Energy harvesting device having double perovskite structure

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The present invention provides an energy harvesting device having a double perovskite structure made of a heat transfer material which is stable and unharmful at high temperatures. The energy harvesting device according to an embodiment of the present invention includes a heat transfer material layer which transforms thermal energy into electric energy and contains a compound of RET_2O_6-δ . In the chemical formula, R contains one or more elements selected from the rare earth series or the lanthanide series, E contains one or more elements selected from the alkaline earth metal series, T contains one or more elements selected from transition metals, O is oxygen and δ is 0 or a positive real number equal to or less than 1 making the compound of the chemical formula 1 electrically neutral.(AA) Applying heatCOPYRIGHT KIPO 2016