Crystal of semiconducting quantum dots built on covalently bonded T5 [In28Cd6S54]-12

The largest supertetrahedral cluster in solid state

Weiping Su, Xiaoying Huang, Jing Li, Huaxiang Fu

Research output: Contribution to journalArticle

80 Citations (Scopus)

Abstract

Periodic array of nanoparticles is essential for practical applications in optical devices. Periodic dot arrays often exhibit very interesting collective phenomenon. We report a periodic crystal of InCdS pseudo-T5 nanocluster, the largest supertetrahedral cluster found thus far in solid state. Each InCdS cluster behaves like a nanoparticle with the same size. Unlike the array of colloidal dots in which the dot-dot separation is large (∼5 nm), the neighboring T5 clusters in [In28Cd6S54]·[(CH3)4N]12[(HSCH2COOH)2]3.5 crystal form a natural point contact by sharing covalently bonded S atoms. Both experimental and theoretical studies show that this crystal is a semiconductor with a band gap of 3.0 eV.

Original languageEnglish
Pages (from-to)12944-12945
Number of pages2
JournalJournal of the American Chemical Society
Volume124
Issue number44
DOIs
Publication statusPublished - Nov 6 2002

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Quantum Dots
Nanoparticles
Semiconductor quantum dots
Optical Devices
Semiconductors
Crystals
Theoretical Models
Nanoclusters
Point contacts
Optical devices
Energy gap
Semiconductor materials
Atoms

ASJC Scopus subject areas

  • Chemistry(all)

Cite this

Crystal of semiconducting quantum dots built on covalently bonded T5 [In28Cd6S54]-12 : The largest supertetrahedral cluster in solid state. / Su, Weiping; Huang, Xiaoying; Li, Jing; Fu, Huaxiang.

In: Journal of the American Chemical Society, Vol. 124, No. 44, 06.11.2002, p. 12944-12945.

Research output: Contribution to journalArticle

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