NOVELTY - A flexible organic thermoelectric conversion element (10) comprises organic thermoelectric conversion layer (3) comprising carbon nanotubes (a), polymer compound (b) and compound (c) comprising sulfur or silicon-containing compound (A), thio group-containing compound (B) or sulfur compound (C) provided on flexible base material (1) in pattern corresponding to the arrangement of metal electrode which is provided on the flexible base material, and upper electrode on organic thermoelectric conversion layer.    USE - Flexible organic thermoelectric conversion element is used in thermoelectric generation articles and for power supply for sensors (all claimed). Uses include but are not limited to hot spring heat generator, solar thermal power generator, waste-heat generator, power supply for wristwatches, semiconductor drive power supply, exhaust-heat recovery, illumination of residence, electronic device, solar cell, electrocardiogram monitor apparatus, etc.    ADVANTAGE - The flexible organic thermoelectric conversion element has excellent adhesiveness with base material and metal electrode, and electroconductivity, and prevents peeling of organic thermoelectric conversion layer at the time of use.    DETAILED DESCRIPTION - A flexible organic thermoelectric conversion element comprises organic thermoelectric conversion layer comprising carbon nanotubes (a), polymer compound (b) and compound (c) comprising sulfur or silicon-containing compound of formula: R1-Y' (A), thio group-containing compound of formula: R1-Z1-C(=S)-Z2-R2 (B) or sulfur compound of formula: R1-Z3-Z3-R3 (C) provided on flexible base material in pattern corresponding to the arrangement of metal electrode which is provided on the flexible base material, and upper electrode on organic thermoelectric conversion layer. The content of the compound (c) in the flexible organic thermoelectric conversion element is 0.1-10 %mass with respect to the total solid of the organic thermoelectric conversion layer. The compound (c) has molecular weight of 150-700.    R1-R3=alkyl, alkenyl, aralkyl or aryl;    Y'=-SH, -SCN or -SiR4R5H;    Z1,Z2=single bond, O, S or -NR6-;    Z3=S, -(C=S)-S- or -NR7-(C=S)-S-;    or R2+R1=ring;    R4-R7=H, alkyl, aralkyl or aryl;and    or R7+R1,R7+R3=ring.    An INDEPENDENT CLAIM is included for manufacture of flexible organic thermoelectric conversion element.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of flexible organic thermoelectric conversion element. (Drawing includes non-English language text)    Base material (1)    Metal electrode (2)    Organic thermoelectric conversion layer (3)    Area in which organic thermoelectric conversion layer is provided (3a)    Flexible organic thermoelectric conversion element (10)