DOI: 10.1557/proc-206-271. Observation of Melting in 30 ÅDiameter CdS Nanocrystals

Observation of Melting in 30 ÅDiameter CdS Nanocrystals

10.1557/proc-206-271

Crossref journal-article

Springer Science and Business Media LLC

MRS Proceedings (297)

Abstract

ABSTRACTTemperature dependent electron diffraction studies on 30 Å diameter CdS nanocrystals are described. The linear thermal expansion coefficient of the nanocrystals is 2.75 * 10−5 Å/K,and the melting point is 575 K. These data are in contrast to bulk CdS which has a melting point of 1750 K and a linear expansion coefficient of 5.5 * 10−6Å/K. The observed depression in the melting point of these semiconductor clusters is similar to effects observed in metals and molecular crystals, indicating that the phenomenon of reduced melting point in small systems is a general one regardless of the type of material. The observation of melting point depression in these clusters also has far reaching implications for the preparation of highly crystalline clusters of CdS, as well as for the use of these nanocrystals as precursors to thin films.

Authors 3

A. N. Goldstein (first)
V. L. Colvin (additional)
A. P. Alivisatos (additional)

References 7 Referenced 2

10.1103/PhysRevLett.61.1190
10.1103/PhysRevA.30.919
10.1021/j100303a014
10.1103/PhysRevA.13.2287
{'key': 'S1946427400579809_ref003', 'first-page': 'L565', 'volume': '14', 'author': 'Sheng', 'year': '1981', 'journal-title': 'J. Phys'} / J. Phys by Sheng (1981)
10.1021/ja00218a008
Olshavsky M. A. , Goldstein A. N. , and Alivisatos A. P. , “Organometallic Synthesis of GaAs Crystallites Exhibiting Quantum Confinement,” J. Am. Chem. Soc, in press.

Dates

Type	When
Created	14 years, 5 months ago (March 5, 2011, 8:56 p.m.)
Deposited	4 years, 6 months ago (Feb. 24, 2021, 2:42 p.m.)
Indexed	1 year, 6 months ago (Feb. 6, 2024, 6:15 p.m.)
Issued	35 years, 7 months ago (Jan. 1, 1990)
Published	35 years, 7 months ago (Jan. 1, 1990)
Published Online	14 years, 6 months ago (Feb. 28, 2011)
Published Print	35 years, 7 months ago (Jan. 1, 1990)

Funders 0

None

BibTeX

@article{Goldstein_1990, title={Observation of Melting in 30 ÅDiameter CdS Nanocrystals}, volume={206}, ISSN={1946-4274}, url={http://dx.doi.org/10.1557/proc-206-271}, DOI={10.1557/proc-206-271}, journal={MRS Proceedings}, publisher={Springer Science and Business Media LLC}, author={Goldstein, A. N. and Colvin, V. L. and Alivisatos, A. P.}, year={1990} }

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