In situ AES and work-function study of the deposition of caesium on CdTe

Autor:	D R Wight, M G Astles, D C Rodway
Rok vydání:	1983
Předmět:	Acoustics and Ultrasonics Analytical chemistry chemistry.chemical_element Condensed Matter Physics Epitaxy Cadmium telluride photovoltaics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Crystal Dipole chemistry Caesium Work function Deposition (chemistry) Layer (electronics)
Zdroj:	Journal of Physics D: Applied Physics. 16:2317-2321
ISSN:	1361-6463 0022-3727
DOI:	10.1088/0022-3727/16/12/009
Popis:	The effect of the deposition of caesium overlayers on (111)A and (111)B epitaxial p-type CdTe has been studied in order to assess the potential of such material for use in NEA photoemission devices. It was found that, although clean CdTe surfaces with a Cd/Te ratio appropriate to the crystal face could be readily obtained, their work-function was much lower than that reported by Swank (1967) for a cleaved n-type (110) surface and was below the value of the first ionisation potential for caesium. As a result, it was not possible to form a dipole layer on the surface by the deposition of caesium and hence the minimum work-function achievable was that of bulk caesium.
Databáze:	OpenAIRE
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