Cluster synthesis of branched CdTe nanocrystals for use in light-emitting diodes

P.T.K. Chin; J.W. Stouwdam; S.S. Bavel, van; R.A.J. Janssen

doi:10.1088/0957-4484/19/20/205602

Cluster synthesis of branched CdTe nanocrystals for use in light-emitting diodes

P.T.K. Chin, J.W. Stouwdam, S.S. Bavel, van, R.A.J. Janssen

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

20 Citations (Scopus)

Abstract

Highly luminescent cadmium telluride (CdTe) nanocrystals were synthesized using Li2[Cd4(SPh)10] as a reactive Cd cluster compound at relatively low temperature, making it a safe precursor for the large scale synthesis of CdTe nanocrystals. Transmission electron microscopy (TEM) showed that the shape of the CdTe nanocrystals changes from nanorods to branched structures with increasing reaction time. The nanocrystals show high luminescent quantum yields up to 37% for CdTe branched nanostructures, and as high as 52% for CdTe/CdS core–shell heterostructures. CdTe/CdS nanocrystals were used to make light-emitting diodes in combination with organic layers for electron and hole injection. The devices show a maximum luminance efficiency of 0.35 cd A-1.

Original language	English
Article number	205602
Pages (from-to)	205602-1/8
Journal	Nanotechnology
Volume	19
Issue number	20
DOIs	https://doi.org/10.1088/0957-4484/19/20/205602
Publication status	Published - 2008

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title = "Cluster synthesis of branched CdTe nanocrystals for use in light-emitting diodes",

abstract = "Highly luminescent cadmium telluride (CdTe) nanocrystals were synthesized using Li2[Cd4(SPh)10] as a reactive Cd cluster compound at relatively low temperature, making it a safe precursor for the large scale synthesis of CdTe nanocrystals. Transmission electron microscopy (TEM) showed that the shape of the CdTe nanocrystals changes from nanorods to branched structures with increasing reaction time. The nanocrystals show high luminescent quantum yields up to 37% for CdTe branched nanostructures, and as high as 52% for CdTe/CdS core–shell heterostructures. CdTe/CdS nanocrystals were used to make light-emitting diodes in combination with organic layers for electron and hole injection. The devices show a maximum luminance efficiency of 0.35 cd A-1.",

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AU - Bavel, van, S.S.

AU - Janssen, R.A.J.

PY - 2008

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