Fabrication and optical properties of CdSe/ZnS core/shell quantum-dot multilayer film and hybrid organic/inorganic light-emitting diodes fabricated by using layer-by-layer assembly

Soon Il Jung, Ilgu Yun, Il Ki Han, Sung M. Cho, Joo In Lee

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We studied the effects of surface passivation on the growth of CdSe quantum dots (QDs). In addition, we fabricated QD thin films and light-emitting diodes (LEDs). A chemical colloidal method was used to grow CdSe QDs and their characteristics were evaluated by using a photoluminescence (PL) measurement. An effective surface passivation of mono-disperse CdSe QDs was achieved by overcoating them with ZnS. Layer-by-layer assembly was used to fabricate QD thin films with molecular order and stability. The PL spectra of the QD thin films indicate that the QDs were successfully assembled into thin film. Finally, we obtained electroluminescence images from the active layer of the QD-LED as a function of the injection current.

Original languageEnglish
Pages (from-to)1891-1894
Number of pages4
JournalJournal of the Korean Physical Society
Volume52
Issue number6
DOIs
Publication statusPublished - 2008 Jan 1

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light emitting diodes
assembly
quantum dots
optical properties
fabrication
thin films
passivity
photoluminescence
electroluminescence
injection

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

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title = "Fabrication and optical properties of CdSe/ZnS core/shell quantum-dot multilayer film and hybrid organic/inorganic light-emitting diodes fabricated by using layer-by-layer assembly",
abstract = "We studied the effects of surface passivation on the growth of CdSe quantum dots (QDs). In addition, we fabricated QD thin films and light-emitting diodes (LEDs). A chemical colloidal method was used to grow CdSe QDs and their characteristics were evaluated by using a photoluminescence (PL) measurement. An effective surface passivation of mono-disperse CdSe QDs was achieved by overcoating them with ZnS. Layer-by-layer assembly was used to fabricate QD thin films with molecular order and stability. The PL spectra of the QD thin films indicate that the QDs were successfully assembled into thin film. Finally, we obtained electroluminescence images from the active layer of the QD-LED as a function of the injection current.",
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Fabrication and optical properties of CdSe/ZnS core/shell quantum-dot multilayer film and hybrid organic/inorganic light-emitting diodes fabricated by using layer-by-layer assembly. / Jung, Soon Il; Yun, Ilgu; Han, Il Ki; Cho, Sung M.; Lee, Joo In.

In: Journal of the Korean Physical Society, Vol. 52, No. 6, 01.01.2008, p. 1891-1894.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Fabrication and optical properties of CdSe/ZnS core/shell quantum-dot multilayer film and hybrid organic/inorganic light-emitting diodes fabricated by using layer-by-layer assembly

AU - Jung, Soon Il

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AU - Cho, Sung M.

AU - Lee, Joo In

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AB - We studied the effects of surface passivation on the growth of CdSe quantum dots (QDs). In addition, we fabricated QD thin films and light-emitting diodes (LEDs). A chemical colloidal method was used to grow CdSe QDs and their characteristics were evaluated by using a photoluminescence (PL) measurement. An effective surface passivation of mono-disperse CdSe QDs was achieved by overcoating them with ZnS. Layer-by-layer assembly was used to fabricate QD thin films with molecular order and stability. The PL spectra of the QD thin films indicate that the QDs were successfully assembled into thin film. Finally, we obtained electroluminescence images from the active layer of the QD-LED as a function of the injection current.

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