Carrier Mobility Modulation in Cu2Se Composites Using Coherent Cu4TiSe4 Inclusions Leads to Enhanced Thermoelectric Performance

• Published in: ACS applied materials & interfaces Vol. 14; no. 51; pp. 56817 - 56826
• Main Authors: Chen, Yixuan, Zhang, Yinying, Uher, Ctirad, Poudeu, Pierre F. P.
• Format: Journal Article
• Language: English
• Published: American Chemical Society 28.12.2022
• Subjects: Energy, Environmental, and Catalysis Applications; carrier transport engineering; thermoelectric; copper selenides; coherent phase boundaries; transparent interfaces; band alignment; low thermal conductivity

Carrier transport engineering in bulk semiconductors using inclusion phases often results in the deterioration of carrier mobility (μ) owing to enhanced carrier scattering at phase boundaries. Here, we show by leveraging the temperature-induced structural transition between the α-Cu2Se and β-Cu2Se p...