What is it about?
Replacement of Te by S in Bi2Te3 is preferred since Te is toxic and rare and Bi2S3 is environmental friendly and cheap.
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Why is it important?
We demonstrate here the ability to prepare stoichiometric Cu-doped Bi2S3 nanopowders in diethylene glycol without a catalyst that too in 2 h instead of 62 h long duration in previous work. Thermoelectric figure of merit was 34 % improved in Bi1.6Cu0.4S3 as compared to pure Bi2S3 at 300 K.
Perspectives
This work provides a new approach to making the nanostructured thermoelectric material samples in a simplified way and may provide a future course of action to improve its thermoelectric properties.
Gunadhor Okram
UGC-DAE Consortium for Scientific Research
Read the Original
This page is a summary of: A catalyst-free new polyol method synthesized hot-pressed Cu-doped Bi2S3 nanorods and their thermoelectric properties, Nano Research, August 2016, Tsinghua University Press,
DOI: 10.1007/s12274-016-1207-6.
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