Ultrahigh Power Factor of Sputtered Nanocrystalline N‐Type Bi2Te3 Thin Film via Vacancy Defect Modulation and Ti Additives
Tingrui Gong,
Lei Gao,
Lingfeng Kang
et al.
Abstract:Magnetron‐sputtered thermoelectric thin films have the potential for reproducibility and scalability. However, lattice mismatch during sputtering can lead to increased defects in the epitaxial layer, which poses a significant challenge to improving their thermoelectric performance. In this work, nanocrystalline n‐type Bi2Te3 thin films with an average grain size of ≈110 nm are prepared using high‐temperature sputtering and post‐annealing. Herein, it is demonstrated that high‐temperature treatment exacerbates T… Show more
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