Optimizing 1D Photonic Crystal Structures for Thin Film Solar Cells

Abdellatif, Sameh O.; Alsayed, Gehad Ali

doi:10.1109/cpere45374.2019.8980046

Cited by 4 publications

(4 citation statements)

References 21 publications

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“…Accordingly, sufficient photon capturing cannot be ensured from the first optical path. Adding a back reflector facilitates the probability of photon capturing by elongating the optical path length. , …”

Section: Results and Discussionmentioning

confidence: 99%

“…Adding a back reflector facilitates the probability of photon capturing by elongating the optical path length. 58,59 Herein, we utilized our UV−vis−NIR spectrometer to measure the reflected beam intensity across various LIG samples, referring to the commercial FTO electrode as a bare electrode. Consequently, the extinction optical behavior is calculated using eq 1 (cf.…”

Section: Optical Characterizationmentioning

confidence: 99%

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Optoelectronic and Morphological Surface Resistance Evaluation of Laser-Induced Graphene Counter Electrodes for Potential Applications in Cesium Lead Halide Perovskite Solar Cells

Abdellatif,

Ghannam,

Khalifa

2024

ACS Appl. Electron. Mater.

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This study investigates the physicochemical, optical, and electrical characterization of laser-induced graphene (LIG) samples for integration as counter electrodes in cesium lead halide perovskite solar cells. The impact of laser processing parameters on electrode performance is explored, including laser power, laser speed, and beam defocus. Density functional theory (DFT) computational modeling is employed for atomistic investigation and work function estimation, demonstrating the density of states (DOS), quantum capacitance of the graphene sheets, and energy work function. NiO is utilized as a hole transport layer, and the energy work function of LIG is tuned accordingly. SEM measurements estimate thin film porosity, and optical testing assesses back reflection capabilities in terms of backward scattering. The surface resistance of various samples is tested using a scanning four-probe station concerning FTOcoated glass. A figure of merit is introduced to evaluate the backward scattering due to the porous medium. The macroscopic trade-off between the counter electrode's role as a back reflector and the losses due to surface resistance is addressed. Ultimately, a full perovskite solar cell was constructed, incorporating LIG as a counter electrode, achieving an overall efficiency of 12.52%.

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Section: Results and Discussionmentioning

confidence: 99%

Section: Optical Characterizationmentioning

confidence: 99%

Optoelectronic and Morphological Surface Resistance Evaluation of Laser-Induced Graphene Counter Electrodes for Potential Applications in Cesium Lead Halide Perovskite Solar Cells

Abdellatif,

Ghannam,

Khalifa

2024

ACS Appl. Electron. Mater.

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“…This paper is an extension of the work originally presented at the IEEE Conference on Power Electronics and Renewable Energy (CPERE) in 2019 [1].…”

Section: Introductionmentioning

confidence: 99%

“…The light trapping structures can be divided into two main classifications, either by function or composition of the structure. The composition of the light trapping structure can be in the form of photonic crystal (PCs) [18] or plasmonics structures [1,16,17,[19][20][21][22][23]. The fabrication of PCs structures depends on the contrast between dielectric materials and semiconductor materials (refractive index contrast) which influences the optical properties of the structure [24].…”

Section: Introductionmentioning

confidence: 99%

Investigating the Optical Behavior of Single/Multi-Dimensional Photonic Crystal Structures for Photovoltaic Applications

Alsayed¹,

Ismail²,

Abdellatif³

2020

Adv. sci. technol. eng. syst. j.

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The results investigated in this work are toward the optimization of the photonic crystal structures in 1D and 2D scale. One-dimensional distributed Bragg reflectors (DBRs) have demonstrated substantial potential in various optoelectronic applications, due to the observed tunable optical band-gap. Herein, the use of DBRs in light trapping solar cells was simulated and validated, representing its effect as a back reflector structure. In terms of the layer thickness, material selection and number of layer, the optimized DBR structure was modeled and evaluated with respect to previously published numerical and experimental data. The proposed model is capable of designing photonic crystal structures with tunable band-gap varies from 400 nm to 700 nm while controlling the pass-band in both Visible and Near Infra-red regions. On the other hand, 2D grating structure has been simulated where the transmission spectra under various design dimensions have been investigated. Finally, thin film deposition is utilized for experimental validation to our proposed optical model.

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The reflectivity of 1D+2D PC back reflector in thin-film solar cell

Zhan

Cai

2022

J Opt

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Optimizing 1D Photonic Crystal Structures for Thin Film Solar Cells

Cited by 4 publications

References 21 publications

Optoelectronic and Morphological Surface Resistance Evaluation of Laser-Induced Graphene Counter Electrodes for Potential Applications in Cesium Lead Halide Perovskite Solar Cells

Optoelectronic and Morphological Surface Resistance Evaluation of Laser-Induced Graphene Counter Electrodes for Potential Applications in Cesium Lead Halide Perovskite Solar Cells

Investigating the Optical Behavior of Single/Multi-Dimensional Photonic Crystal Structures for Photovoltaic Applications

The reflectivity of 1D+2D PC back reflector in thin-film solar cell

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