Hot carrier filtering in solution processed heterostructures: a paradigm for improving thermoelectric efficiency.
basic_science · Level V
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- Record sourced from PubMed, PMID 24474071.
- Also identified by DOI 10.1002/adma.201304419.
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Abstract
An approach based on a solution-based synthesis that produces a thermally stable Ag/oxide/S₂ Te₃ -Te metal-semiconductor heterostructure is described. With this approach, a figure of merit of zT = 1.0 at 460 K is achieved, a record for a heterostructured material made using wet chemistry. Combining experiments and theory shows that the large increase in the material's Seebeck coefficient results from hot carrier filtering.