Design of an intermediate Bragg reflector within triple-junction solar cells for spectrum splitting applications

Jiang, Yajie; Keevers, Mark J.; Pearce, Phoebe; Ekins-Daukes, N. J.; Green, Martin A.

doi:10.1016/j.solmat.2019.01.011

Cited by 14 publications

(7 citation statements)

References 29 publications

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“…The relevant data above are also listed in Table S1. There is an abnormal reflection peak at 900 nm, which is caused by the AlGaAs/GaAs Bragg reflectors between the middle and bottom-cells [15][16][17][18] . The digital photograph in Fig.…”

Section: Resultsmentioning

confidence: 99%

Enhanced light absorption using inverted triangular grooved cover glasses for triple-junction GaAs solar cell modules

Liu,

Qian,

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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Triple-junction GaAs solar cells are ideal for space energy applications, owing to its high efficiency, strong radiation resistance, and good high/low temperature performance, etc. Strategies such as lattice match, bandgap match, antireflective coating and electrode design, have been extensively studied to improve the solar cell performances. Considering the system level of the photovoltaic module, V-grooves on the cover glass were proposed to reduce the reflected light power caused by the metal gridlines. Based on the light refraction, the incident light will be guided by the V-grooves to bypass the gridlines and reach the absorb region of the solar cell. The V-grooves are fabricated by femtosecond laser scribing method with an optical alignment system. As a result, the efficiency of the solar cell module is increased from 29.01% to 29.3%. The V-grooved cover glass does not introduce heterogeneous materials such as silicone, oxides, etc., and therefore maintains good irradiation resistance and mechanical strength for space applications. triple-junction GaAs solar cells, metal gridline, femtosecond laser, V-groove, anti-reflective

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Section: Resultsmentioning

confidence: 99%

Enhanced light absorption using inverted triangular grooved cover glasses for triple-junction GaAs solar cell modules

Liu,

Qian,

et al. 2024

Advanced Fiber Laser Conference (AFL2023)

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“…There are also theoretical studies that predict the performance enhancement of silicon-based tandem cells as well as triplejunction solar cells when they are combined with DBRs. [8,47,71] Below we see some more examples.…”

Section: Photovoltaic Devicesmentioning

confidence: 99%

“…Recent advances in materials and coating processes have resulted in solution-based DBRs with a remarkable performance which is on par with traditional physical/chemical vapor phase deposition. This has resulted in many interesting DBR applications namely light emission control, [4][5][6] improving the performance of photovoltaics, [7][8][9][10] colorchanging sensors [11][12][13] and recently in catalysis. [14] While DBRs have attractive properties, it is very important to use them only in relevant applications and be cautious when reporting performance…”

mentioning

confidence: 99%

Prospects in Broadening the Application of Planar Solution‐Based Distributed Bragg Reflectors

Palo

Daskalakis

2023

Adv Materials Inter

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simple structure and selective and tuneable reflectivity spectrum, DBRs could be an attractive solution to applications that rely on or benefit from light control. However, high optical-quality DBRs are generally fabricated by physical vapor deposition methods [2,3] which are resourcedemanding and complex. DBR's use has been primarily restricted in laser research, thus blocking their widespread use.Liquid film deposition methods have the potential to circumvent the DBRs' fabrication issues. Recent advances in materials and coating processes have resulted in solution-based DBRs with a remarkable performance which is on par with traditional physical/chemical vapor phase deposition. This has resulted in many interesting DBR applications namely light emission control, [4][5][6] improving the performance of photovoltaics, [7][8][9][10] colorchanging sensors [11][12][13] and recently in catalysis. [14] While DBRs have attractive properties, it is very important to use them only in relevant applications and be cautious when reporting performance

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“…The reflectance of the DBR structure increased with increase of both Al fraction and period number. However, the reflectance peak of the DBR structure was red‐shifted for a high Al fraction 19 . When the Al fraction was 0.8, the DBR structure had a high reflectance and the reflectance peak wavelength was located at 860 nm and the absorption spectrum of the Ge bottom subcell was unaffected.…”

Section: Simulation and Experimentsmentioning

confidence: 99%

“…However, the reflectance peak of the DBR structure was red-shifted for a high Al fraction. 19 When the Al fraction was 0.8, the DBR structure had a high reflectance and the reflectance peak wavelength was located at 860 nm and the absorption spectrum of the Ge bottom subcell was unaffected. Figure 2B shows the change in the reflectance of the DBR structure with an increasing period number of the DBR layers for a fixed Al fraction, that is, GaAs/Al 0.8 Ga 0.2 As DBR.…”

Section: Simulation and Experimentsmentioning

confidence: 99%

Investigation of degradation characteristics of electron irradiated GaInP/InGaAs/Ge solar cell by numerical simulation model

Zhang

Aierken

Zhuang

et al. 2022

Intl J of Energy Research

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Summary The degradation characteristics of lattice‐matched (LM) GaInP/InGaAs/Ge solar cell under 1 MeV electron irradiation are numerically simulated using APSYS finite element analysis software and Essential Macleod Program. Main output parameters of solar cells are simulated based on the material energy band, minority carrier lifetime, and interface surface recombination velocity. The results show that the adverse effects of the displacement damages in solar cell materials induced by irradiation are the primary reasons for overall cell performance degradation. The minority carrier lifetime degraded mostly in InGaAs middle subcell after irradiation, and it became to the current‐limiting unit in the end‐of‐life condition. The simulation results of the current‐voltage curves and the external quantum efficiency spectra are well agreed with the irradiation experimental data under similar conditions. Furthermore, an approach to radiation hardening of LM GaInP/InGaAs/Ge solar cell by adjusting the base and emitter layer thickness in the InGaAs middle subcell is proposed based on this model.

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Design of an intermediate Bragg reflector within triple-junction solar cells for spectrum splitting applications

Cited by 14 publications

References 29 publications

Enhanced light absorption using inverted triangular grooved cover glasses for triple-junction GaAs solar cell modules

Enhanced light absorption using inverted triangular grooved cover glasses for triple-junction GaAs solar cell modules

Prospects in Broadening the Application of Planar Solution‐Based Distributed Bragg Reflectors

Investigation of degradation characteristics of electron irradiated GaInP/InGaAs/Ge solar cell by numerical simulation model

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