with ZnS resulted in highly luminescent core-shell materials. The design and synthesis of P precursors for high-quality InP NQDs were conducted for the first time, and we were able to control the nucleation by varying the reactivity of P precursors, therefore achieving uniform large-sized InP NQDs. This opens the way for the large-scale production of high-quality Cd-free nanocrystal quantum dots.

Original languageEnglish
Article number93
JournalNanoscale Research Letters
Volume7
DOIs
Publication statusPublished - 2012

Bibliographical note

Funding Information:
This work was supported by the Global Frontier R&D Program by the Center for Multiscale Energy Systems funded by the National Research Foundation under the Ministry of Education, Science, and Technology, the Industrial Core Technology Development Program funded by the Ministry of Knowledge Economy (No. 10035274), and the Basic Research Fund from KIMM

Keywords

  • Colloidal synthesis
  • Indium phosphide nanocrystal quantum dot
  • Nontoxic
  • Phosphorus precursor

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics

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