Searched for: subject:"semiconductor"
(1 - 20 of 191)

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de Moor, M.W.A. (author)
Quantum technology is a promising area of research, with the quantum computer as the prime example. Quantum computers can perform calculations thought to be impossible by conventional means. The fundamental building block of a quantum computer is a qubit, which is a quantumsystem which can be used to process and store quantuminformation. Most...
doctoral thesis 2019
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Proutski, A. (author)
Materials possessing superconducting properties are highly sought after due to their potential technological applications. Much of the work has focused on utilising a thin insulating barrier separating a pair of superconducting electrodes, a Josephson junction, as a workhorse in the field of superconducting based quantumcomputation. Yet such...
doctoral thesis 2019
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Xin, Yu (author), Pandraud, G. (author), French, P.J. (author)
In this Letter, a slope transfer method to fabricate vertical waveguide couplers is proposed. This method utilises wet etched Si as a mask, and takes advantage of dry etching selectivity between Si and SiC, to successfully transfer the profile from the Si master into SiC. By adopting this method, a <2° slope is achieved. Such a taper can...
journal article 2019
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Grimaldi, G. (author), Kinge, Sachin (author), Houtepen, A.J. (author), Siebbeles, L.D.A. (author)
Carrier multiplication (CM) is the process in which multiple electron–hole pairs are created upon absorption of a single photon in a semiconductor. CM by an initially hot charge carrier occurs in competition with cooling by phonon emission, with the respective rates determining the CM efficiency. Up until now, CM rates have only been calculated...
journal article 2019
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Poltorak, L. (author), Verheijden, Mark L. (author), Bosma, D. (author), Jonkheijm, Pascal (author), de Smet, L.C.P.M. (author), Sudholter, Ernst J. R. (author)
Silicon semiconductors with a thin surface layer of silica were first modified with polyelectrolytes (polyethyleneimine, polystyrene sulfonate and poly(allylamine)) via a facile layer-by-layer deposition approach. Subsequently, lipid vesicles were added to the preformed polymeric cushion, resulting in the adsorption of intact vesicles or...
journal article 2018
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Ganesan, Abiseka Akash (author), Houtepen, A.J. (author), Crisp, R.W. (author)
From a niche field over 30 years ago, quantum dots (QDs) have developed into viable materials for many commercial optoelectronic devices. We discuss the advancements in Pb-based QD solar cells (QDSCs) from a viewpoint of the pathways an excited state can take when relaxing back to the ground state. Systematically understanding the fundamental...
review 2018
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Pilavaki, Evdokia (author), Valente, V. (author), Demosthenous, Andreas (author)
Point-of-care systems for the detection of infectious diseases are in great demand especially in developing countries. Lateral flow immunoassays are considered ideal biosensors for point-of-care diagnostics due to their numerous advantages. However, to quantify their results a low power, robust electronic reader is needed. A low power CMOS...
journal article 2018
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Gagliano, L (author), Kruijsse, M. (author), Schefold, J. D.D. (author), Belabbes, A. (author), Verheijen, M.P.A.M. (author), Meuret, Sophie (author), Kölling, S. (author), Polman, A (author), Bechstedt, F. (author), Haverkort, Jos E.M. (author), Bakkers, E.P.A.M. (author)
Direct band gap III-V semiconductors, emitting efficiently in the amber-green region of the visible spectrum, are still missing, causing loss in efficiency in light emitting diodes operating in this region, a phenomenon known as the "green gap". Novel geometries and crystal symmetries however show strong promise in overcoming this limit. Here...
journal article 2018
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Lee, M.J. (author), Ronchini Ximenes, A. (author), Padmanabhan, P. (author), Wang, Tzu Jui (author), Huang, Kuo Chin (author), Yamashita, Yuichiro (author), Yaung, Dun Nian (author), Charbon, E.E.E. (author)
We present a high-performance back-illuminated three-dimensional stacked single-photon avalanche diode (SPAD), which is implemented in 45-nm CMOS technology for the first time. The SPAD is based on a P<sup>+</sup>/Deep N-well junction with a circular shape, for which N-well is intentionally excluded to achieve a wide depletion region, thus...
journal article 2018
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Incandela, R.M. (author), Song, L (author), Homulle, Harald (author), Charbon, E.E.E. (author), Vladimirescu, A. (author), Sebastiano, F. (author)
Cryogenic characterization and modeling of two nanometer bulk CMOS technologies (0.16-&amp;#x03BC;m and 40-nm) are presented in this paper. Several devices from both technologies were extensively characterized at temperatures of 4 K and below. Based on a detailed understanding of the device physics at deep-cryogenic temperatures, a compact...
journal article 2018
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Gül, Önder (author)
The dissertation reports a series of electron transport experiments on semiconductor nanowires towards realizing the hypothesized topological quantum computation. A topological quantum computer manipulates information that is stored nonlocally in the topology of a physical system. Such an operation possesses advantages over the current quantum...
