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Effect of heteroepitaxial growth on LT-GaAs: ultrafast optical properties
(IOP Publishing, 2021-06-16)
Epitaxial low temperature grown GaAs (LT-GaAs) on silicon (LT-GaAs/Si) has the potential for terahertz (THz) photoconductive antenna applications. However, crystalline, optical and electrical properties of heteroepitaxial ...
Effects of mitigation of pixel crosstalk in the encoding of complex fields using the double-phase method
(Society of Photo-optical Instrumentation Engineers, 2020)
We report on unwanted effects of pixel cross-talk and its mitigation on the experimental realization
of the double-phase method with phase-only spatial light modulators. We experimentally demonstrate that a
generalized ...
On the methods of calculation of the charge collection efficiency of dye sensitized solar cells
(Royal Society of Chemistry, 2013)
The charge collection efficiency is one of the most critical parameters of photovoltaic devices. In this paper we provide the analysis and comparison between several approaches for the calculation of the collection efficiency ...
Solution-processed small molecule:fullerene bulk-heterojunction solar cells: impedance spectroscopy deduced bulk and interfacial limits to fill-factors
(Royal Society of Chemistry, 2013)
Using impedance spectroscopy, we demonstrate that the low fill factor (FF) typically observed in small molecule solar cells is due to hindered carrier transport through the active layer and hindered charge transfer through ...
Quantum Dot Based Heterostructures for Unassisted Photoelectrochemical Hydrogen Generation
(Wiley, 2013-02)
TiO2 hollow nanowires (HNWs) and nanoparticles (NPs) constitute promising architectures for QDs sensitized photoanodes for H2 generation. We sensitize these structures with CdS/CdSe quantum dots by two different methods ...
Optical Filter Based on a Spatially Patterned Kinoform Diffractive Lens
(Institute of Electrical and Electronics Engineers (IEEE), 2009)
We demonstrate a compact all-diffractive setup for spectral synthesis. The system is composed of a circularly symmetric mask attached to a kinoform diffractive lens. Following diffraction-based analysis, a Fourier transform ...
Single-molecule conformational dynamics of viroporin ion channels regulated by lipid-protein interactions
(Elsevier, 2020-02)
Classic swine fever is a highly contagious and often fatal viral disease that is caused by the classical swine fever virus (CSFV). Protein p7 of CFSV is a prototype of viroporin, a family of small, highly hydrophobic ...
Diffusion-Recombination Impedance Model for Solar Cells with Disorder and Nonlinear Recombination
(Wiley-VCH, 2013-09-23)
The diffusion–recombination model is a key tool in understanding the photovoltaic operation of solar cells. Dye-sensitized solar cells, organic solar cells, and inorganic semiconductor solar cells are systems affected by ...
The Swift Surge of Perovskite Photovoltaics
(American Chemical Society, 2013)
The breakthrough early 1990s dye sensitization of mesoscopic TiO2 films along with a regenerative iodide redox couple led to the explosive growth of dye-sensitized solar cell (DSC) research. The pioneering work of Grätzel ...
Surface Passivation of Nanoporous TiO2 via Atomic Layer Deposition of ZrO2 for Solid-State Dye-Sensitized Solar Cell Applications
(American Chemical Society, 2009)
We report here the utilization of atomic layer deposition to passivate surface trap states in mesoporous TiO2 nanoparticles for solid-state dye-sensitized solar cells based on 2,2′,7,7′-tetrakis(N,N-di-p-methoxyphenylami ...