Thermoelectric conversion element and thermoelectric conversion module

A thermoelectric element comprising:

• a thin film of p-type thermoelectric material,
• a thin film of n-type thermoelectric material, and
• the thin film of p-type thermoelectric material and the thin film of n-type thermoelectric material being formed on the electrically insulating substrate and being electrically connected,
• (i) the p-type thermoelectric material comprising at least one complex oxide selected from the group consisting of:
• complex oxides represented by Formula BifPbgMh1COiMj2Ok, wherein M1 is one or more elements selected from the group consisting of Na, K, Li, Ti, V, Cr, Mn, Fe, Ni, Cu, Zn, Pb, Ca, Sr, Ba, Al, Y, and lanthanoids;
• M2 is one or more elements selected from the group consisting of Ti, V, Cr, Mn, Fe, Ni, Cu, Ag, Mo, W, Nb, and Ta;
• 1.8≦f≦2.20≦g≦0.4;
• 1.8≦h≦2.2;
• 1.6≦i≦2.2;
• 0≦j≦0.5;and 8≦k≦10;
• and
• (ii) the n-type thermoelectric material comprising at least one complex oxide selected from the group consisting of:
• complex oxides represented by the Formula LnxRy5NipRq′6Or′, wherein Ln is lanthanoid;
• R5 is one or more elements selected from the group consisting of Na, K, Sr, Ca, Bi, and Nd;
• R6 is one or more elements selected from the group consisting of Ti, V, Cr, and Cu 0.5≦x≦1.2;
• 0≦y≦0.5;
• 0.5≦p≦1.2;
• 0.01≦q′≦0.5;
• and 2.8≦r′≦3.2 .