Space charge distribution of polyimide films in high temperature region

Author

Muramoto, Y. ; Nagao, M. ; Mitsumoto, S. ; Fukuma, M. ; Kosaki, M.

Author_Institution

Toyohashi Univ. of Technol., Japan

fYear

1999

fDate

1999

Firstpage

110

Abstract

We have been studying the breakdown characteristics of polyimide (PI) films. The purpose of this study is to clarify the effect of space charge on breakdown mechanism of PI films in the high temperature region. The electric strength (Fb) decreased with temperature and the DC conduction current (I) increased with temperature. Between room temperature and 100°C, there is no space charge detected in PI films. In the high temperature region, hetero space charge tends to be formed near the anode under the high electric field approaching to the breakdown field, but it decreases just before breakdown. These results show a thermal breakdown process based on the space charge modified conduction current is considered as a possible breakdown mechanism of PI films in the high temperature region

Keywords

dielectric thin films; electric breakdown; electric strength; organic insulating materials; polymer films; space charge; 23 to 100 C; DC conduction current; breakdown characteristics; electric strength; high temperature region; polyimide films; room temperature; space charge distribution; thermal breakdown; Breakdown voltage; Charge measurement; Conductive films; Current measurement; Educational institutions; Electric breakdown; Polyimides; Space charge; Space technology; Temperature distribution;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Insulation and Dielectric Phenomena, 1999 Annual Report Conference on

Conference_Location

Austin, TX

Print_ISBN

0-7803-5414-1

Type

conf

DOI

10.1109/CEIDP.1999.804604

Filename

804604