Moth eye antireflection coated GaInP/GaAs/GaInNAs solar cell

Aho, Arto; Tommila, J.; Tukiainen, Antti; Polojärvi, Ville; Niemi, Tapio; Guina, Mircea

doi:10.1063/1.4897022

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…Based on this bionic principle, there are many metamaterial designs that mimic the moth-eye structure, such as visible light absorbers with nano moth-eye structure 46 and graphene-based moth-eye structure solar cells. 47 The design of metamaterials with a moth-eye-like structure covers many aspects, such as visible light stealth, infrared stealth and radar stealth. Most of them use the method of building a honeycomb hexagonal plane or gradient surface to realize the multiple refraction of waves on its surface.…”

Section: Structure Design and Mechanism Research Of Bionic Materialsmentioning

confidence: 99%

Bionic structures for optimizing the design of stealth materials

Xu¹,

Li²,

Li³

et al. 2023

Phys. Chem. Chem. Phys.

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Section: Structure Design and Mechanism Research Of Bionic Materialsmentioning

confidence: 99%

Bionic structures for optimizing the design of stealth materials

Xu¹,

Li²,

Li³

et al. 2023

Phys. Chem. Chem. Phys.

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“…The planar double-layer coating had the nominal structure of 50 nm TiO 2 /89 nm SiO 2 . The planar ARC has originally been optimized for the GaInP/GaAs/GaInNAsSb triple-junction MJSC, 28 so that the top-junction (GaInP) would not be the current-limiting junction. It exhibits relatively broadband low reflectivity at 400–1000 nm and with the given materials represents a robust and realistic optimal double-layer ARC for these III–V MJSCs.…”

Section: Experimental Sectionmentioning

confidence: 99%

Optical Performance Assessment of Nanostructured Alumina Multilayer Antireflective Coatings Used in III–V Multijunction Solar Cells

Reuna

Hietalahti

Aho

et al. 2022

ACS Appl. Energy Mater.

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The optical performance of a multilayer antireflective coating incorporating lithography-free nanostructured alumina is assessed. To this end, the performance of single-junction GaInP solar cells and four-junction GaInP/GaAs/GaInNAsSb/GaInNAsSb multijunction solar cells incorporating the nanostructured alumina is compared against the performance of similar solar cells using conventional double-layer antireflective coating. External quantum efficiency measurements for GaInP solar cells with the nanostructured coating demonstrate angle-independent operation, showing only a marginal difference at 60° incident angle. The average reflectance of the nanostructured antireflective coating is ∼3 percentage points smaller than the reflectance of the double-layer antireflective coating within the operation bandwidth of the GaInP solar cell (280–710 nm), which is equivalent of ∼0.2 mA/cm 2 higher current density at AM1.5D (1000 W/m 2 ). When used in conjunction with the four-junction solar cell, the nanostructured coating provides ∼0.8 percentage points lower average reflectance over the operation bandwidth from 280 to 1380 nm. However, it is noted that only the reflectance of the bottom GaInNAsSb junction is improved in comparison to the planar coating. In this respect, since in such solar cells the bottom junction typically is limiting the operation, the nanostructured coating would enable increasing the current density ∼0.6 mA/cm 2 in comparison to the standard two-layer coating. The light-biased current–voltage measurements show that the fabrication process for the nanostructured coating does not induce notable recombination or loss mechanisms compared to the established deposition methods. Angle-dependent external quantum efficiency measurements incline that the nanostructured coating excels in oblique angles, and due to low reflectance at a 1000–1800 nm wavelength range, it is very promising for next-generation broadband multijunction solar cells with four or more junctions.

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“…TiAu and NiAu alloys were used for p-and n-side contacts, respectively. For anti-reflection coating, we used a double-layer TiOx/SiOx thin film [6]. For the measurements, we used a spectrally adjustable inhouse built three-band solar simulator, which was set to AM0 spectral conditions with separately calibrated single junction GaInP, GaAs and GaInNAsSb cells.…”

Section: Methodsmentioning

confidence: 99%

Performace of Dilute Nitride Triple Junction Space Solar Cell Grown by MBE

et al. 2017

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Dilute nitride arsenide antimonide compounds offer widely tailorable band-gaps, ranging from 0.8 eV to 1.4 eV, for the development of lattice-matched multijunction solar cells with three or more junctions. Here we report on the performance of GaInP/GaAs/GaInNAsSb solar cell grown by molecular beam epitaxy. An efficiency of 27% under AM0 conditions is demonstrated. In addition, the cell was measured at different temperatures. The short circuit current density exhibited a temperature coefficient of 0.006 mA/cm 2 /°C while the corresponding slope for the open circuit voltage was -6.8 mV/°C. Further efficiency improvement, up to 32%, is projected by better current balancing and structural optimization.

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Moth eye antireflection coated GaInP/GaAs/GaInNAs solar cell

Cited by 5 publications

References 11 publications

Bionic structures for optimizing the design of stealth materials

Bionic structures for optimizing the design of stealth materials

Optical Performance Assessment of Nanostructured Alumina Multilayer Antireflective Coatings Used in III–V Multijunction Solar Cells

Performace of Dilute Nitride Triple Junction Space Solar Cell Grown by MBE

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