Results 111 to 120 of about 267 (145)
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Progress in crystalline multijunction and thin-film photovoltaics
Journal of Electronic Materials, 2005Photovoltaics are important in terrestrial applications such as remote power and renewable energy but are the primary source of electrical power for space systems. For space applications, priorities are high conversion efficiency and resistance to radiation-induced degradation.
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Lateral multijunction photovoltaic cells
2017In this work, features of solar cells of lateral type were analyzed. The authors offered a design of a monolithic compact solar module with cells electrically connected in series and with a dispersion element (holographic grating). Simulation of a multistage converter was carried out.
Sachenko, A.V. +3 more
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Single and multijunction InP-based photovoltaic devices for space applications
AIP Conference Proceedings, 1995InP‐based multijunction tandem solar cells show great promise for high conversion efficiency and high radiation resistance. In this work, we present results on an InGaAs solar cell with a very high current density, 60 mA/cm2 (the highest ever reported), and an efficiency (η) of 10.2% under natural sunlight, and InP solar cell with η=18% under AM1 ...
Nasr-Eddine Medelci +5 more
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Spectrum-optimized Si-based III-V multijunction photovoltaics
SPIE Proceedings, 2012A III-V/Si metamorphic epitaxy approach to achieve multi-junction solar cells having nearly ideal optical partitioning of the solar spectrum is described. Following our previously-established methodology for the growth of defect-free GaP on Si(100) substrates and demonstrations of heteroepitaxially integrated III-V-on-Si photovoltaics via GaAs y P 1 ...
Tyler J. Grassman +6 more
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Degradation of multijunction photovoltaic gridlines induced via thermal cycling
Solar Energy Materials and Solar Cells, 2018Abstract A well-known but heretofore uncharacterized failure mechanism in multijunction photovoltaic cells involves the development of cracks in the top cell directly adjacent to metal gridline structures. In this study, we systematically explore the potential evolution of stress, grain size, roughness, and hardness of metal gridlines during thermal ...
Ryan E. Brock +3 more
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Roughness and Phase Evolution in Si1-xGex:H: Guidance for Multijunction Photovoltaics
2006 IEEE 4th World Conference on Photovoltaic Energy Conference, 2006In this study, the amorphous-phase roughening transition thickness has been determined as a function of process variables in plasma-enhanced chemical vapor deposition (PECVD) of hydrogenated amorphous silicon-germanium alloys (a-Si1-xGex:H). The process variables include the H2-dilution gas flow ratio, the alloying flow ratio, the electrode ...
N. J. Podraza +3 more
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The Segmental Approximation of Multijunction Solar Cell Photovoltaic Characteristics
2015Today, the multi-junction solar cells have high theoretical efficiency for both concentrator and space applications. In this connection accurate modeling of the multi-junction solar cell photovoltaic characteristics is necessary. The proposed approaches use the advantages which are inherent in the mono-exponential (correspondingly semi-logarithmic ...
Mintairov, M.A. +6 more
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Development of III-V on Si Multijunction Photovoltaics by Wafer Bonding
2017We report the fabrication of GaInP/AlGaAs/Si triple junction (3J) and AlGaAs/Si tandem (2J) solar cells using surface-activated wafer bonding (SAB). We observe maximum power conversion efficiency of 25.2% at 1-sun for a 3J device and 21.8% for a 2J device. The EQE analysis of the cells was carried out, which suggested that the 3J device performance was
Vauche, L. +6 more
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Lateral layered semiconductor multijunctions for novel electronic devices
Chemical Society Reviews, 2022Xiaonan Deng, Yuqi Wang, Kai Liu
exaly