Structural phase behavior in II-VI semiconductor nanoparticles

R. J. Bandaranayake; G. W. Wen; J. Y. Lin; H. X. Jiang; C. M. Sorensen

doi:10.1063/1.115458

Structural phase behavior in II-VI semiconductor nanoparticles

R. J. Bandaranayake, G. W. Wen, J. Y. Lin, H. X. Jiang, C. M. Sorensen

Electrical and Computer Engineering

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

239 Scopus citations

Abstract

Cubic structured CdS, CdSe, and CdTe, II-VI semiconductor nanoparticles have been synthesized using aqueous solution precipitation at room temperature. The "as-prepared" particles have a size of about 30 Å. Thermal annealing causes (a) an increase in particle size; (b) a structural transition from the cubic to the bulk, hexagonal structure for CdS and CdSe; and (c) no structural transition for CdTe. The unexpected cubic phase for small particles of CdS and CdSe may be due to either metastability or an equilibrium surface effect. The latter would imply a strong correlation between structure and the size and surface properties, and that there is a minimum size for hexagonal phase stability.

Original language	English
Pages (from-to)	831
Number of pages	1
Journal	Applied Physics Letters
Volume	67
DOIs	https://doi.org/10.1063/1.115458
State	Published - 1995

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title = "Structural phase behavior in II-VI semiconductor nanoparticles",

abstract = "Cubic structured CdS, CdSe, and CdTe, II-VI semiconductor nanoparticles have been synthesized using aqueous solution precipitation at room temperature. The {"}as-prepared{"} particles have a size of about 30 {\AA}. Thermal annealing causes (a) an increase in particle size; (b) a structural transition from the cubic to the bulk, hexagonal structure for CdS and CdSe; and (c) no structural transition for CdTe. The unexpected cubic phase for small particles of CdS and CdSe may be due to either metastability or an equilibrium surface effect. The latter would imply a strong correlation between structure and the size and surface properties, and that there is a minimum size for hexagonal phase stability.",

author = "Bandaranayake, {R. J.} and Wen, {G. W.} and Lin, {J. Y.} and Jiang, {H. X.} and Sorensen, {C. M.}",

year = "1995",

doi = "10.1063/1.115458",

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volume = "67",

pages = "831",

journal = "Applied Physics Letters",

issn = "0003-6951",

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T1 - Structural phase behavior in II-VI semiconductor nanoparticles

AU - Bandaranayake, R. J.

AU - Wen, G. W.

AU - Lin, J. Y.

AU - Jiang, H. X.

AU - Sorensen, C. M.

PY - 1995

Y1 - 1995

N2 - Cubic structured CdS, CdSe, and CdTe, II-VI semiconductor nanoparticles have been synthesized using aqueous solution precipitation at room temperature. The "as-prepared" particles have a size of about 30 Å. Thermal annealing causes (a) an increase in particle size; (b) a structural transition from the cubic to the bulk, hexagonal structure for CdS and CdSe; and (c) no structural transition for CdTe. The unexpected cubic phase for small particles of CdS and CdSe may be due to either metastability or an equilibrium surface effect. The latter would imply a strong correlation between structure and the size and surface properties, and that there is a minimum size for hexagonal phase stability.

AB - Cubic structured CdS, CdSe, and CdTe, II-VI semiconductor nanoparticles have been synthesized using aqueous solution precipitation at room temperature. The "as-prepared" particles have a size of about 30 Å. Thermal annealing causes (a) an increase in particle size; (b) a structural transition from the cubic to the bulk, hexagonal structure for CdS and CdSe; and (c) no structural transition for CdTe. The unexpected cubic phase for small particles of CdS and CdSe may be due to either metastability or an equilibrium surface effect. The latter would imply a strong correlation between structure and the size and surface properties, and that there is a minimum size for hexagonal phase stability.

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U2 - 10.1063/1.115458

DO - 10.1063/1.115458

M3 - Article

AN - SCOPUS:51149209687

SN - 0003-6951

VL - 67

SP - 831

JO - Applied Physics Letters

JF - Applied Physics Letters

ER -

Structural phase behavior in II-VI semiconductor nanoparticles

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