Searched for: subject:"Silicon"
(1 - 20 of 45)

Pages

document
Li, Sihui (author)
Martensitic and bainitic steels are two types of widely used steels with excellent mechanical behaviors in automatic industry. It’s universally acknowledged that as- quenched martensite possesses poor ductility and impact toughness, which should be tempered before putting into application. During tempering, as-quenched martensite changes from a...
master thesis 2017
document
van den Akker, Dirk (author)
This master thesis discusses the development of a hybrid manufacturing system that combines multi-material 3D-printing with silicone casting. The parties involved in this project were soft robotics research group at the University of Technology Delft and Ultimaker. Ultimaker served an advisory role and helped in providing the needed hardware....
master thesis 2017
document
Stam, Machiel (author)
In the transition towards a renewable based energy supply, one of the main challenges is the intermittent nature of most renewable energy sources. In order to ensure a stable energy supply, different storage technologies attract a lot of research attention. For long term storage, using hydrogen as artificial fuel is a promising option. However,...
master thesis 2017
document
de Bie, Michiel (author)
This document covers the design process of a localized heating system suitable for retrofitting to buildings in the Netherlands
master thesis 2017
document
Chaudhary, Aditya (author)
A tremendous amount of research in improving the efficiency of the single junction crystalline silicon (c-Si) based solar cells has brought its efficiency (26.6%) close to the theoretical maximum achievable conversion
efficiency (29.43%) [1–3]. Thus to further improve the efficiency, new avenues of reducing losses need to be opened up. One...
master thesis 2017
document
Kao, Joe (author)
PowerWindow is a luminescent solar concentrator which employs a Tm2+-doped material to strongly absorb sunlight and produce a sharp emission in the near-infrared spectrum for energy-harvesting purposes. The absence of self-absorption and the large spectral overlap with the solar spectrum make it an attractive addition to current building...
master thesis 2017
document
Soto Martinez, Miguel (author)
To enable the next generation subsea boosting and processing facilities, high power electrical connectors are strongly needed and considered one of the most critical components of the system.
Electrical tree growth is a precursor to electrical breakdown in high voltage insulation materials. Therefore, the study of the tree growth dependency...
master thesis 2017
document
Ge, H. (author)
To improve the conversion efficiency of c-Si solar cells, it is crucial to quench the recombination losses at c-Si/metal interface. Such recombination losses are able to be reduced by using carrier-selective passivating contacts by means of hydrogenated amorphous silicon (a-Si:H) and poly-crystalline silicon (poly-Si)/tunneling silicon oxide ...
master thesis 2017
document
Zhang, Y. (author)
Crystalline silicon (c-Si) solar cells based on the polycrystalline silicon (poly-Si) passivating contact is becoming one of the most promising solar cell structures that enable high efficiency due to the minimization of metal contact recombination. The interdigitated back contact (IBC) crystalline silicon (c-Si) solar cells based on poly-Si...
master thesis 2017
document
Phung, T.T.N. (author)
To reduce the usage of Indium (rare material) in CIGS, ultra thin, high efficiency CIGS based solar devices have been developed in our group. One approach is to fabricate hybrid tandem cells between hydrogenated amorphous silicon and CIGS. Because the a-Si:H top sub-cell limits the current of such a device, it is desirable to texture the top...
master thesis 2017
document
Mostert, E. (author)
Electrical trains are fed with a high voltage to reduce transmission losses. In the train, these voltages have to be stepped down to a voltage that could be fed into the traction motors. This is done with IGBT based power converters. The use of IGBTs in power converters has some disadvantages: they generate a lot of heat and are therefore not...
master thesis 2017
document
Hulsebos, M. (author)
With electron beam lithography, a cutting edge technology has been developed that might introduce new possibilities in the design of chips. The word "might" has been used here because e-beam lithography is not yet available for the mass production market. One of the bottlenecks in the development of e-beam lithography is the positioning...
master thesis 2017
document
Harsha Achanta, S. (author)
: Light emitting diodes (LEDs) have made remarkable progress since their invention and today they can be found in a wide range of applications such as TV remotes, automotive headlamps, general lighting, traffic signals, camera flashes, display and screens. LEDs that emit light in the ultraviolet-C (UV-C) range are used in applications such as...
master thesis 2016
document
van Schie, R.S. (author)
The aim of this study is to analyse the individual cells of a micromorph tandem solar cell by dark current-voltage characteristics and to study the e ffect of temperature on the individual subcells of the device, being amorphous silicon and microcrystalline silicon. Special focus is placed on studying the temperature-dependent voltage...
master thesis 2016
document
Dahar, S. (author)
This thesis presents a fabrication process for medical microfluidic devices that is performed with purely silicon microfabrication methods, which is a better option for mass-production than commonly used soft lithography. The fluids passing through the channels of a microfluidic device that is fabricated using this developed method can be...
master thesis 2016
document
Quik, J. (author)
Silicon nanoparticles (NPs) embedded in a dielectric matrix, such as silicon oxide, pose a promising candidate for all-silicon multi-junction solar cells. This material is often analysed with photoluminescence (PL) measurements. In literature, the intensities of different PL measurements are either directly compared or normalized. Normalization...
master thesis 2016
document
Apte, A.A. (author)
The low conversion efficiency of thin-film silicon solar cells currently prevents them from competing, commercially, with the dominant crystalline silicon technology. The small thickness of the photo-active layer in thin-film silicon solar cells is an advantage for reducing raw material consumption and increasing industrial throughput, but...
master thesis 2015
document
Thomas, S. (author)
Optical coherence tomography (OCT) probes rely on MEMS micro-scanners to provide fast and reproducible scans covering as much area as possible. A popular choice of actuators employed in this role are electrothermal bimorph actuators. They comprise of two layers of different materials which are rigidly joined together. Differential expansion...
master thesis 2015
document
Panagiotopoulos, D. (author)
In several electrical insulation components, such as cable connectors, joints and penetrators, various solid insulating materials are usually brought in contact, forming interfaces. The dielectric strength of these solid$|$solid interfaces is critical for the strength of the overall system. Especially in cases that the applied field has a...
master thesis 2015
document
Bras, J.A. (author)
Photoelectrochemical (PEC) water splitting is an elegant method to generate renewable hydrogen fuel from water by utilizing the abundant solar energy. Silicon (Si) as a semiconducting photoanode for PEC water splitting has received a growing interest due to the natural abundance of Si, its light absorbing ability, its excellent electronic...
master thesis 2015
Searched for: subject:"Silicon"
(1 - 20 of 45)

Pages