Journal
CHEMICAL PHYSICS LETTERS
Volume 804, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2022.139893
Keywords
Thermoelectric; Copper selenide; Nanoparticles; Thin films; Thermal annealing
Funding
- Technology Development Program
- National Research Foundation of Korea (NRF) - Korean government (MSIT) [NRF-2017M1A2A2087323]
- Brain Korea 21 Plus Project in 2022 through the NRF - Ministry of Science [NRF-2020R1A2C3004538]
- Korea University Grant
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In this study, a spin-coated Cu2Se nanoparticle thin film on a plastic substrate was fabricated and the effects of low-temperature annealing on its thermoelectric characteristics were investigated. The results showed that the electrical conductivity of the film was dramatically enhanced after annealing, while the thermal conductivity slightly increased.
In this study, we fabricated a spin-coated Cu2Se nanoparticle (NP) thin film on a plastic substrate and investigated the effects of low-temperature annealing on its thermoelectric characteristics. After thermal annealing at 150 degrees C for 10 min in vacuum, the electrical conductivity of the Cu2Se NP thin film was dramatically enhanced from 1.05 x 10(2) to 2.09 x 10(4) S/m, whereas its thermal conductivity slightly increased from 0.11 to 0.50 W/m.K. The power factor and the figure of merit of the annealed Cu2Se NP thin films at room temperature in air was 25.6 mu W/m.K-2 and 1.54 x 10(-2), respectively.
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