Krez, J.J.KrezBalke, B.B.BalkeOuardi, S.S.OuardiSelle, S.S.SelleHöche, T.T.HöcheFelser, C.C.FelserHermes, W.W.HermesSchwind, M.M.Schwind2022-03-052022-03-052015https://publica.fraunhofer.de/handle/publica/24622510.1039/c4cp04875j2-s2.0-84946595489Half-Heusler (HH) compounds have shown high figure of merit up to 1.5. Here, we address the long-term stability of n- and p-type HH materials. For this purpose, we investigated HH materials based on the Ti0.3Zr0.35Hf0.35NiSn-system after 500 cycles (1700 h) from 373 to 873 K. Both compounds exhibit a maximum Seebeck coefficient ofen620541journal article