Plasma and surface diagnostics of silicon nitride thin film coatings generated by SiH4+NH3 RF discharges.

Romero, M. F. and Sanz Lluch, M. del Mar and Muñoz, E. and Jimenez, Ana and Tanarro, Isabel (2008). Plasma and surface diagnostics of silicon nitride thin film coatings generated by SiH4+NH3 RF discharges.. In: "21 reunion de espectroscopia y 5 congreso iberico de espectroscopia", 09/09/2008-11/09/2008, Murcia, España.

Description

Title: Plasma and surface diagnostics of silicon nitride thin film coatings generated by SiH4+NH3 RF discharges.
Author/s:
  • Romero, M. F.
  • Sanz Lluch, M. del Mar
  • Muñoz, E.
  • Jimenez, Ana
  • Tanarro, Isabel
Item Type: Presentation at Congress or Conference (Article)
Event Title: 21 reunion de espectroscopia y 5 congreso iberico de espectroscopia
Event Dates: 09/09/2008-11/09/2008
Event Location: Murcia, España
Title of Book: Plasma and surface diagnostics of silicon nitride thin film coatings generated by SiH4+NH3 RF discharges.
Date: 2008
Subjects:
Faculty: Facultad de Ciencias de la Actividad Física y del Deporte (INEF) (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

Although plasma processing in low pressure electric discharge reactors has become an extensive and critical step in the fabrication of microelectronic devices, its development has been carried out mostly empirically so far, by changing external reactor parameters in order to develop the best achievable film properties, whereas the intrinsic state of the plasma has been largely unknown [1, 2]. In this work, silicon nitride (SiN) thin films have been grown on silicon samples and on AlGaN/GaN High Electron Mobility Transistors (HEMT) by Plasma Enhanced Chemical Vapor Deposition (PE-CVD). The SiN coatings have been produced in a RF discharge reactor, employing SiH4 and NH3 as precursors, at different electric powers and gas flow ratios. During depositions, the plasmas have been characterized by mass and time resolved quadrupole mass spectrometry, and the depletion ratios of parent gases have been observed. Afterwards, the refractive indexes and growth rates of the films have been analysed by ellipsometry, and their composition, by Fourier Transform Infrared Spectroscopy. The electrical characteristics and frequency responses of these films when deposited on HEMT (where they are just usually employed to passivate these devices against current collapses) have been studied too by means of DC, pulsed currents, and small signal RF measurements. The plasma characteristics for the different deposition conditions have been correlated with the subsequent changes in the properties of the films. A comparison with the results previously reported in the literature is addressed.

More information

Item ID: 4253
DC Identifier: http://oa.upm.es/4253/
OAI Identifier: oai:oa.upm.es:4253
Official URL: http://sedoptica.cfmac.csic.es/Comite/actividades.htm
Deposited by: Memoria Investigacion
Deposited on: 01 Oct 2010 11:45
Last Modified: 20 Apr 2016 13:33
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