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| CERBERUS – Farebné centrá v diamante – korelácia medzi atómovou štruktúrou a optoelektronickými vlastnosťami | |
| Colour centres in diamond – correlation between atomic structure and opto-electronic properties | |
| Program: | SRDA |
| Project leader: | Ing. Varga Marian, PhD. |
| Annotation: | The subject of the project is in the field of quantum technologies. We will prepare and characterize optically -activedefects in diamonds and correlate the atomic structures with optical properties to be used for quantum applicati ons.For a wide range of dopant concentrations, we will identify the dopant distributions and study the evolution ofdopants’ configuration in-situ, during thermal annealing, using atomic-resolution microscopy and spectroscopytechniques. We will further study the effect of annealing on the opto-electronic properties by measuringphotoluminescence, photocurrent and electroluminescence for the same set of samples. Graphene transparentelectrodes on a diamond surface will be fabricated for phototransport measurements. Diamond-based hybrid p-i-ndiodes will be prepared for electroluminescence measurements. We will focus on finding a correlation between theatomic structure and the opto-electronic properties of differently doped diamonds. This will contribute to theunderstanding of the fundamental relationship needed to efficiently design optically -active elements for diamondquantum devices. |
| Duration: | 1.9.2024 – 31.12.2027 |
| Veľkoplošná výroba a charakterizácia 2D materiálov | |
| Large-scale production and characterization of 2D materials | |
| Program: | Plán obnovy EÚ |
| Project leader: | Mgr.Phil. Ahmad Faizan |
| Annotation: | Two-dimensional (2D) materials, including transition metal dichalcogenides (TMDs) such as molybdenum disulfide (MoS2) or platinum diselenide (PtSe2), are one of the promising materials and a gateway to modern technologies and optoelectronics. Currently, there is a lot of research that studies fabrication of TMDs by chemical vapour deposition (CVD), which makes the use of these 2D materials in the electronic market feasible. The use of alternative methods such as pulsed laser deposition (PLD) also opens up new possibilities in this field and can provide comparative results to elucidate the growth optimization. The available CVD and PLD systems in IEE SAS will be used to study the fundamental aspect of the growth and properties of TMD materials. For research-related activities, the optimized TMD layers are typically grown on standard 1×1 cm2 substrates. However, from a technological point of view, upscaling the fabrication process is a big challenge. Many times, the deposition conditions (temperature, gas flow, pressure, power, etc.) used for small-scale samples preparation may not work well on a larger scale. Thus, the study and optimization of large-scale (4-inch) fabrication will be a new chapter in this interesting field of 2D materials research. The PhD thesis will be focused mainly on the development of technological procedures for the preparation of precisely defined, homogeneous and reproducible TMD layers on large areas using a newly installed two-zone furnace. In addition, a comprehensive characterization of the surface and bulk properties (including morphological, chemical, optical and opto-electronic properties) of the fabricated 2D materials is also expected. |
| Duration: | 1.9.2023 – 30.6.2026 |