Optoelectronic properties of transparent conducting CdO:ZnO composite thin films by RF-magnetron sputtering

Cheemadan, Saheer; Kumar, M.C. Santhosh

doi:10.1007/s10854-022-08468-3

Cited by 2 publications

(1 citation statement)

References 26 publications

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“…On the other hand, CdO has been highlighted for its potential application as a transparent conductive oxide (TCO) layer in solar cells [27,28]. An intriguing aspect of CdO is its ability to be deposited as thin films during air annealing, leading to a thin CdO layer [29,30].…”

Section: Introductionmentioning

confidence: 99%

Advanced Synthesis and Characterization of CdO/CdS/ZnO Heterostructures for Solar Energy Applications

Suchikova,

Kovachov,

Bohdanov

et al. 2024

Materials

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This study introduces an innovative method for synthesizing Cadmium Oxide /Cadmium Sulfide/Zinc Oxide heterostructures (CdO/CdS/ZnO), emphasizing their potential application in solar energy. Utilizing a combination of electrochemical deposition and oxygen annealing, the research provides a thorough analysis of the heterostructures through scanning electron microscopy (SEM), energy-dispersive X-ray (EDX) spectroscopy, X-ray diffraction (XRD), Raman spectroscopy, and photoluminescence (PL) spectroscopy. The findings reveal a complex surface morphology and a composite structure with significant contributions from hexagonal CdS and cubic CdO phases. The study highlights the uniformity in the distribution of luminescent centers and the crystalline quality of the heterostructures, which is evident from the PL analysis. The redshift observed in the emission peak and the additional peaks in the excitation spectrum indicate intricate optical properties influenced by various factors, including quantum confinement and lattice strain. The research demonstrates these heterostructures’ potential in enhancing solar cells’ efficiency and applicability in optoelectronic devices. This comprehensive characterization and analysis pave the way for future optimization and application in efficient and sustainable solar energy solutions.

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Section: Introductionmentioning

confidence: 99%

Advanced Synthesis and Characterization of CdO/CdS/ZnO Heterostructures for Solar Energy Applications

Suchikova,

Kovachov,

Bohdanov

et al. 2024

Materials

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Ultrahigh Thermoelectric Performance of ZnO-CdO Thin Films

Karim,

Rumana Islam,

Khatun

et al. 2023

J. Electron. Mater.

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Zinc oxide (ZnO) is emerging as a promising n-type thermoelectric material (TE) for power harvesting due to its high melting point and large Seebeck coefficient. However, the TE performance of ZnO is limited by high thermal conductivity and low carrier mobility. Adding or doping a divalent element such as cadmium oxide (CdO) can lower the thermal conductivity and enhance the carrier concentration of ZnO. In this paper, the thermoelectric transport properties of ZnO-CdO nanocrystalline thin films are investigated by varying the Zn/Cd ratio at temperatures ranging from room temperature (RT) to 423 K. The electrical conductivity, carrier concentration and mobility of ZnO were enhanced by increasing the Cd concentration. The maximum power factor of 2.75 × 10−4 W m−1 K−2 was obtained at 423 K for the Zn/Cd = 1:3 sample. The thermal conductivity was dominated by lattice thermal conductivity in which Umklapp scattering occurs between anharmonic phonons. The thermal conductivity of ZnO decreased significantly with increasing Cd concentration. The highest estimated figure of merit (ZT) of 0.59 was found at 413 K for the Zn/Cd = 1:3 sample, which is 223 times greater than for ZnO, indicating that the film is efficient in energy generation.

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Optoelectronic properties of transparent conducting CdO:ZnO composite thin films by RF-magnetron sputtering

Cited by 2 publications

References 26 publications

Advanced Synthesis and Characterization of CdO/CdS/ZnO Heterostructures for Solar Energy Applications

Advanced Synthesis and Characterization of CdO/CdS/ZnO Heterostructures for Solar Energy Applications

Ultrahigh Thermoelectric Performance of ZnO-CdO Thin Films

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