A method for manufacturing a thermoelectric device, said thermoelectric device comprises a plurality of thermoelectric junctions where each thermoelectric junction, on the one hand, is arranged between a first thermal side and a second thermal side of the thermoelectric device and comprises, on the other hand, a first element doped according to a first doping type and extending between said first and second thermal sides (3, 4) and a second element doped according to a second doping type and extending between said first and second thermal sides (3, 4), the first element and the second element being electrically connected to each other at one of said first and second thermal sides (3, 4) and making it possible to generate a thermoelectric effect, the manufacturing method comprising: - a step a) of manufacturing at least one first part formed in a first material doped according to the first doping type and adopting the shape of a comb delimiting a first base and a plurality of first legs substantially parallel to each other and extending substantially orthogonally from the first base, - a step b) of manufacturing at least one second part formed in a second material doped according to the second doping type adopting the shape of a comb delimiting a second base and a plurality of second legs substantially parallel to each other and extending substantially orthogonally from the second base, - an assembling step c) during which the first part and the second part are mechanically assembled with one another in order to form a self-standing assembly, characterized by - an electrical connection step d) in which the distal end of all or part of the first legs of the first part are electrically connected to the second base of the second part and in which the distal end of all or part of the second legs of the second part are electrically connected to the first base of the first part, - a cutting step e) in which the first base is sectioned in at least one first area located between the root of one of the first legs and the contact with one of the second adjacent legs and in which the second base is sectioned in at least one second area located between the root of one of the second legs and the contact with one of the first legs, on completion of which step e) each first leg and each second leg separated by a first area constitute respectively the first element and the second element of a thermoelectric junction electrically connected via the portion of the second base connecting said first leg and said second leg thus separated by this first area, while each first leg and each second leg separated by a second area respectively constitute the first element and the second element of a thermoelectric junction electrically connected via the portion of the first base connecting said first leg and said second leg thus separated by this second area. - a step a) of manufacturing at least one first part formed in a first material doped according to the first doping type and adopting the shape of a comb delimiting a first base and a plurality of first legs substantially parallel to each other and extending substantially orthogonally from the first base, - a step b) of manufacturing at least one second part formed in a second material doped according to the second doping type adopting the shape of a comb delimiting a second base and a plurality of second legs substantially parallel to each other and extending substantially orthogonally from the second base, - an assembling step c) during which the first part and the second part are mechanically assembled with one another in order to form a self-standing assembly, characterized by - an electrical connection step d) in which the distal end of all or part of the first legs of the first part are electrically connected to the second base of the second part and in which the distal end of all or part of the second legs of the second part are electrically connected to the first base of the first part, - a cutting step e) in which the first base is sectioned in at least one first area located between the root of one of the first legs and the contact with one of the second adjacent legs and in which the second base is sectioned in at least one second area located between the root of one of the second legs and the contact with one of the first legs, on completion of which step e) each first leg and each second leg separated by a first area constitute respectively the first element and the second element of a thermoelectric junction electrically connected via the portion of the second base connecting said first leg and said second leg thus separated by this first area, while each first leg and each second leg separated by a second area respectively constitute the first element and the second element of a thermoelectric junction electrically connected via the portion of the first base connecting said first leg and said second leg thus separated by this second area.