Searched for: subject%3A%22bandgap%22
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Mian, Osama (author)
Vibrations have been studied in various engineering fields due to their detrimental and even destructive effects on structures. Suppressing low-frequency vibrations has been a research challenge for decades and is mostly achieved by implementing active vibration control techniques. In the last two decades, the emergence of locally resonant...
master thesis 2023
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Zhu, Zitao (author)
This report presents a bandgap reference voltage source that achieves 5-sigma Inaccuracy of ±0.5% from -40C to 150C under 16FFC process. This is the first time 16nm techniques are used in automotive products and the first time trying to realize analog circuits in such a process for in-vehicle network purposes. The report points to good behavior...
master thesis 2023
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Muthaiyan Karthikeyen, Shriram (author)
Thin-film silicon photovoltaic (PV) technology has an enormous potential in the solar power market due to its light weight, flexibility and ease of integration. This enables it to have a wide range of applications like roof top and building integrated installations making it more sustainable. Some of the other key benefits of thin-film silicon...
master thesis 2023
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Coatto, Francesco (author)
Undesired vibrations are one of the most significant sources of error in any type of mechatronic system or component. The emerging field of elastic (locally resonant) metamaterials offers a viable solution to successfully suppress these by generating bandgaps in both resonant and non-resonant regions. In this thesis, metamaterials in a sensor...
master thesis 2023
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Sharma, Devansh (author)
Low-cost multijunction photovoltaic devices are the next step in the solar energy revolution. Adding a bottom junction with a low bandgap energy material through plasma-enhanced chemical vapour deposition (PECVD) processing could provide a low-cost boost in conversion efficiency. A logical candidate for this low-bandgap material is germanium. A...
master thesis 2023
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Romijn, J. (author), Vollebregt, S. (author), de Bie, Vincent G. (author), Middelburg, L.M. (author), el Mansouri, B. (author), van Zeijl, H.W. (author), May, Alexander (author), Erlbacher, Tobias (author), Leijtens, J.A.P. (author), Zhang, Kouchi (author), Sarro, Pasqualina M (author)
The next generation of satellites will need to tackle tomorrow's challenges for communication, navigation and observation. In order to do so, it is expected that the amount of satellites in orbit will keep increasing, form smart constellations and miniaturize individual satellites to make access to space cost effective. To enable this next...
journal article 2023
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Mazumder, Sudip K. (author), Voss, Lars F. (author), Dowling, K.M. (author), Conway, Adam (author), Hall, David (author), Kaplar, Robert J. (author), Pickrell, Greg (author), Flicker, Jack (author), Binder, Andrew (author)
This article provides an overview of power semiconductor devices (PSDs) for the distributed energy resource (DER) system. To begin with, an overview of electrically triggered silicon carbide (SiC) and gallium nitride (GaN) devices followed by a brief narration of ultrawide bandgap (UWBG) PSDs and, subsequently, an overview of optically...
journal article 2023
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Kaczmarek, M.B. (author), Hassan HosseinNia, S. (author)
Elastic metamaterials incorporating locally resonating unit cells can create bandgap regions with lower vibration transmissibility at longer wavelengths than the lattice size and offer a promising solution for vibration isolation and attenuation. However, when resonators are applied to a finite host structure, not only the bandgap but also...
journal article 2023
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Klein, Julian (author), Kampermann, Laura (author), Mockenhaupt, B.M. (author), Behrens, Malte (author), Strunk, Jennifer (author), Bacher, Gerd (author)
The Tauc plot is a method originally developed to derive the optical gap of amorphous semiconductors such as amorphous germanium or silicon. By measuring the absorption coefficient α(hν) and plotting (Formula presented.) versus photon energy hν, a value for the optical gap (Tauc gap) is determined. In this way non-direct optical transitions...
journal article 2023
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van der Lippe, Stijn (author), Brokkelkamp, A.R. (author), Rojo, Juan (author), Conesa Boj, S. (author)
This study presents an in-depth investigation of the electronic properties and bandgap energy distribution in 1D molybdenum disulfide (1D-MoS<sub>2</sub>) nanostructures. Through a combination of high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM) and electron energy-loss spectroscopy (EELS), it reveals...
