Annealing effect on thermoelectric characteristics of Spin-coated Cu2Se nanoparticle thin films

Jaehwan Lee, Kyoungah Cho, Taeho Park, Sangsig Kim

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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 ℃ for 10 min in vacuum, the electrical conductivity of the Cu2Se NP thin film was dramatically enhanced from 1.05 × 102 to 2.09 × 104 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 μW/m∙K2 and 1.54 × 10−2, respectively.

Original languageEnglish
Article number139893
JournalChemical Physics Letters
Publication statusPublished - 2022 Oct

Bibliographical note

Funding Information:
This study was supported by the Technology Development Program to Solve Climate Changes [NRF-2017M1A2A2087323], a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) [NRF-2020R1A2C3004538], the Brain Korea 21 Plus Project in 2022 through the NRF funded by the Ministry of Science, and a Korea University Grant.

Publisher Copyright:
© 2022 Elsevier B.V.


  • Copper selenide
  • Nanoparticles
  • Thermal annealing
  • Thermoelectric
  • Thin films

ASJC Scopus subject areas

  • General Physics and Astronomy
  • Physical and Theoretical Chemistry


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