scholarly journals High-efficiency, large-bandwidth silicon-on-insulator grating coupler based on a fully-etched photonic crystal structure

2010 ◽  
Vol 96 (5) ◽  
pp. 051126 ◽  
Author(s):  
Kresten Yvind ◽  
Jørn M. Hvam
Keyword(s):  
Crystal Structure ◽  
Photonic Crystal ◽  
High Efficiency ◽  
Silicon On Insulator ◽  
Photonic Crystal Structure ◽  
Grating Coupler ◽  
Large Bandwidth

High power tapered lasers with optimized photonic crystal structure for low divergence and high efficiency

2018 ◽  
Vol 33 (4) ◽  
pp. 045010 ◽  
Author(s):  
Xiaolong Ma ◽  
Hongwei Qu ◽  
Aiyi Qi ◽  
Xuyan Zhou ◽  
Pijie Ma ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Photonic Crystal ◽  
High Power ◽  
High Efficiency ◽  
Photonic Crystal Structure

scholarly journals Rational Design and Simulation of Two-Dimensional Perovskite Photonic Crystal Absorption Layers Enabling Improved Light Absorption Efficiency for Solar Cells

Energies ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2460
Author(s):  
Jian Zou ◽  
Mengnan Liu ◽  
Shuyu Tan ◽  
Zhijie Bi ◽  
Yong Wan ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Solar Cells ◽  
Photonic Crystal ◽  
Incident Light ◽  
Absorption Efficiency ◽  
Utilization Efficiency ◽  
Photonic Crystal Structure ◽  
Two Dimensional ◽  
Photoelectric Conversion ◽  
Absorption Layer

A two-dimensional perovskite photonic crystal structure of Methylamine lead iodide (CH3NH3PbI3, MAPbI3) is rationally designed as the absorption layer for solar cells. The photonic crystal (PC) structure possesses the distinct “slow light” and band gap effect, leading to the increased absorption efficiency of the absorption layer, and thus the increased photoelectric conversion efficiency of the battery. Simulation results indicate that the best absorption efficiency can be achieved when the scattering element of indium arsenide (InAs) cylinder is arranged in the absorption layer in the form of tetragonal lattice with the height of 0.6 μm, the diameter of 0.24 μm, and the lattice constant of 0.4 μm. In the wide wavelength range of 400–1200 nm, the absorption efficiency can be reached up to 82.5%, which is 70.1% higher than that of the absorption layer without the photonic crystal structure. In addition, the absorption layer with photonic crystal structure has good adaptability to the incident light angle, presenting the stable absorption efficiency of 80% in the wide incident range of 0–80°. The results demonstrate that the absorption layer with photonic crystal structure can realize the wide spectrum, wide angle, and high absorption of incident light, resulting in the increased utilization efficiency of solar energy.

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