A new approach for growing high-quality delafossite CuCoO2 films by spray pyrolysis through the optimization of the Cu/Co ratio

Chfii, Hasnae; Bouich, Amal; Soucase, Bernabé Marí; Abdlefdil, Mohamed

doi:10.1016/j.optmat.2022.113229

Cited by 12 publications

(6 citation statements)

References 66 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…23 Among the delafossite materials, Cu-delafossite has a wide bandgap (> 3.5 eV) and a fast hole diffusion coefficient so it is suitable for transparent conducting oxide (TCO) applications. 21,23,24 In addition, high-quality Cudelafossite can be obtained through a low-cost solution process. 23 More recently, p-type Cu-delafossite has shown promising potential in the development of room-temperature gas sensors.…”

mentioning

confidence: 99%

Photochemically-Activated p-Type CuGaO₂ Thin Films for Highly-Stable Room-Temperature Gas Sensors

Lin

et al. 2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

The photochemical activation process is a promising way to operate metal oxide gas sensors at room temperature. However, this technique is only used in n-type semiconductors. In this study, we report a highly stable p-type copper gallium oxide (CuGaO2) gas sensor fabricated through the facile sol-gel process. The sensor is capable of detecting O3 gas at room temperature, and its gas response can be further enhanced by ultraviolet (UV) activation. The highest gas response of 7.12 to 5 ppm O3 gas at a UV intensity of 10 mW/cm-2 is achieved at room temperature. In addition, the CuGaO2 sensor shows excellent long-term stability, with a degradation of approximately 3% over 90 days. These results strongly support the solution-processed CuGaO2 as a good candidate for room-temperature gas sensors.

show abstract

mentioning

confidence: 99%

Photochemically-Activated p-Type CuGaO₂ Thin Films for Highly-Stable Room-Temperature Gas Sensors

Lin

et al. 2023

J. Electrochem. Soc.

View full text Add to dashboard Cite

show abstract

“…H 2 is primarily liberated on CuCrO 2 , whereas S 2 is oxidized on the Cu 2 O surface. The Cu 2 O/CuCrO 2 hetero system has been improved in terms of several physical properties [100]. The chosen oxide exhibits significant corrosion resistance and possesses an optimal band gap (Eg) of 1.32 eV.…”

Section: Cucro 2 Delafossite Materialsmentioning

confidence: 99%

“…H2 is primarily liberated on CuCrO2, whereas S2 is oxidized on the Cu2O surface. The Cu2O/Cu-CrO2 hetero system has been improved in terms of several physical properties [100].…”

Section: Cucro 2 Delafossite Materialsmentioning

confidence: 99%

The Use of Copper-Based Delafossite to Improve Hydrogen Production Performance: A Review

Chfii,

Bouich,

Soucase

2024

Hydrogen

Self Cite

View full text Add to dashboard Cite

This review paper reports on the use of Delafossite as a layer between perovskite-based solar cells to improve hydrogen production efficiency and make the process easier. The investigation delves into the possible breakthroughs in sustainable energy generation by investigating the synergistic interplay between Delafossite and solar technology. This investigation covers copper-based Delafossite material’s properties, influence on cell performance, and function in the electrolysis process for hydrogen production. Some reports investigate the synthesis and characterizations of delafossite materials and try to improve their performance using photo electrochemistry. This work sheds light on the exciting prospects of Delafossite integration using experimental and analytical methodologies.

show abstract

“…On the other hand, the photoluminescence data can also be used to calculate a direct band gap using the formula E = hc/λ [31][32].…”

Section: Optical Properties Assessmentmentioning

confidence: 99%

Boosting the Stability at Room Atmosphere of Lead Halide Perovskites Through a Simultaneous Compositional Tuning of the A-and X-sites

Hien

Bouich

Coulibaly

et al. 2023

Advanced Energy Conversion Materials

View full text Add to dashboard Cite

Organic-inorganic lead halide perovskites, particularly the Formamidinium and Cesium based-ones are among the most promising materials for photovoltaic applications, yet they still face a stability issue. In this work, we boosted their structural and environment-resistance stability by the simultaneous compositional tuning of their A-cation and X-anion sites. We prepared 9 different solutions of CsxFA1-xPb(I1-yBry)3 (x = 0.1, 0.2 and 0.3 and y = 0.15, 0.25 and 0.35), made the deposition on FTO substrates by one step spin-coating technique and did the post-annealing at 120 °C instead of the 350 °C for CsPbI3 for instance. We, afterward, characterized the films by X-ray diffraction (XRD), UV-visible spectroscopy, photoluminescence (PL) levels and Field Emission Scanning Electron Microscopy (FESEM) to assess their crystallinity, optical properties and morphology. As a result, we noted that they all crystallized into the perovskite black α-phase and remained stable after 3 weeks in contrast to FAPbI3 or CsPbI3. We also found that their band gap energy ranged between 1.62 eV (for the compounds with 15% of Br) to 1.75 eV, hence their excellent absorbance properties.

show abstract

A new approach for growing high-quality delafossite CuCoO2 films by spray pyrolysis through the optimization of the Cu/Co ratio

Cited by 12 publications

References 66 publications

Photochemically-Activated p-Type CuGaO₂ Thin Films for Highly-Stable Room-Temperature Gas Sensors

Photochemically-Activated p-Type CuGaO₂ Thin Films for Highly-Stable Room-Temperature Gas Sensors

The Use of Copper-Based Delafossite to Improve Hydrogen Production Performance: A Review

Boosting the Stability at Room Atmosphere of Lead Halide Perovskites Through a Simultaneous Compositional Tuning of the A-and X-sites

Contact Info

Product

Resources

About

A new approach for growing high-quality delafossite CuCoO2 films by spray pyrolysis through the optimization of the Cu/Co ratio

Cited by 12 publications

References 66 publications

Photochemically-Activated p-Type CuGaO2 Thin Films for Highly-Stable Room-Temperature Gas Sensors

Photochemically-Activated p-Type CuGaO2 Thin Films for Highly-Stable Room-Temperature Gas Sensors

The Use of Copper-Based Delafossite to Improve Hydrogen Production Performance: A Review

Boosting the Stability at Room Atmosphere of Lead Halide Perovskites Through a Simultaneous Compositional Tuning of the A-and X-sites

Contact Info

Product

Resources

About

Photochemically-Activated p-Type CuGaO₂ Thin Films for Highly-Stable Room-Temperature Gas Sensors

Photochemically-Activated p-Type CuGaO₂ Thin Films for Highly-Stable Room-Temperature Gas Sensors