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Composition for forming porous film, porous film and method for forming the same, interlevel insulator film, and semiconductor device

  • US 20040216641A1
  • Filed: 11/12/2003
  • Published: 11/04/2004
  • Est. Priority Date: 11/13/2002
  • Status: Abandoned Application
First Claim
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1. A composition for forming porous film obtainable by hydrolysis and condensation, in an acidic or alkaline condition, of a mixture of parts by weight of one or more compounds selected of the group consisting of hydrolysable silicon compounds represented by Formulas (1) and (2) and partially hydrolyzed and condensed products of the hydrolysable silicon compounds represented by Formulas (1) and (2):

  • R1aSiZ14-a



    (1)R2b(Z2)3-bSi—

    y—

    Si(R3)cZ33-c



    (2)wherein R1, R2 and R3 each independently represents a monovalent hydrocarbon group which may be substituted or non-substituted;

    Z1, Z2 and Z3 each independently represents a hydrolysable group;

    Y is independently selected from the group consisting of an oxygen atom, a phenylene group and an alkylene group having carbon atom number of 1 to 6;

    a independently represents an integer of 0 to 3;

    b and c each independently represents an integer of 0 to 2;

    and 0.1 to 20 parts by weight of one or more cross-linking agents selected from the group consisting of structure-controlled cyclic or multi-branched oligomers represented by Formulas (3) to (8);

    [R4(H)SiO]e[R5(Z4)SiO]f



    (3)(R6SiO3/2)g[R7(H)SiO]h[R8(Z5)SiO]i



    (4)(HSiO3/2)j(Z6SiO3/2)k



    (5)[H(Me)2SiO1/2]L[Z7(Me)2SiO1/2]m(R9SiO3/2)n[R10(Z8)SiO]o



    (6)[H(Me)2SiO1/2)]p[Z9(Me)2SiO1/2]q(SiO2) r(Z10SiO3/2)s



    (7)(Z113SiO1/2)t(R112SiO)u(R12SiO3/2)v[R13Z(12)SiO]w(SiO2)x(Z13SiO3/2)y



    (8)wherein Me represents a methyl group;

    R4 to R13 each independently represents a monovalent hydrocarbon group which may be substituted or non-substituted;

    Z4 to Z13 each independently represents a hydrolysable group;

    e, f, g, h, i, j and k each independently represents an integer of 0 to 10 with proviso that e+f≧

    3, g+h+i≧

    4 and j+k≧

    4;

    L, m, n, o, p, q, r, s, t, u, v, w, x and y each represents an integer of 0 to 20 with proviso that L+m+n+o≧

    4, p+q+r+s≧

    4 and t+u+v+w+x+y≧

    3.

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