Back reflector coating using a photonic crystal for highly efficient solar cells using a new metamaterial with the most extreme positive index of refraction

Taya, Sofyan A.; AbuIbaid, Sahar M.; Alhamss, Dana N.; Patel, Shobhit K.; Çolak, İlhami; Almawgani, Abdulkarem H. M.

doi:10.1007/s12648-022-02403-2

Cited by 2 publications

(1 citation statement)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These PCs are periodic structures made of two dielectric media having a larger refractive index contrast as compared to other optical components, thus enabling photonic bandgaps (PBGs) as prohibited frequency/ wavelength bands that are similar to the energy bands obtained in the case of electronic waves through periodic potential of ions in the solid crystal [5]. PCs are generally made of dielectric media, but other materials like metals, chalcogenide, semiconductors and gyroidal graphene were also introduced in place of dielectrics as reported by several workers [6][7][8][9][10][11][12][13]. With the introduction of new dispersive and smart materials like plasma, magnetized cold plasma, graphene, superconductor, liquid crystal and metamaterial, the field of PC research finds applications in diverse fields of science and technology [14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Analysis of a gas sensor based on one-dimensional photonic crystal structure with a designed defect cavity

et al. 2023

View full text Add to dashboard Cite

A symmetric one-dimensional photonic crystal configuration with defect layer is proposed for an optical gas sensor based device application. Here, Silicon and Si3N4 are considered as materials of dielectric layers with zero value of extinction coefficient in the wavelength range of concern. The transmission of PC configuration is estimated using the transfer matrix approach in case of configuration with and without defect, and the infiltrated gas is treated as defect layer. On the basis of the defect mode’s wavelength, gas can be determined. In addition, quality factor and sensitivity of the device are improved due to the variation of refractive index of layer B, thickness of defect, angle of incidence and the number of unit cells on either side of defect layer. By making analysis of the effect of these parameters on the sensitivity and quality factor, interesting results have been obtained and conclusions drawn. We have also proposed and investigated a symmetric structure with defect made with a single material to improve optical sensing parameters. Further for the sake of comparison, the various gases are used to show improved sensing characteristics for respective gases, which can be used to determine gas. It is inferred that such refractive index optical sensor based on defect mode position is highly sensitive and offers precise optical sensing characteristics and possibly find applications in gas detection.

show abstract

Section: Introductionmentioning

confidence: 99%

Analysis of a gas sensor based on one-dimensional photonic crystal structure with a designed defect cavity

et al. 2023

View full text Add to dashboard Cite

show abstract

Non-uniform Al₂O₃ back reflector for performance enhancement of thin rear passivated silicon solar cells

Banerjee,

Mukhopadhyay,

Hossain

2024

Phys. Scr.

View full text Add to dashboard Cite

Low material usage, physical flexibility, portability, and lightweight applications are some of the major advantages that have claimed serious research attention towards ultrathin crystalline silicon wafer-based solar cells. This work seeks to address a major challenge for such cells namely poor light absorption in thin absorbers. A novel inclined back reflector layer (BRL) of aluminium oxide for both planar and textured surfaced silicon devices with a thickness of 20 µm is investigated, combined with the passivation properties of the metal oxide film. A study of symmetric, asymmetric, and textured conformal BRL revealed an optical gain of ~32% for the optimized BRL as compared to the structure without BRL. The combined effect of passivation and back reflection of the proposed BRL improved the power conversion efficiency by 60%. The optical and efficiency gain of 17% was observed for the structures with inclined BRL, as compared to that of a planar BRL. A remarkable omnidirectional response was also observed for textured BRL structures.

show abstract

Back reflector coating using a photonic crystal for highly efficient solar cells using a new metamaterial with the most extreme positive index of refraction

Cited by 2 publications

References 23 publications

Analysis of a gas sensor based on one-dimensional photonic crystal structure with a designed defect cavity

Analysis of a gas sensor based on one-dimensional photonic crystal structure with a designed defect cavity

Non-uniform Al₂O₃ back reflector for performance enhancement of thin rear passivated silicon solar cells

Contact Info

Product

Resources

About

Back reflector coating using a photonic crystal for highly efficient solar cells using a new metamaterial with the most extreme positive index of refraction

Cited by 2 publications

References 23 publications

Analysis of a gas sensor based on one-dimensional photonic crystal structure with a designed defect cavity

Analysis of a gas sensor based on one-dimensional photonic crystal structure with a designed defect cavity

Non-uniform Al2O3 back reflector for performance enhancement of thin rear passivated silicon solar cells

Contact Info

Product

Resources

About

Non-uniform Al₂O₃ back reflector for performance enhancement of thin rear passivated silicon solar cells