Characterization of GaAs Solar Cells under Supercontinuum Long-Time Illumination

Papěž, Nikola; Dallaev, Rashid; Kaspar, Pavel; Sobola, Dinara; Škarvada, Pavel; Ţălu, Ștefan; Ramazanov, Shikhgasan; Nebojsa, Alois

doi:10.3390/ma14020461

Cited by 8 publications

(5 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Moreover, values of a were multiplied by photon energies to acquire the two forms of Tauc plots using equation (15). The direct and indirect energies were then calculated from the xaxis intercept point of the linear parts of figures 3(d) and (e) respectively.…”

Section: Resultsmentioning

confidence: 99%

See 1 more Smart Citation

Energy gap measurements based on enhanced absorption coefficient calculation from transmittance and reflectance raw data

Allaham,

Dallaev,

Burda

et al. 2024

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

The absorption coefficient plays an important role in studying and characterizing semiconducting materials. It is an important parameter to study the mechanism of photons absorption within the structure of the studied material. Thus, it helps to study the several types of charge carrier transport along with the energy band structure and its defects. In literature, a formula was reported to precisely calculate the absorption coefficient from raw data of transmittance and reflectance of electromagnetic radiation. However, the reported formula has several issues limiting its validity to be used i literature. In this paper, we provide a more mathematically accurate form of this equation to precisely obtain the absorption coefficient from the raw data, by considering the total internal reflection at the different interfaces. Moreover, the equation is tested by simulated data and is applied to study the optical characteristics of a single-component epoxy resin from its transmittance and reflectance raw data.

show abstract

Section: Resultsmentioning

confidence: 99%

“…Ocean optics JAZ-3 channels spectrometer was used to obtain T and R. The instrument is supplied with a halogen VIS/NIR source along with halogen-deuterium extension for UV, and the tested wavelength range was 200-1000 nm [15,16].…”

Section: Methodsmentioning

confidence: 99%

Energy gap measurements based on enhanced absorption coefficient calculation from transmittance and reflectance raw data

Allaham,

Dallaev,

Burda

et al. 2024

Phys. Scr.

Self Cite

View full text Add to dashboard Cite

show abstract

“…An extensive study using several methods on a single-junction GaAs cell was conducted by Papež et al, which dealt with the degradation of GaAs cells over the past few years. Degradation after thermal processing [ 70 , 71 ], after cooling [ 6 ], after exposure to gamma radiation [ 50 , 72 ], and after exposure to broadband radiation was studied [ 73 ]. An unstressed sample was also observed, and defects and contamination after fabrication were examined [ 74 ].…”

Section: Stability and Degradation Of Structuresmentioning

confidence: 99%

“…The performance of the PV cell was also examined in real-time during the measurement of the sample. Interestingly, the degradation was not linear—there was a slight increase in efficiency at 42 days of irradiation in Figure 11 , which could be due to the appearance of deep donor level centers (DX centers) [ 73 ]. The exact values from the measurement corresponding to Figure 11 are also added in Table 3 .…”

Section: Stability and Degradation Of Structuresmentioning

confidence: 99%

Overview of the Current State of Gallium Arsenide-Based Solar Cells

et al. 2021

Self Cite

View full text Add to dashboard Cite

As widely-available silicon solar cells, the development of GaAs-based solar cells has been ongoing for many years. Although cells on the gallium arsenide basis today achieve the highest efficiency of all, they are not very widespread. They have particular specifications that make them attractive, especially for certain areas. Thanks to their durability under challenging conditions, it is possible to operate them in places where other solar cells have already undergone significant degradation. This review summarizes past, present, and future uses of GaAs photovoltaic cells. It examines advances in their development, performance, and various current implementations and modifications.

show abstract

“…All the values of the recorded graphs were calibrated according to the C-C binding reference value (284.8 eV). The plotted spectra already represent a fitting of the measured data [33].…”

Section: X-ray Photoelectron Spectroscopy (Xps)mentioning

confidence: 99%

Structure Tuning and Electrical Properties of Mixed PVDF and Nylon Nanofibers

et al. 2021

Self Cite

View full text Add to dashboard Cite

The paper specifies the electrostatic spinning process of specific polymeric materials, such as polyvinylidene fluoride (PVDF), polyamide-6 (PA6, Nylon-6) and their combination PVDF/PA6. By combining nanofibers from two different materials during the spinning process, new structures with different mechanical, chemical, and physical properties can be created. The materials and their combinations were subjected to several measurements: scanning electron microscopy (SEM) to capture topography; contact angle of the liquid wettability on the sample surface to observe hydrophobicity and hydrophilicity; crystallization events were determined by differential scanning calorimetry (DSC); X-ray photoelectron spectroscopy (XPS), Raman spectroscopy, and Fourier-transform infrared spectroscopy (FT-IR) to describe properties and their changes at the chemical level. Furthermore, for the electrical properties of the sample, the dielectric characteristics and the piezoelectric coefficient were measured. The advantage of the addition of co-polymers was to control the properties of PVDF samples and understand the reasons for the changed functionality. The innovation point of this work is the complex analysis of PVDF modification caused by mixing with nylon PA6. Here we emphasize that the application of nylon during the spin influences the properties and structure (polarization, crystallization) of PVDF.

show abstract

Characterization of GaAs Solar Cells under Supercontinuum Long-Time Illumination

Cited by 8 publications

References 32 publications

Energy gap measurements based on enhanced absorption coefficient calculation from transmittance and reflectance raw data

Energy gap measurements based on enhanced absorption coefficient calculation from transmittance and reflectance raw data

Overview of the Current State of Gallium Arsenide-Based Solar Cells

Structure Tuning and Electrical Properties of Mixed PVDF and Nylon Nanofibers

Contact Info

Product

Resources

About