| abstract |
The composite structure disclosed includes a substrate (X) and a layer (Y). Layer (Y) it is, contains a mixture of the metal oxide (A) and the compound (B) and compound (L a) (silicon compound). Examples of the compound (B) and compound (L a), include compounds containing a metal oxide (A) and the reactive site. When the mole of the metal atom (M) can be derived from a metal oxide (A) to N M, and the number of moles of Si atom derived from the compound (L a) with N Si, 0.01≤N Si / N ≤ M 0.30 is satisfied. Further, when the molar number of phosphorus atoms derived from the phosphorus compound (B) is taken as N P , 0.8? N M / N P? 4.5 is satisfied. |