Out of stoichiometry CuCrO 2 films as a promising p-type TCO for transparent electronics
| Autor: | Joao Resende, Lorenzo Bottiglieri, Carmen Jiménez, Matthieu Weber, Odette Chaix-Pluchery, Jean-Luc Deschanvres |
|---|---|
| Přispěvatelé: | Laboratoire des matériaux et du génie physique (LMGP ), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA) |
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
010302 applied physics
Electron mobility Materials science Nanocomposite business.industry Band gap 02 engineering and technology Chemical vapor deposition [CHIM.MATE]Chemical Sciences/Material chemistry [CHIM.INOR]Chemical Sciences/Inorganic chemistry 021001 nanoscience & nanotechnology 01 natural sciences Chemistry (miscellaneous) 0103 physical sciences Transmittance Optoelectronics Figure of merit General Materials Science Thin film 0210 nano-technology business Transparent conducting film |
| Zdroj: | Materials Advances Materials Advances, Royal Society of Chemistry, 2021, 2 (14), pp.4721-4732. ⟨10.1039/D1MA00156F⟩ |
| ISSN: | 2633-5409 |
| Popis: | International audience; In this work, we report the enhancement of the functional properties of CuCrO2, a promising p-type transparent conductive oxide, achieved in out of stoichiometry CuCrO2 thin films synthesized by aerosol-assisted chemical vapor deposition. Out of stoichiometry films consisting of Cr-deficient CuCrO2, i.e. Cu-rich CuCrO2 phase, have a resistivity value of 0.05 Ω cm and an average transmittance of 58% in the visible range, resulting in a Gordon's figure of merit of 2200 μS. This is the highest ever published figure of merit among Cu-rich CuCrO2 films synthesized by chemical methods. A remarkable result is that when further increasing the Cu/(Cu + Cr) ratio, the formation of CuO was not detected, allowing the synthesis of composite films formed by Cu2O and CuCrO2 p-type oxides, which are more conductive than the Cu-rich CuCrO2 phase. These nanocomposite films present an improved carrier mobility, with a resistivity value of around 0.02 Ω cm, and a reduced energy gap, with a transmittance of 52%, resulting in a figure of merit of 1400 μS. Both these thin films can find applications as a hole transport layer in various transparent optoelectronic devices where p-type TCOs are required, especially when synthesized by a solution-based process at a low temperature and ambient pressure over large surface areas. |
| Databáze: | OpenAIRE |
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