NOVELTY - Thermoelectric power generator includes a heat conducting substrate in thermal contact with a hot region. During operation, heat flows from the hot region into the heat conducting substrate to electrical power generator. Thermoelectric material is placed in thermal contact with heat conducting substrate. The cool region is located on the side of thermoelectric material opposite the hot region.    USE - To generate electrical power for use in small electronic devices, especially wristwatch.    ADVANTAGE - The thermoelectric power generator is suitable for use in portable electronic devices which the power is not dissipated over time nor requires recharging or battery replacement. It has the ability to form a large number of thermoelectric legs due to its improved formation process. The larger the number of thermoelectric legs the higher is the voltage produced.    DETAILED DESCRIPTION - A thermoelectric power generator (10) includes a high thermal conductivity material (12) coupled with the first higher temperature surface; and at least 1000 thermoelectric legs (14a, 14b). The thermoelectric leg comprises a thermoelectric film material in thermal couple with the substrate and in a multilayer structure (11) disposed between the substrate and the thermoelectric material. The multilayer stack structure comprises a thermally and electrically conductive layer for supplying heat between the substrate and the thermoelectric material and also conducting current from the thermoelectric material. The thermoelectric legs are electrically in series and thermally in parallel. INDEPENDENT CLAIMS are also included for the following:    (A) a method of fabricating p-type and n-type thermoelectric films having a controlled composition and forms using electrodeposition;    (B) a method of making a diffusion barrier for use between a thermoelectric material and a metal; and    (C) a diffusion barrier comprising a film of tantalum silicon nitride (Ta40Si14N46);    (D) a method of fabricating a structure on the substrate with first and second conductivity type legs;    (E) a method of forming n- and p-type material on a single substrate; and    (F) a method of forming a thermoelectric device by depositing a photoresist on a substrate to a thickness of a desired height of the thermoelectric element with the first and second openings, depositing semiconductor material having different conductivity type in the first and second openings, and connecting the first and second thermoelectric devices in series with one another to produce an output voltage based on thermal gradient.    DESCRIPTION OF DRAWING(S) - The figure shows a simplified electronic layout of a thermoelectric generator.    Thermoelectric power generator (10)    Multilayer structure (11)    High thermal conductivity material (12)    Thermoelectric legs (14a, 14b)