journal article 2023
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Sattari, R. (author), van Zeijl, H.W. (author), Zhang, Kouchi (author)
Wide bandgap (WBG) semiconductor technologies enable significant progress in the emergence of power modules. Power cycling at elevated temperatures causes crack or delamination failure, especially at the die-attached bonded interface in the long term. Therefore, the in-situ reliability investigation of power modules, materials, and...
conference paper 2023
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Romijn, J. (author)
doctoral thesis 2022
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Shaikh, Raiyan (author)
Emerging PV technologies like Perovskite has lead to the development of Perovskite/Silicon (Pvk/c-Si) tandem device (Multi-junction device) and has now gained a lot of momentum and attention due to the fact that the tandem device can reach a Shockley-Quisser limit of about 44.1% efficiency. But to speed up its development, a lot of emphasis is...
master thesis 2022
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Romijn, J. (author), Vollebregt, S. (author), May, Alexander (author), Erlbacher, Tobias (author), van Zeijl, H.W. (author), Leijtens, J.A.P. (author), Zhang, Kouchi (author), Sarro, Pasqualina M (author)
In this paper, we present a quadrant sun position sensor microsystem device in a silicon carbide technology that operates in a field-of-view of ±33° and reaches a mean error of 1.9° in this range. This will allow, for the first time, an inherently visible blind sun position sensor in a CMOS compatible technology. Opto-electronic integration of...
conference paper 2022
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de Vrijer, T. (author), Roodenburg, Koos (author), Saitta, F.S. (author), Blackstone, Thijs (author), Limodio, G. (author), Smets, A.H.M. (author)
An alloy based on the group IV elements germanium and tin has the potential of yielding an earth-abundant low bandgap energy semiconductor material with applications in the fields of micro-electronics, optics, photonics and photovoltaics. In this work, the first steps towards the plasma enhanced chemical vapour deposition (PECVD) processing of a...
journal article 2022
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Romijn, J. (author), Vollebregt, S. (author), Middelburg, L.M. (author), el Mansouri, B. (author), van Zeijl, H.W. (author), May, Alexander (author), Erlbacher, Tobias (author), Zhang, Kouchi (author), Sarro, Pasqualina M (author)
The wide bandgap of silicon carbide (SiC) has attracted a large interest over the past years in many research fields, such as power electronics, high operation temperature circuits, harsh environmental sensing, and more. To facilitate research on complex integrated SiC circuits, ensure reproducibility, and cut down cost, the availability of a...
journal article 2022
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Azevedo Vasconcelos, A.C. (author), Jovanova, J. (author)
Elastic metamaterials – man-made resonant structures exhibiting unusual functionalities – have shown promising results for controlling structural vibration, specially at a low frequency regime. Such functionalities rely on the presence of resonant bandgaps, which consists of a frequency band where waves cannot propagate in response to the out-of...
conference paper 2022
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Gross Godoy, JOSE (author)
Individual actions cannot solve the current climate crisis. Part of the collective effort is to research solar energy as new ways to produce cleaner, cheaper and more efficient electricity. Among all the current solar cell technologies, a thriving and promising one is perovskite as an absorber material. In the last ten years, the power...
master thesis 2021
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Romijn, J. (author), Middelburg, L.M. (author), Vollebregt, S. (author), el Mansouri, B. (author), van Zeijl, H.W. (author), May, Alexander (author), Erlbacher, Tobias (author), Zhang, Kouchi (author), Sarro, Pasqualina M (author)
Accurately sensing the temperature in silicon carbide (power) devices is of great importance to their reliable operation. Here, temperature sensors by resistive and CMOS structures are fabricated and characterized in an open silicon carbide CMOS technology. Over a range of 25-200°C, doped design layers have negative temperature coefficients of...
conference paper 2021
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Roest, Laurien I. (author), van Heijst, S.E. (author), Maduro, L.A. (author), Rojo, Juan (author), Conesa Boj, S. (author)
Exploiting the information provided by electron energy-loss spectroscopy (EELS) requires reliable access to the low-loss region where the zero-loss peak (ZLP) often overwhelms the contributions associated to inelastic scatterings off the specimen. Here we deploy machine learning techniques developed in particle physics to realise a model...
journal article 2021
Searched for: subject%3A%22bandgap%22
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