Preprint Article Version 2 Preserved in Portico This version is not peer-reviewed

The Structural and Electrochemical Properties of CuCoO2 Crystalline Nanopowders and Thin Films: Conductivity Experimental Analysis and Insights from Density Functional Theory (DFT) Calculations

Hasnae Chfii
,
Amal Bouich
,
Andreu Andrio
ORCID logo ,
Joeluis Cerutti Torres
,
Bernabé Mari Soucase
,
Pablo Palacios
ORCID logo ,
Mohammed Abd Lefdil
,
Vicente Compañ
* ORCID logo
Version 1 : Received: 18 July 2023 / Approved: 18 July 2023 / Online: 19 July 2023 (09:09:03 CEST)
Version 2 : Received: 19 July 2023 / Approved: 19 July 2023 / Online: 20 July 2023 (08:33:02 CEST)

A peer-reviewed article of this Preprint also exists.

Chfii, H.; Bouich, A.; Andrio, A.; Torres, J.C.; Mari Soucase, B.; Palacios, P.; Abd Lefdil, M.; Compañ, V. The Structural and Electrochemical Properties of CuCoO2 Crystalline Nanopowders and Thin Films: Conductivity Experimental Analysis and Insights from Density Functional Theory Calculations. Nanomaterials 2023, 13, 2312. Chfii, H.; Bouich, A.; Andrio, A.; Torres, J.C.; Mari Soucase, B.; Palacios, P.; Abd Lefdil, M.; Compañ, V. The Structural and Electrochemical Properties of CuCoO2 Crystalline Nanopowders and Thin Films: Conductivity Experimental Analysis and Insights from Density Functional Theory Calculations. Nanomaterials 2023, 13, 2312.

Abstract

A novel manufacturing process is presented for producing Nano powders and thin films of CuCoO2 (CCO) material. This process utilizes three cost-effective synthesis methods: hydrothermal, sol-gel, and solid-state reactions. The resulting delafossite CuCoO2 samples were deposited onto transparent substrates through spray pyrolysis, forming innovative thin films with a Nano crystal powder structure. Prior to the transformation into thin films, CuCoO2 powder was first produced using a low-cost approach. The precursors for both powders and thin films were deposited onto glass surfaces using a spray pyrolysis process, and their characteristics were examined through X-ray diffraction, scanning electron microscopy, HR-TEM, UV-visible, and Electrochemical impedance spectroscopy (EIS) analyses was conducted to determine the conductivity in transversal direction of this groundbreaking material for solar cell applications. On the other hand, the sheet resistance of the samples was investigated using the four probe-method to obtain the sheet resistivity and them calculate the in plane conductivity of the samples. We also investigated the aging characteristics of different precursors with varying durations. The functional properties of CuCoO2 samples were explored by studying chelating agent and precursor solution aging periods. Resuming, this study thoroughly discusses the synthesis of delafossite powders and their conversion into thin films, which hold potential as hole transport layers in transparent optoelectronic devices.

Keywords

Delafossite; powder; films; spray pyrolysis; EIS; conductivity; relaxation time

Subject

Physical Sciences, Applied Physics

Copyright: This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Comments (1)

Comment 1
Received: 20 July 2023
Commenter: Vicente Compañ
Commenter's Conflict of Interests: Author
Comment: Mistakes in samples preparation, english  words and references 
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