Colloidal InSb nanocrystals

Wenyong Liu; Angela Y. Chang; Richard D. Schaller; Dmitri V. Talapin

doi:10.1021/ja309821j

Colloidal InSb nanocrystals

Wenyong Liu, Angela Y. Chang, Richard D. Schaller, Dmitri V. Talapin^*

^*Corresponding author for this work

Chemistry

Research output: Contribution to journal › Article › peer-review

121 Scopus citations

Abstract

We report the colloidal synthesis of monodisperse nanocrystals (NCs) of InSb, which is an important member of III-V semiconductor family. Colloidal InSb NC quantum dots showed well-resolved excitonic transitions in the near-infrared spectral range, with the optical band gaps tunable from ∼1.03 eV (1200 nm) to ∼0.71 eV (1750 nm) corresponding to 3.3 and 6.5 nm InSb NCs, respectively. We observed size-tunable band edge photoluminescence that could be significantly enhanced by growing InSb/CdSe or InSb/CdS core-shell nanostructures. Films of InSb NCs capped with S^2- ions showed ambipolar charge transport.

Original language	English (US)
Pages (from-to)	20258-20261
Number of pages	4
Journal	Journal of the American Chemical Society
Volume	134
Issue number	50
DOIs	https://doi.org/10.1021/ja309821j
State	Published - Dec 19 2012

Funding

ASJC Scopus subject areas

General Chemistry
Biochemistry
Catalysis
Colloid and Surface Chemistry

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T1 - Colloidal InSb nanocrystals

AU - Liu, Wenyong

AU - Chang, Angela Y.

AU - Schaller, Richard D.

AU - Talapin, Dmitri V.

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Y1 - 2012/12/19

N2 - We report the colloidal synthesis of monodisperse nanocrystals (NCs) of InSb, which is an important member of III-V semiconductor family. Colloidal InSb NC quantum dots showed well-resolved excitonic transitions in the near-infrared spectral range, with the optical band gaps tunable from ∼1.03 eV (1200 nm) to ∼0.71 eV (1750 nm) corresponding to 3.3 and 6.5 nm InSb NCs, respectively. We observed size-tunable band edge photoluminescence that could be significantly enhanced by growing InSb/CdSe or InSb/CdS core-shell nanostructures. Films of InSb NCs capped with S2- ions showed ambipolar charge transport.

AB - We report the colloidal synthesis of monodisperse nanocrystals (NCs) of InSb, which is an important member of III-V semiconductor family. Colloidal InSb NC quantum dots showed well-resolved excitonic transitions in the near-infrared spectral range, with the optical band gaps tunable from ∼1.03 eV (1200 nm) to ∼0.71 eV (1750 nm) corresponding to 3.3 and 6.5 nm InSb NCs, respectively. We observed size-tunable band edge photoluminescence that could be significantly enhanced by growing InSb/CdSe or InSb/CdS core-shell nanostructures. Films of InSb NCs capped with S2- ions showed ambipolar charge transport.

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Colloidal InSb nanocrystals

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