Results 71 to 80 of about 714 (176)
Transition Metal Dichalcogenide Multijunction Solar Cells Toward the Multicolor Limit
Solar RRL, Volume 10, Issue 13, 15 July 2026.A thermodynamic design framework reveals how transfer‐printable TMD multijunction solar cells approach the multicolor limit. Within the 1.0–2.1 eV TMD bandgap window, a five‐junction ladder nears the efficiency plateau, while radiative efficiency, luminescent coupling, excitonic absorption, and bottom‐cell stability set the practical headroom for van ...
Seungwoo Lee
wiley +1 more source
Effective Potential from the Generalized Time-Dependent Schrödinger Equation
Mathematics, 2016 We analyze the generalized time-dependent Schrödinger equation for the force free case, as a generalization, for example, of the standard time-dependent Schrödinger equation, time fractional Schrödinger equation, distributed order time fractional ...
Trifce Sandev +2 more
doaj +1 more source
Beilstein Journal of Nanotechnology, 2015 Here, we demonstrate a bias-driven superluminescent point light-source based on an optically pumped molecular junction (gold substrate/self-assembled molecular monolayer/gold tip) of a scanning tunneling microscope, operating at ambient conditions and ...
Kai Braun +7 more
doaj +1 more source
Design Considerations of Structural Parameters in Resonant Tunneling Diode by None-Equilibrium Green Function Method [PDF]
Журнал нано- та електронної фізики, 2015 This paper presents the effects of structural parameters like Quantum well width, barrier width, spacer width, contact width and contact doping, on performance of Resonant Tunneling Diode using full quantum simulation.
M. Charmi, M.H. Yousefi
doaj
InGaAs/AlAs Resonant Tunneling Diodes for THz Applications: An Experimental Investigation
IEEE Journal of the Electron Devices Society, 2018 This paper presents an experimental study of InGaAs/AlAs resonant tunneling diodes designed to improve the diode characteristics using five different device structures.
Saad G. Muttlak +4 more
doaj +1 more source
AIP Advances, 2017 The temperature dependences of output power, oscillation frequency, and current-voltage curve are measured for resonant-tunneling-diode terahertz (THz) oscillators. The output power largely changes with temperature owing to the change in Ohmic loss.
M. Asada, S. Suzuki, T. Fukuma
doaj +1 more source
Design of Voltage control Oscillator using Nonlinear Composite Right/Left-Handed Transmission Line
Advanced Electromagnetics, 2016 In the present work, we propose a voltage control oscillator (VCO) at high frequency consists of nonlinear composite right/left-handed transmission line (CRLH-TL) loaded with Resonant Tunneling Diode (RTD).
H. J. El-Khozondar +4 more
doaj +1 more source
Terahertz resonant-tunneling-diode oscillator with two offset-fed slot-ring antennas
Applied Physics ExpressWe proposed and fabricated a terahertz resonant-tunneling-diode oscillator integrated with two offset slot-ring antennas for high-output power and high-directivity radiation. In this device, the length of the antenna, approximately half the wavelength of
Shoei Endo, Safumi Suzuki
doaj +1 more source
Applied Physics ExpressTerahertz continuous-wave sources have been rapidly developed to cover the terahertz gap. However, integrating metasurface-based optical elements with sources remains limited due to the challenges of simultaneously designing multiple optical properties ...
Yuki Saito +3 more
doaj +1 more source
Applied Physics ExpressTerahertz flat optics based on metasurfaces can replace massive optical components with optically thin components. However, metasurfaces with unprecedented material properties frequently produce a specified function, and terahertz flat optics has yet to ...
Takehito Suzuki +5 more
doaj +1 more source