Results 41 to 50 of about 138,462 (342)

Band Alignment in In‐Oxo Metal Porphyrin SURMOF Heterojunctions

Advanced Functional Materials, EarlyView.
Porphyrin core metalation in indium‑oxo SURMOFs enables systematic tuning of band edge positions without altering the crystal structure. First‑principles calculations reveal type‑I and type‑II heterostructures as well as multi‑junction energy cascades, establishing a modular strategy for exciton funneling and charge separation in optoelectronic ...
Puja Singhvi, Nina Vankova, Thomas Heine
wiley   +1 more source

Purcell-enhanced single photons at telecom wavelengths from a quantum dot in a photonic crystal cavity

Scientific Reports
Quantum dots are promising candidates for telecom single photon sources due to their tunable emission across the different low-loss telecommunications bands, making them compatible with existing fiber networks.
Catherine L. Phillips, Alistair J. Brash, Max Godsland, Nicholas J. Martin, Andrew Foster, Anna Tomlinson, René Dost, Nasser Babazadeh, Elisa M. Sala, Luke Wilson, Jon Heffernan, Maurice S. Skolnick, A. Mark Fox   +12 more
doaj   +1 more source

Improvement Performance of p-GaN Gate High-Electron-Mobility Transistors with GaN/AlN/AlGaN Barrier Structure

Micromachines
This study demonstrates a particular composited barrier structure of high-electron-mobility transistors (HEMTs) with an enhancement mode composed of p-GaN/GaN/AlN/AlGaN/GaN. The purpose of the composite barrier structure device is to increase the maximum
An-Chen Liu, Yu-Wen Huang, Hsin-Chu Chen, Hao-Chung Kuo   +3 more
doaj   +1 more source

Optimization of the concentration's distribution of the carriers on thickness of epitaxial layers [PDF]

Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2007
A plunger device for liquid epitaxy of АIIIВV semiconductor compositions has been modified. It has been shown that the impurity concentration gradient, creating inner electrical fields in the photodetecting and active regions of semiconductor structures,
Karimov A. V., Yodgorova D. M., Giyasova F. A., Saidova R. A., Haydarov Sh. A.   +4 more
doaj  

AlGaInN laser diode technology for GHz high-speed visible light communication through plastic optical fiber and water [PDF]

, 2016
AlGaInN ridge waveguide laser diodes are fabricated to achieve single-mode operation with optical powers up to 100 mW at ∼420  nm∼420  nm for visible free-space, underwater, and plastic optical fiber communication.
Czernecki, Robert, Kelly, Antony E., Kucharski, Robert, Leszczynski, Mike, Marona, Lucja, Najda, Stephen P., Perlin, Piotr, Suski, Tadek, Targowski, Grzegorz, Watson, Malcolm A., Watson, Scott, White, Henry, Wisniewski, Przemek   +12 more
core   +1 more source

On‐Surface Indigo‐Based Bimolecular Coordination Networks with Programmable Regular or Vitreous Structure

Advanced Functional Materials, EarlyView.
A previously unreported coordination motif stabilising single Fe atoms by indigo chelation and pyridyl coordination on Au(111) has been revealed. By using planar tritopic pyridyl linkers (TPyB), extended 2D porous networks of indigo3(TPyB)2Fe6 form. These networks can be crystalline or vitreous and offer an environment where individual coordination ...
Hongxiang Xu, Ritam Chakraborty, Biao Yang, Dennis Meier, Joachim Reichert, Svetlana Klyatskaya, Mario Ruben, Shobhana Narasimhan, Johannes V. Barth, Anthoula C. Papageorgiou   +9 more
wiley   +1 more source

Effect of epitaxy on interband transitions in ferroelectric KNbO3

New Journal of Physics, 2015
Very large lattice strain and strain-induced polarization are achieved in KNbO _3 using epitaxial growth of a thin KNbO _3 film onto a (001)-oriented SrTiO _3 single-crystal substrate.
M Tyunina, L D Yao, D Chvostova, T Kocourek, M Jelinek, A Dejneka, S van Dijken   +6 more
doaj   +1 more source

Ferromagnetism in (In,Mn)As Diluted Magnetic Semiconductor Thin Films Grown by Metalorganic Vapor Phase Epitaxy

, 2002
In1-xMnxAs diluted magnetic semiconductor (DMS) thin films have been grown using metalorganic vapor phase epitaxy (MOVPE). Tricarbonyl(methylcyclopentadienyl)manganese was used as the Mn source.
A. J. Blattner, B. W. Wessels, Bean, Blattner, Chernenko, De Boeck, Dietl, Dietl, Haneda, Munekata, Ohno, Ohno, Ohno, Overberg, Pytlik, Reed, Soo, Soo, van Schilfgaarde, von Molnar   +19 more
core   +1 more source

In situ real-time analysis of alloy film composition and segregation dynamics with parallel detection reflection electron energy loss spectroscopy [PDF]

, 1997
Real-time measurements of GexSi1 – x/Si(001) composition and segregation dynamics in Sn/Si(001) in molecular beam epitaxy are demonstrated using parallel detection reflection electron energy loss spectroscopy.
Ahn, C. C., Atwater, H. A., He, G., Tambo, T., Taylor, M. E., Wong, S. S., Yoshino, H.   +6 more
core   +1 more source

MOFs and COFs in Electronics: Bridging the Gap between Intrinsic Properties and Measured Performance

Advanced Functional Materials, EarlyView.
Metal‐organic frameworks (MOFs) and covalent organic frameworks (COFs) hold promise for advanced electronics. However, discrepancies in reported electrical conductivities highlight the importance of measurement methodologies. This review explores intrinsic charge transport mechanisms and extrinsic factors influencing performance, and critically ...
Jonas F. Pöhls, R. Thomas Weitz
wiley   +1 more source