Intense visible luminescence in CdSe quantum dots by efficiency surface passivation with H 2O molecules

Hyeoung Woo Park; Do Hyung Kim

doi:10.1155/2012/892506

Intense visible luminescence in CdSe quantum dots by efficiency surface passivation with H ₂O molecules

Hyeoung Woo Park, Do Hyung Kim

Department of Physics

Kyungpook National University

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

8 Scopus citations

Abstract

We have investigated the effect of water (H2O) cooling and heat treatment on the luminescence efficiency of core CdSe quantum dots (QDs). The photoluminescence (PL) quantum yield of the CdSe QDs was enhanced up to ∼85, and some periodic bright points were observed in wide color ranges during the heat treatment of QDs mixed with H2O. The PL enhancement of QDs could be attributed to the recovery of QDs surface traps by unreacted ligands confined within the hydrophilic H2O molecule containers.

Original language	English
Article number	892506
Journal	Journal of Nanomaterials
Volume	2012
DOIs	https://doi.org/10.1155/2012/892506
State	Published - 2012

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title = "Intense visible luminescence in CdSe quantum dots by efficiency surface passivation with H 2O molecules",

abstract = "We have investigated the effect of water (H2O) cooling and heat treatment on the luminescence efficiency of core CdSe quantum dots (QDs). The photoluminescence (PL) quantum yield of the CdSe QDs was enhanced up to ∼85, and some periodic bright points were observed in wide color ranges during the heat treatment of QDs mixed with H2O. The PL enhancement of QDs could be attributed to the recovery of QDs surface traps by unreacted ligands confined within the hydrophilic H2O molecule containers.",

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doi = "10.1155/2012/892506",

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AU - Kim, Do Hyung

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N2 - We have investigated the effect of water (H2O) cooling and heat treatment on the luminescence efficiency of core CdSe quantum dots (QDs). The photoluminescence (PL) quantum yield of the CdSe QDs was enhanced up to ∼85, and some periodic bright points were observed in wide color ranges during the heat treatment of QDs mixed with H2O. The PL enhancement of QDs could be attributed to the recovery of QDs surface traps by unreacted ligands confined within the hydrophilic H2O molecule containers.

AB - We have investigated the effect of water (H2O) cooling and heat treatment on the luminescence efficiency of core CdSe quantum dots (QDs). The photoluminescence (PL) quantum yield of the CdSe QDs was enhanced up to ∼85, and some periodic bright points were observed in wide color ranges during the heat treatment of QDs mixed with H2O. The PL enhancement of QDs could be attributed to the recovery of QDs surface traps by unreacted ligands confined within the hydrophilic H2O molecule containers.

UR - https://www.scopus.com/pages/publications/84863252870

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DO - 10.1155/2012/892506

M3 - Article

AN - SCOPUS:84863252870

SN - 1687-4110

VL - 2012

JO - Journal of Nanomaterials

JF - Journal of Nanomaterials

M1 - 892506

ER -

Intense visible luminescence in CdSe quantum dots by efficiency surface passivation with H ₂O molecules

Abstract

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