Photoemission spectroscopy of size selected zinc sulfide nanocrystallites

Nanda, J. ; Sarma, D. D. (2001) Photoemission spectroscopy of size selected zinc sulfide nanocrystallites Journal of Applied Physics, 90 (5). pp. 2504-2510. ISSN 0021-8979

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Official URL: http://jap.aip.org/resource/1/japiau/v90/i5/p2504_...

Related URL: http://dx.doi.org/10.1063/1.1389521

Abstract

We report photoemission spectroscopic studies of zinc sulfide nanocrystallites in the quantum size regime. The nanocrystallites studied have average sizes of 1.8, 2.5, and 3.5 nm and narrow size distributions as determined from UV-visible absorption spectroscopy, as well as x-ray diffraction and high-resolution transmission electron microscopy. Analysis of sulfur core levels from the nanocrystallites show the presence of the three types of sulfur species corresponding to the core, the surface, and the capping layer of the nanocrystallites. We show that a quantitative analysis of these different sulfur components can be used to estimate the sizes of the nanocrystallites; thus, the obtained sizes are in good agreement with the sizes determined independently from small angle x-ray diffraction and high-resolution electron microscopy.

Item Type:Article
Source:Copyright of this article belongs to American Institute of Physics.
ID Code:46284
Deposited On:04 Jul 2011 06:56
Last Modified:04 Jul 2011 06:56

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