5 results match your criteria: "School of Multi-disciplinary Engineering Addis Ababa 1000 Ethiopia.[Affiliation]"
Effect of temperature on structural, dynamical, and electronic properties of ScTe from first-principles calculations.
RSC Adv
November 2022
Center for Materials Engineering, Addis Ababa Institute of Technology, School of Multi-disciplinary Engineering Addis Ababa 1000 Ethiopia.
The compounds ScTe and SbTe have the same crystal structure. Ge-Sb-Te alloys are also the most common prototype phase change memory (PCM) compounds in the GeTe-SbTe pseudo-binary combination. Recently, alloying Sc atoms into SbTe has enabled sub-nanosecond switching in large conventional phase-change random access memory (PCRAM) devices.
View Article and Find Full Text PDFFirst-principles investigation of potential water-splitting photocatalysts and photovoltaic materials based on Janus transition-metal dichalcogenide/WSe heterostructures.
RSC Adv
November 2022
Center for Materials Engineering, Addis Ababa Institute of Technology, Addis Ababa University, School of Multi-disciplinary Engineering Addis Ababa 1000 Ethiopia +251 902639816.
Article Synopsis
- Two-dimensional materials like MoSSe/WSe, WSSe/WSe, and WSeTe/WSe show promising properties for applications in photovoltaics and photocatalysis, as they have advantageous type II band alignments for separating electron-hole pairs.
- The electronic band gaps for these heterostructures are measured at 1.093 eV, 1.427 eV, and 1.603 eV, with the binding energies indicating strong stability and favorable interlayer spaces.
- Power Conversion Efficiency (PCE) rates for these materials reach up to 20%, making them suitable for solar cells, while WSeTe/WSe also demonstrates excellent photocatalytic activity, especially for full water splitting at neutral and alkaline
DFT investigation of the electronic and optical properties of hexagonal MX/ZrXO (M = W, Mo and X = S, Se) van der Waals heterostructures for photovoltaic solar cell application.
RSC Adv
October 2022
Centre for Materials Engineering, Addis Ababa Institute of Technology, Addis Ababa University, School of Multi-disciplinary Engineering Addis Ababa 1000 Ethiopia +251 902639816.
The van der Waals heterostructure of Janus materials with a TMD monolayer was used to create a two-dimensional class of nanomaterials for photovoltaic solar cell applications. It is one of the potential methods for enhancing the performance of photovoltaic systems. Two monolayers of different 2D materials, Janus (ZrXO) and TMDs (MX), are stacked together to form the heterojunction.
View Article and Find Full Text PDFTwo-dimensional MXO/MoX (M = Hf, Ti and X = S, Se) van der Waals heterostructure: a promising photovoltaic material.
RSC Adv
July 2022
Department of Physics, College of Natural and Social Science, Addis Ababa Science and Technology University P. O. Box 16417 Addis Ababa Ethiopia +251 966 253 809.
Nanoscale materials with multifunctional properties are necessary for the quick development of high-performance devices for a wide range of applications, hence theoretical research into new two-dimensional (2D) materials is encouraged. 2D materials have a distinct crystalline structure that leads to intriguing occurrences. Stacking diverse two-dimensional (2D) materials has shown to be an efficient way for producing high-performance semiconductor materials.
View Article and Find Full Text PDFJanus transition metal dichalcogenides in combination with MoS for high-efficiency photovoltaic applications: a DFT study.
RSC Adv
May 2022
Center for Materials Engineering, Addis Ababa Institute of Technology, School of Multi-disciplinary Engineering Addis Ababa 1000 Ethiopia
Exotic features of two-dimensional materials have been demonstrated, making them particularly appealing for both photocatalytic and photovoltaic applications. van der Waals corrected density functional theory calculations were performed on AAII-Se MoSSe, AAII-Te MoSTe, and AAII-Se WSSe heterostructures in this study. Our findings reveal that the heterostructures have high stability due to the tiny lattice mismatch and binding energy, which is extremely favorable for epitaxial growth of these heterostructures.
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