Effects of various types of hydrogen dopants on optical properties of ZnO

Afruz, Fahime Bustan; Tafreshi, Majid Jafar; Mohammadizadeh, Mohammad R.; Fazli, Mostafa

doi:10.1016/j.ijleo.2019.05.021

Cited by 3 publications

(1 citation statement)

References 39 publications

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“…The growth, properties, and mechanism of zinc oxide‐based TCO films have been widely studied for applications in thin‐film solar cells. Generally, zinc oxide‐based TCO films with excellent optical and electrical properties need to be prepared under some specific conditions, such as controlled temperature, sputtering gas, and suitable power density 21–24 . Yet, owing to the stability and interface issue of deposited silicon layers in SHJ solar cells and fast deposition requirements for high throughput and low cost, DC sputtering of zinc oxide‐based TCO films at room temperature is highly desired.…”

Section: Introductionmentioning

confidence: 99%

Highly efficient silicon heterojunction solar cells with ZnO:Al transparent electrode and transition metal doped indium oxide interfacial layer

Dong¹,

Yu³

et al. 2023

Progress in Photovoltaics

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Indium consumption is the roadblock for terawatt‐scale silicon heterojunction (SHJ) solar cells. Here, we report that M6 wafer scale SHJ cells reached an efficiency of 24.94% using room temperature DC sputtering deposited ZnO:Al (AZO) transparent electrode. Compared with indium tin oxide (ITO) standard cells, interfacial contact and smaller bandgap are observed to be the main factors that limit the AZO solar cell performance. By introducing a transition metal doped indium oxide (IMO) interfacial layer, significantly higher SHJ cell performance is achieved owing to better interface and AZO quality. With increasing IMO thickness, the conversion efficiency of SHJ cells surpasses that of the ITO reference cell when only about 50% of indium is consumed. The certified efficiency of the SHJ cells with stacked transparent electrodes reached 25.62%, which is one of the best results for low‐indium SHJ cells. The present work provides a novel and practical solution to overcome the shortage of indium resources for terawatt‐scale SHJ cells.

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Section: Introductionmentioning

confidence: 99%

Highly efficient silicon heterojunction solar cells with ZnO:Al transparent electrode and transition metal doped indium oxide interfacial layer

Dong¹,

Yu³

et al. 2023

Progress in Photovoltaics

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Photocatalysis

Wu¹,

Yang²,

Zhou³

et al. 2023

Theoretical and Computational Photochemistry

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X-ray diffractometer, FTIR and theoretical approach of topological analysis of covellite single crystal

Solanki,

Jani,

Vyas

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part E:

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Covellite (CuS) is a mineral sulfide with a multitude of potential applications in various technical fields. While it possesses a basic formula, its structure is complex, featuring alternating layers of planar CuS3 triangles and CuS4 tetrahedrons interconnected by S–S bonds. To gain a deeper understanding of Covellite's structural, mechanical and electrical properties, as well as its chemical bonding, extensive research utilizing X-ray diffractometer, FTIR and first-principles calculations have been conducted on its covalent Structure (CuS). The DFT and DFT + U methods were employed, revealing their sensitivity to the correlation treatment (U value). Although a universal U value cannot be determined, this investigation identifies U = 5.5 eV as an appropriate quantity. The examination of the electronic structure uncovers a significant metallic character attributable to the p(S)-d(Cu) orbital interactions up to the Fermi level. Moreover, the estimated density of states illustrates that the atomic contribution primarily arises from the 3d1 orbitals, which ultimately induce the [2D] plane conductivity anisotropy of Covellite. Additionally, the electron density underwent a topological analysis using the Quantum ESPRESSO PW software, leading to the computation of two distinct topological charges associated with Cu. This finding substantiates the presence of an iconic model featuring mixed charges. The covalent nature of the S–S bond receives support from the DFT analysis, and it is plausible that the preferential cleavage of CuS occurs at the [2D] surface, specifically at the CuS bond. It is worth noting that the S atoms constitute the majority of the cell volume and possess a dominant influence on the crystal's compressibility.

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Effects of various types of hydrogen dopants on optical properties of ZnO

Cited by 3 publications

References 39 publications

Highly efficient silicon heterojunction solar cells with ZnO:Al transparent electrode and transition metal doped indium oxide interfacial layer

Highly efficient silicon heterojunction solar cells with ZnO:Al transparent electrode and transition metal doped indium oxide interfacial layer

Photocatalysis

X-ray diffractometer, FTIR and theoretical approach of topological analysis of covellite single crystal

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