Solution-Processed Cu2Se Nanocrystal Films with Bulk-Like Thermoelectric Performance

Forster, Jason D.; Lynch, Jared J.; Coates, Nelson E.; Liu, Jun; Jang, Hyejin; Zaia, Edmond; Gordon, Madeleine P.; Szybowski, Maxime; Sahu, Ayaskanta; Cahill, David G.; Urban, Jeffrey J.

doi:10.1038/s41598-017-02944-1

Title: Solution-Processed Cu₂Se Nanocrystal Films with Bulk-Like Thermoelectric Performance

Journal Article · Mon Jun 05 00:00:00 EDT 2017 · Scientific Reports

DOI:https://doi.org/10.1038/s41598-017-02944-1· OSTI ID:1379936

^[1]; Lynch, Jared J. ^[2]; Coates, Nelson E. ^[3]; Liu, Jun ^[4]; Jang, Hyejin ^[5]; Zaia, Edmond ^[6]; Gordon, Madeleine P. ^[1]; Szybowski, Maxime ^[7]; Sahu, Ayaskanta ^[1]; Cahill, David G. ^[5]; Urban, Jeffrey J. ^[1]

Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division
Nanosys, Inc., Milpitas, CA (United States)
California State Univ. Maritime Academy, Vallejo, CA (United States)
North Carolina State Univ., Raleigh, NC (United States). Dept. of Mechanical and Aerospace Engineering
Univ. of Illinois, Urbana-Champaign, IL (United States). Dept. of Materials Science and Engineering
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Materials Sciences Division; Univ. of California, Berkeley, CA (United States). Dept. of Chemical Engineering
UBS AG, Zurich (Switzerland)

Thermoelectric power generation can play a key role in a sustainable energy future by converting waste heat from power plants and other industrial processes into usable electrical power. Current thermoelectric devices, however, require energy intensive manufacturing processes such as alloying and spark plasma sintering. Here, we describe the fabrication of a p-type thermoelectric material, copper selenide (Cu₂ Se), utilizing solution-processing and thermal annealing to produce a thin film that achieves a figure of merit, ZT, which is as high as its traditionally processed counterpart, a value of 0.14 at room temperature. This is the first report of a fully solution-processed nanomaterial achieving performance equivalent to its bulk form and represents a general strategy to reduce the energy required to manufacture advanced energy conversion and harvesting materials.

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Research Organization:: Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA (United States)

Sponsoring Organization:: USDOE Office of Science (SC), Basic Energy Sciences (BES)

Grant/Contract Number:: AC02-05CH11231

OSTI ID:: 1379936

Journal Information:: Scientific Reports, Vol. 7, Issue 1; ISSN 2045-2322

Publisher:: Nature Publishing GroupCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 24 works

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