Results 41 to 50 of about 17,458 (221)
Active Invisibility Cloaks in One Dimension
, 2015 We outline a general method of constructing finite-range cloaking potentials which render a given finite-range real or complex potential $v(x)$ unidirectionally reflectionless or invisible at a wavenumber $k_0$ of our choice.
Mostafazadeh, Ali
core +2 more sources
Light Trapping Textures Designed by Electromagnetic Optimization for Sub-Wavelength Thick Solar Cells [PDF]
, 2013 Light trapping in solar cells allows for increased current and voltage, as well as reduced materials cost. It is known that in geometrical optics, a maximum 4n^2 absorption enhancement factor can be achieved by randomly texturing the surface of the solar
Ganapati, Vidya +2 more
core +1 more source
Cooled Infrared Dichroic Beamsplitters and Filters for the MIRI Spectrometer and Imager (5-29µm) [PDF]
, 2007 The spectral design and fabrication of cooled (7K) mid-infrared dichroic beamsplitters and bandpass filter coatings for the MIRI spectrometer and imager are described.
Barrett, Barbara M +2 more
core +1 more source
Advanced Materials, EarlyView.In this work, low bandgap (≈1.55 eV) semitransparent perovskite solar cells (ST‐PSCs) having thin (thickness < ≈100 nm) perovskite layers and transparent conductive oxide‐based rear electrodes are fabricated using vacuum‐deposition methods. Two different ST‐PSCs demonstrated a high light utilization efficiency value of 4.2 (PCE: 9.26% and AVT: 45.3 ...
Abhyuday Paliwal +9 more
wiley +1 more source
Effect of size and shape on reflective properties of silicon nanocone arrays
Journal of Hebei University of Science and Technology, 2018 In order to investigate the optical properties of silicon nanocone arrays with different sizes and shapes, the nanocone arrays are fabricated on silicon substrate by submicron dry etching process masked by self-assembled nano-particles.
Xiangmeng LI +4 more
doaj +1 more source
Optimised Fabry-Perot (AlGa)As quantum well lasers tunable over 105 nm [PDF]
, 1989 Uncoated, Fabry-Perot (AlGa)As semiconductor lasers are tuned over 105nm in a grating-coupled external cavity. Broadband tunability is achieved by optimising the resonator loss so as to invoke lasing from both the first and second quantised states of the
Mehuys, D. +4 more
core +1 more source
Advanced Materials, EarlyView.The energetic offset between the donor and the acceptor components in organic photoactive layers is central to the tradeoff between photovoltage and photocurrent losses. This Perspective covers the most important issues surrounding this topic in non‐fullerene acceptor blends, from the difficulty of accurately determining state energies and driving ...
Dieter Neher, Manasi Pranav
wiley +1 more source
High Power Laser Science and EngineeringA broadband, antireflective metasurface optic on a silica substrate is subjected to laser-induced damage-threshold measurements to quantify its performance under exposure to high-intensity/fluence laser pulses in the near-infrared at four pulse durations,
Kyle R. P. Kafka +5 more
doaj +1 more source
Nanomaterials, 2020 The fabrication and characterization of photoanodes based on black-Si (b-Si) are presented using a photoelectrochemical cell in NaOH solution. B-Si was fabricated by maskless dry plasma etching and was conformally coated by tens-of-nm of TiO2 using ...
Denver P. Linklater +8 more
doaj +1 more source
New high-efficiency protective coating containing glycidyl-POSS nanocage for improvement of solar cell electrical parameters [PDF]
Journal of Nanostructures, 2019 Various antireflection thin films are often used to cover glass to increase solar cell electrical parameters. In the recent years many efforts have been done to develop and improve of solar cell films with high electrical output.
Kamal Ghani +2 more
doaj +1 more source