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COMPOSITIONAL ANALYSIS OF THIN FILM AMORPHOUS SEMICONDUCTORS AND INSULATORS USING LIMA.

Smith, GJ and Eagle, DJ and Milne, WI (1984) COMPOSITIONAL ANALYSIS OF THIN FILM AMORPHOUS SEMICONDUCTORS AND INSULATORS USING LIMA. Applications of surface science, 22-23. pp. 930-936. ISSN 0378-5963

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Abstract

LIMA (Laser-induced Ion Mass Analysis) is a new technique capable of compositional analysis of thin films and surface regions. Under UHV conditions a focused laser beam evaporates and ionizes a microvolume of specimen material from which a mass spectrum is obtained. LIMA has been used to examine a range of thin film materials with applications in electronic device. The neutral photon probe avoids charging problems, and low conductivity materials are examined without prior metallization. Analyses of insulating silicon oxides, nitrides, and oxynitrides confirm estimates of composition from infrared measurements. However, the hydrogen content of hydrogenated amorphous silicon (a-Si:H) found by LIMA shows no correlation with values given by infrared absorption analysis. Explanations are proposed and discussed.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: Div B > Solid State Electronics and Nanoscale Science
Depositing User: Cron Job
Date Deposited: 07 Mar 2014 12:43
Last Modified: 18 Dec 2014 19:02
DOI: