Light-trapping schemes for silicon thin-film solar cells via super-quadratic subwavelength gratings

Chen, Ke; Wu, Rui Yuan; Zheng, Hongmei; Wang, Haishuo; Zhang, Guojun; Chen, Shun Hua

doi:10.1364/ao.58.008702

Cited by 10 publications

(4 citation statements)

References 63 publications

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“…Therefore, light passes through multiple paths of the absorbent layer, increasing the possibility of absorption. [ 101 ] Surface plasmon resonance (SPR) has been widely used to regulate the LF in PSCs. Generally, SPR occurs at the interface of metallic and non‐metallic mediums by the collective excitation of the metal surface electrons generated by the electromagnetic waves.…”

Section: Influence Of Light Fieldmentioning

confidence: 99%

Physical Fields Manipulation for High‐Performance Perovskite Photovoltaics

Zhang

Yuan

Lou

et al. 2022

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With the efforts of researchers from all over the world, metal halide perovskite solar cells (PSCs) have been booming rapidly in recent years. Generally, perovskite films are sensitive to surrounding conditions and will be changed under the action of physical fields, resulting in lattice distortion, degradation, ion migration, and so on. In this review, the progress of physical fields manipulation in PSCs, including the electric field, magnetic field, light field, stress field, and thermal field are reviewed. On this basis, the influences of these fields on PSCs are summarized and prospected. Finally, challenges and prospective research directions on how to make better use of external-fields while minimizing the unnecessary and disruptive impacts on commercial PSCs with high-efficiency and steady output are proposed.The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/smll.202107556. IntroductionRecent years, metal halide perovskite solar cells (PSCs) have attracted widespread attention, and their power conversion efficiency (PCE) has been rapidly increased by more than 25%. [1] In order to obtain highly efficient photovoltaic devices, the fabrication process, the photoelectric properties of perovskite active layer, the interface contact, the electrode conductivity, and so on are all crucial. Researchers have made a lot of attempts, such as, adding dopants into the perovskite film to assist the crystallization, [2] adjusting the chemical composition of the perovskite layer to regulate its bandgap, [3] changing the preparation processes and conditions to improve the crystal quality, [4] designing

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Section: Influence Of Light Fieldmentioning

confidence: 99%

Physical Fields Manipulation for High‐Performance Perovskite Photovoltaics

Zhang

Yuan

Lou

et al. 2022

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“…In order to increase efficiency, light trapping techniques can be used for absorption enhancement [12]. Light trapping can be done using nanostructures [13,14], metal nanoparticles [15], and also grating structures [16][17][18]. Intermediate band [19], and hot carrier extraction [20] are other quantum mechanics phenomena to promote the efficiency of SCs.…”

Section: Introductionmentioning

confidence: 99%

Absorption enhancement of Perovskite solar cells using multiple gratings

2023

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Perovskite Solar Cells have very low absorption in the near-infrared region. In this paper, in order to enhance the absorption in this region, a new technique has been presented based on multiple excitations of plasmonic modes through the gratings on the backside of the cell. Gratings on the backside of the active layer lead to absorption enhancement by exciting localized surface plasmons and light scattering, and since the resonance of surface plasmons is highly dependent on the dimensions of the gratings, the resonance wavelength can be adjusted by accurately determining the dimensions of the gratings. In order to simultaneously increase in several wavelengths, multiple gratings have been used on the backside of the cell. In using multiple gratings, the absorption in the near-infrared region has been increased many times by choosing the appropriate dimension of gratings. The highest average absorption of 68.46% has been achieved using five gratings which is a 50% increase compared to the structure without gratings. The simulation results under incident angles from 0 to 85 degrees indicate that gratings enhance light absorption up to an angle of 45 degrees. Meanwhile, the structure with five gratings degrees has an average absorption close to 70% up to an angle of ±45 degrees and is not sensitive to the incident angle. These multiple nanostructures have the ability to trap more light inside the active layer and thus promise a high-efficiency solar cell.

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“…Wu et al theoretically investigated gratings affecting the optical characteristics of a periodically chirped structure [26]. In addition, a subwavelength-structured light receiver based on the concept of metamaterials has been extensively reported [27][28][29][30][31], although practical measurements and solar cell devices are still awaited. Yu et al summarized the state of Si nanostructures applied in solar cell devices [32], yet a discussion on the geometric parameters, including the periodicity, diameter, and length that are within the subwavelength regions, is still unclear.…”

Section: Introductionmentioning

confidence: 99%

Photonic management of silicon nanocylinder arrays to enhance photovoltaic performance

Chen,

Kuo,

Wei

et al. 2023

J. Phys. D: Appl. Phys.

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Light-matter interaction of subwavelength and periodic silicon (Si) nanostructures strongly correlates with their geometrical features, which results in being highly critical for the practical development of Si-based photovoltaic applications. In this study, the effective medium concepts and retrieval method are employed to numerically unveil the photonic management of subwavelength and periodic Si nano-cylinder arrays (SiNCAs). Using finite-difference time-domain simulations, the designed SiNCAs with four various periodicities are regarded as an array of dielectric rods parallel to the incident light, and the effective optical properties such as refractive index, permittivity, permeability and impedance are investigated, where the pronounced light absorption bands centered at 485 nm and 581 nm from SiNCAs with periodicity of 300 nm are demonstrated and the origin is further elucidated with the spatial examinations of electric-field distributions. By employing the SiNCAs with tailored periodicities for the construction of hybrid solar cells, the improved cell performances featuring the conversion efficiency of 13.79% are demonstrated, where the involving photonic, optoelectronic and electrochemical measurements are employed, which deliver the effective strategy for improving the photovoltaic performances.

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Light-trapping schemes for silicon thin-film solar cells via super-quadratic subwavelength gratings

Cited by 10 publications

References 63 publications

Physical Fields Manipulation for High‐Performance Perovskite Photovoltaics

Physical Fields Manipulation for High‐Performance Perovskite Photovoltaics

Absorption enhancement of Perovskite solar cells using multiple gratings

Photonic management of silicon nanocylinder arrays to enhance photovoltaic performance

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