doctoral thesis 2017
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Assali, S. (author), Lähnemann, J. (author), Vu, TTT (author), Jöns, K.D. (author), Gagliano, L (author), Verheijen, M. A. (author), Akopian, N. (author), Bakkers, E.P.A.M. (author), Haverkort, J. E.M. (author)
One of the major challenges in the growth of quantum well and quantum dot heterostructures is the realization of atomically sharp interfaces. Nanowires provide a new opportunity to engineer the band structure as they facilitate the controlled switching of the crystal structure between the zinc-blende (ZB) and wurtzite (WZ) phases. Such a...
journal article 2017
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Brenes, Roberto (author), Guo, D. (author), Osherov, Anna (author), Noel, Nakita K. (author), Eames, Christopher (author), Hutter, E.M. (author), Pathak, Sandeep K. (author), Niroui, Farnaz (author), Friend, Richard H. (author), Islam, M. Saiful (author), Snaith, Henry J. (author), Bulović, Vladimir (author), Savenije, T.J. (author), Stranks, Samuel D. (author)
Metal halide perovskites are generating enormous excitement for use in solar cells and light-emission applications, but devices still show substantial non-radiative losses. Here, we show that by combining light and atmospheric treatments, we can increase the internal luminescence quantum efficiencies of polycrystalline perovskite films from 1...
journal article 2017
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van Woerkom, D.J. (author)
Due to the collective behavior of electrons, exotic states can appear in condensed matter systems. In this PhD thesis, we investigate semiconducting nanowire Josephson junctions that potentially have Majorana zero modes (MZM) as exotic states. MZM are expected to form a robust quantum bit and quantum operations are done by interchange, otherwise...
doctoral thesis 2017
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Shafqat, Salman (author), Hoefnagels, Johan P.M. (author), Savov, A.M. (author), Joshi, S. (author), Dekker, R. (author), Geers, Marc G.D. (author)
The exciting field of stretchable electronics (SE) promises numerous novel applications, particularly in-body and medical diagnostics devices. However, future advanced SE miniature devices will require high-density, extremely stretchable interconnects with micron-scale footprints, which calls for proven standardized (complementary metal-oxide...
journal article 2017
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Qian, Cheng (author), Fan, Jiajie (author), Fan, Xuejun (author), Zhang, G.Q. (author)
The spectral power distribution (SPD) is considered as the figureprint of a light emitting diode (LED). Based on the analysis on its SPD, a method to predict both lumen depreciation and color shift for the phosphor converted white LEDs (pc-LEDs) is proposed in this paper. First, the entire SPD of a pc-LED is predicted by superimposing two...
journal article 2017
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van Berkel, S.L. (author), Malotaux, E.S. (author), Cavallo, D. (author), Spirito, M. (author), Neto, A. (author), Llombart Juan, N. (author)
The design and performance analysis are presented for a passive uncooled radiometer pixel suitable for integration in 28 nm CMOS technology. In the configuration a single wideband antenna, operating from 200 GHz to 600 GHz, is connected to a pn-junction diode. Including the antenna-detector impedance mismatch, the detector shows an average NEP...
conference paper 2017
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Bogdanovic, S. (author), van Dam, S.B. (author), Bonato, C. (author), Coenen, Lisanne C. (author), Zwerver, A.M.J. (author), Hensen, B.J. (author), Liddy, M.S.Z. (author), Fink, Thomas (author), Reiserer, A.A. (author), Loncar, M. (author), Hanson, R. (author)
We report on the fabrication and characterization of a Fabry-Perot microcavity enclosing a thin diamond membrane at cryogenic temperatures. The cavity is designed to enhance resonant emission of single nitrogen-vacancy centers by allowing spectral and spatial tuning while preserving the optical properties observed in bulk diamond. We demonstrate...
journal article 2017
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Garufo, A. (author), Carluccio, G. (author), Freeman, Joshua R. (author), Bacon, David R. (author), Llombart Juan, N. (author), Davies, Alexander G. (author), Neto, A. (author)
In this paper a rigorous electromagnetic characterization of the setup for measuring the THz power radiated by pulsed photoconductive antenna is discussed. Such characterization is expressed in terms of efficiencies which quantify how much power is lost in the coupling between the various components involved in the measurement setup. The...
conference paper 2017
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Latkowski, S (author), Van Veldhoven, P. J. (author), Hänsel, A. (author), D'Agostino, D. (author), Rabbani-Haghighi, H. (author), Docter, B. (author), Bhattacharya, N. (author), Thijs, P. J A (author), Ambrosius, H. P M M (author), Smit, M (author), Williams, KA (author), Bente, E.A.J.M. (author)
In this paper a generic monolithic photonic integration technology platform and tunable laser devices for gas sensing applications at 2 μm will be presented. The basic set of long wavelength optical functions which is fundamental for a generic photonic integration approach is realized using planar, but-joint, active-passive integration on...
conference paper 2017
Searched for: subject:"semiconductor"
(1 - 20 of 191)

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