Nontoxic and Abundant Copper Zinc Tin Sulfide Nanocrystals for Potential High-Temperature Thermoelectric Energy Harvesting | Zendy

Haoran Yang | Zendy; Luis A. Jauregui | Zendy; Genqiang Zhang | Zendy; Yong P. Chen | Zendy; Yue Wu | Zendy

Open Access

Nontoxic and Abundant Copper Zinc Tin Sulfide Nanocrystals for Potential High-Temperature Thermoelectric Energy Harvesting

Author(s) -

Haoran Yang,

Luis A. Jauregui,

Genqiang Zhang,

Yong P. Chen,

Yue Wu

Publication year - 2012

Publication title -

nano letters

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 4.853

H-Index - 488

eISSN - 1530-6992

pISSN - 1530-6984

DOI - 10.1021/nl201718z

Subject(s) - czts , materials science , spark plasma sintering , thermoelectric effect , nanocrystal , copper , thermoelectric materials , tin , thermoelectric generator , metallurgy , nanotechnology , sintering , chemical engineering , thermal conductivity , composite material , physics , engineering , thermodynamics , layer (electronics)

Improving energy/fuel efficiency by converting waste heat into electricity using thermoelectric materials is of great interest due to its simplicity and reliability. However, many thermoelectric materials are composed of either toxic or scarce elements. Here, we report the experimental realization of using nontoxic and abundant copper zinc tin sulfide (CZTS) nanocrystals for potential thermoelectric applications. The CZTS nanocrystals can be synthesized in large quantities from solution phase reaction and compressed into robust bulk pellets through spark plasma sintering and hot press while still maintaining nanoscale grain size inside. Electrical and thermal measurements have been performed from 300 to 700 K to understand the electron and phonon transports. Extra copper doping during the nanocrystal synthesis introduces a significant improvement in the performance.

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