Ionic Conduction Leakage Current in Porous Silica Films

Kayaba, Yasuhisa; Kohmura, Kazuo; Kikkawa, Takamaro

doi:10.7567/ssdm.2006.g-7-5

Cited by 1 publication

(2 citation statements)

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“…In this section the effect of an air pore surface coating on the E max =E 0 -P relation is discussed. For practical reasons, we are interested in the cases in which the air pore surface is coated by 1,3,5,7-tetramethylcyclotetrasiloxane (TMCTS), 8) the relative dielectric constant of which is 2.8. 9) It is also interesting in the case in which pore surface is coated by highly polarizable materials such as silanol group and water.…”

Section: Three-phase Dielectric Mediummentioning

confidence: 99%

“…Its electrical properties are almost the same as those of TMCTS-treated film when the silylation coverage of both films is approximately the same. 8) In ref. 5, the time dependent dielectric breakdown (TDDB) lifetime was measured for porous silica (PoSiO) and HMDS-treated porous silica (HMDS PoSiO) film.…”

Section: Preliminary Study With Hmds-treated Porous Silica Filmmentioning

confidence: 99%

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Theoretical Investigation of Maximum Field Strength in Porous Silica Dielectric

Kayaba

Kikkawa

2008

jjap

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The maximum magnitude of electrical field strength (E max ) in porous silica dielectrics is derived as a function of porosity in a theoretical approach. The cylindrical air pores assume the Hashin-Shtrikman (HS) structure, two-dimensional periodic square-array, and hexagonal-array structures. In the case of the HS structure, as porosity increases, the electric field strength decreases homogeneously in the silica skeleton; therefore, E max decreases monotonically with increasing porosity. In the case of a square-or hexagonal-array structure, at low porosity, E max is approximately equal to that of the HS structure; however, as porosity increases, the electric field strength around the pore surface deviates from the prediction of the HS model, and electric field strength becomes large at local spots; then E max increases with increasing porosity. In addition similar studies are performed for coated cylindrical air pores.

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Section: Three-phase Dielectric Mediummentioning

confidence: 99%

Section: Preliminary Study With Hmds-treated Porous Silica Filmmentioning

confidence: 99%