Results 91 to 100 of about 4,243 (238)

Production and evaluation of a-GaAs solar cells [PDF]

open access: yes, 1980
Hydrogenated alloys of a-GaAs have been prepared by rf sputtering in a mixture of argon and hydrogen at several partial pressures, substrate temperatures and rf powers. The results of a systematic investigation of the microstructural properties of these films by SEM and TEM are reported and its correlation with the deposition parameters and other ...
openaire   +2 more sources

Low‐Dimensional Materials and Van Der Waals Heterostructures for Energy Application: A Comprehensive Review

open access: yesENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
Low‐dimensional materials (0D, 1D, and 2D) exhibit unique electronic and physicochemical properties, enabling advanced nanoelectronic and optoelectronic devices. Mixed‐dimensional heterostructures combine these materials to enhance functionality.
Qaisar Alam   +3 more
wiley   +1 more source

Mechanically Stacked Triple-junction GaInP / GaAs / Si Solar Cell Simulation [PDF]

open access: yesЖурнал нано- та електронної фізики, 2014
Mechanically stacked triple-junction GaInP / GaAs / Si solar cell is simulated by Silvaco TCAD computer software and compared to more conventional GaInP / GaAs / Ge mechanically stacked configuration.
A.B. Gnilenko, S.V. Plaksin
doaj  

Two‐Dimensional Layered Oxides and the Two‐Dimensionalization of Bulk Oxides for Post‐Moore Information Devices

open access: yesInformation &Functional Materials, EarlyView.
This review systematically summarizes two‐dimensional layered and nonlayered oxides, focusing on their synthesis, properties, and post‐Moore applications in transistors, gate dielectrics, optoelectronics, and ferroelectric/magnetic devices. It also discusses challenges including scalable growth and interface engineering, along with future industrial ...
Xinjie Hou   +5 more
wiley   +1 more source

Strain Imaging of GaAs by Stimulated Raman Scattering Microscopy

open access: yesJournal of Raman Spectroscopy, EarlyView.
Telecom‐wavelength stimulated Raman scattering (SRS) microscopy is developed for high‐throughput, nondestructive characterization of gallium arsenide (GaAs). By overcoming optical absorption limits of conventional Raman systems, this technique enables precise visualization of LO phonon frequency variations (< 0.2‐cm−1$$ {}^{-1} $$ precision).
Yuki Sano, Yasuyuki Ozeki
wiley   +1 more source

Application of InAlAs/GaAs superlattice alloys to GaAs solar cells

open access: yesIEEE Conference on Photovoltaic Specialists, 2002
AlGaAs/GaAs solar cells are typically characterized as having relatively high interface recombination velocities at the heteroface. Some of the factors influencing the design of solar cell window layers are examined, and the effect of substituting InAlAs/GaAs superlattice alloys and InAlAs bulk alloys in place of AlGaAs is considered.
T.J. Drummond   +3 more
openaire   +2 more sources

Enhancing Efficiency of Two-bond Solar Cells Based on GaAs/InGaP [PDF]

open access: yesJournal of Optoelectronical Nanostructures, 2019
Multi-junction solar cells play a crucial role in the ConcentratedPhotovoltaic (CPV) Systems. Recent developments in CPV concerning high powerproduction and cost effective-ness along with better efficiency are due to theadvancements in multi-junction ...
Yagub Sefidgar   +2 more
doaj  

Discovering Shared Design Heritage for Semiconductor‐Based Gamma‐Ray Spectrometers: From CdTe to Metal Halide Perovskites

open access: yesLaser &Photonics Reviews, EarlyView.
Decades of CdTe and CdZnTe gamma‐ray spectrometer development define core design principles for room‐temperature semiconductor detectors. This Review highlights how metal halide perovskites rapidly assimilate these principles, particularly through defect and compositional engineering strategies that establish favorable spectroscopic conditions for ...
Younghak Kim   +7 more
wiley   +1 more source

Sustainable Metal Recovery From E‐Waste: Exploring Greener Leachates in Hydrometallurgical Processes

open access: yesMetalMat, EarlyView.
Recycling of electronic waste to synthesize valuable metals using green leachate. ABSTRACT The accumulation of electronic waste (e‐waste) poses environmental hazards and leads to the loss of valuable metals such as gold, silver, copper, and rare earth elements.
Shassatha Paul Saikat   +4 more
wiley   +1 more source

III–V-on-silicon solar cells reaching 33% photoconversion efficiency in two-terminal configuration [PDF]

open access: yes, 2018
International audienceSilicon dominates the photovoltaic industry but the conversion efficiency of silicon single-junction solar cells is intrinsically constrained to 29.4%, and practically limited to around 27%.
Frank Dimroth   +31 more
core   +1 more source

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