Progress in the development of metamorphic multi‐junction III–V space solar cells

Sinharoy, S.; Patton, Martin O.; Valko, Thomas M.; Weizer, Victor G.

doi:10.1002/pip.449

Cited by 16 publications

(4 citation statements)

References 3 publications

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“…Another approach of solving current matching issue in multijunction solar cell is the metamorphic growth method, which involves applying a compositionally graded buffer (CGB) layer between the lattice mismatched subcells [74]. The main purpose of using a CGB layer is to distribute the strain relaxation layers into a lattice constants gradually changed thick buffer layer instead of growing a highly lattice mismatched layer onto its under layer [75].…”

Section: Inverted Metamorphic and Upright Metamorphic Solar Cellsmentioning

confidence: 99%

A Brief Review of High Efficiency III-V Solar Cells for Space Application

Aierken

Liu

et al. 2021

Front. Phys.

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The demands for space solar cells are continuously increasing with the rapid development of space technologies and complex space missions. The space solar cells are facing more critical challenges than before: higher conversion efficiency and better radiation resistance. Being the main power supply in spacecrafts, III-V multijunction solar cells are the main focus for space application nowadays due to their high efficiency and super radiation resistance. In multijunction solar cell structure, the key to obtaining high crystal quality and increase cell efficiency is satisfying the lattice matching and bandgap matching conditions. New materials and new structures of high efficiency multijunction solar cell structures are continuously coming out with low-cost, lightweight, flexible, and high power-to-mass ratio features in recent years. In addition to the efficiency and other properties, radiation resistance is another sole criterion for space solar cells, therefore the radiation effects of solar cells and the radiation damage mechanism have both been widely studied fields for space solar cells over the last few decades. This review briefly summarized the research progress of III-V multijunction solar cells in recent years. Different types of cell structures, research results and radiation effects of these solar cell structures under different irradiation conditions are presented. Two main solar cell radiation damage evaluation models—the equivalent fluence method and displacement damage dose method—are introduced.

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Section: Inverted Metamorphic and Upright Metamorphic Solar Cellsmentioning

confidence: 99%

A Brief Review of High Efficiency III-V Solar Cells for Space Application

Aierken

Liu

et al. 2021

Front. Phys.

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“…Graded composition buffers [8][9][10] have been employed to reduce the TDDs. Growth of highly mismatched materials (greater than 2% lattice mismatch) typically results in a threaded dislocation density (TDD) of greater than 10 7 -10 8 cm Ϫ2 .…”

Section: Multijunction Solar Cellsmentioning

confidence: 99%

Progress in crystalline multijunction and thin-film photovoltaics

Senft

2005

Journal of Elec Materi

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Photovoltaics 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. The emphasis is on III-V multijunction solar cells and comparatively lower efficiency but flexible, lightweight thin-film solar cells. Triple-junction III-V solar cells have reached conversion efficiencies of 30% at air mass zero (AM0). New lattice mismatch techniques and nitride materials hold promise for further efficiency increases. Thin-film solar cells generally have less than 15% efficiency but greater radiation resistance, lower cost, and lower mass.

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“…Various types of solar cells have been recently developed, such as silicon‐based (crystalline, amorphous, and microcrystalline), GaAs‐based (GaAs, GaAs/GaInP, Ge/GaAs/GaInP), organic, and copper indium gallium selenide (CIGS) cells . GaAs‐based solar cells are predominantly used for solar power generation in the space due to their excellent conversion efficiency and long‐term stability .…”

Section: Introductionmentioning

confidence: 99%

InGaP/GaAs/Ge triple‐junction solar cells with ZnO nanowires

Hou

Chang

Hsueh³

et al. 2012

Progress in Photovoltaics

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ZnO nanowire (NW) grown on triple-junction (TJ) solar cells via the hydrothermal growth method to enhance efficiency is investigated. In this paper, experimental results indicate that TJ solar cells with ZnO NW as an antireflection (AR) coating have the lowest reflectance in the short wavelength spectrum, as compared with those of bare TJ solar cells (without AR coating) and solar cells with SiN x and TiO 2 /Al 2 O 3 AR coatings. ZnO NW has the lowest light reflection among all experimental samples, especially in the range of ultraviolet to green light (300-500 nm). It was found that ZnO NW could enhance the conversion efficiency by 6.92%, as compared with the conventional TJ solar cell. In contrast, SiN x and TiO 2 /Al 2 O 3 AR coatings could only enhance the conversion efficiency by 3.72% and 6.46% increase, respectively. The encapsulated results also suggested that the cell with ZnO NW coating could provide the best solar cell performances. Furthermore, all samples are measured at tilt angles of 0 -90 and results show that the solar cells with ZnO NW have the highest efficiency at all tilt angles. Furthermore, a small NW diameter increases light absorption.

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Progress in the development of metamorphic multi‐junction III–V space solar cells

Cited by 16 publications

References 3 publications

A Brief Review of High Efficiency III-V Solar Cells for Space Application

A Brief Review of High Efficiency III-V Solar Cells for Space Application

Progress in crystalline multijunction and thin-film photovoltaics

InGaP/GaAs/Ge triple‐junction solar cells with ZnO nanowires

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