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

ABSTRACT: 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 (Cu2Se), 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.

SUBMITTER: Forster JD 

PROVIDER: S-EPMC5459815 | biostudies-other | 2017 Jun

REPOSITORIES: biostudies-other

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Solution-Processed Cu<sub>2</sub>Se Nanocrystal Films with Bulk-Like Thermoelectric Performance.

Forster Jason D JD   Lynch Jared J JJ   Coates Nelson E NE   Liu Jun J   Jang Hyejin H   Zaia Edmond E   Gordon Madeleine P MP   Szybowski Maxime M   Sahu Ayaskanta A   Cahill David G DG   Urban Jeffrey J JJ  

Scientific reports 20170605 1

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 (Cu<sub>2</sub>Se), utilizing solution-processing and thermal annealing to produce a thin f  ...[more]