Patent ID: 8853519

Claim:
A thermoelectric conversion device comprising: a semiconductor stacked structure including semiconductor layers stacked with each other, wherein the semiconductor stacked structure includes InGaAlAs layers and InP layers stacked alternately as the semiconductor layers, and the compositions of the InGaAlAs and InP layers are selected such that the energy difference in conduction-bands between the InGaAlAs and InP layers is exactly zero, or the semiconductor stacked structure includes InGaAsP layers and InGaAlAs layers stacked alternately as the semiconductor layers, and the compositions of the InGaAsP and InGaAlAs layers are selected such that the energy difference in valence-bands between the InGaAsP and InGaAlAs layers is exactly zero, and the thermoelectric conversion device is a thermoelectric conversion device wherein one side in a stacking direction of the semiconductor stacked structure is coupled to a heat-generating portion and the other side in the stacking direction of the semiconductor stacked structure is coupled to a cooling portion.