Self-assembling three-dimensional colloidal photonic crystal structure with high crystalline quality

2001 ◽  
Vol 78 (1) ◽  
pp. 52-54 ◽  
Author(s):  
Yong-Hong Ye ◽  
François LeBlanc ◽  
Alain Haché ◽  
Vo-Van Truong
Keyword(s):  
Crystal Structure ◽  
Photonic Crystal ◽  
Three Dimensional ◽  
Crystalline Quality ◽  
Photonic Crystal Structure ◽  
High Crystalline Quality ◽  
Self Assembling

scholarly journals Cuticle network and orientation preference of photonic crystals in the scales of the weevil Lamprocyphus augustus

2018 ◽  
Vol 15 (145) ◽  
pp. 20180360 ◽  
Author(s):  
R. Ebihara ◽  
H. Hashimoto ◽  
J. Kano ◽  
T. Fujii ◽  
S. Yoshioka
Keyword(s):  
Crystal Structure ◽  
Photonic Crystal ◽  
Focused Ion Beam ◽  
Ion Beam ◽  
Three Dimensional ◽  
Unit Cell ◽  
Photonic Crystal Structure ◽  
Dimensional Structure ◽  
Microscopy Imaging ◽  
Photonic Band

This paper reports the structural and optical investigations of the structural colour of the weevil Lamprocyphus augustus . The photonic crystal structure within the weevil's scales was investigated using sequential focused ion-beam milling and scanning electron microscopy imaging. We carefully analysed the reconstructed three-dimensional structure to determine the unit cell of the photonic crystal. It was found that the cuticle network of the cubic unit cell perfectly matches the previously reported diamond-based network. However, different results were obtained for the crystal orientations of the small crystal domains that comprise the entire photonic crystal structure in the scales: <111> directions are highly preferred along the surface normal of the scale. This finding explains the fact that the scale is almost uniformly coloured despite the multi-domain structure. It is confirmed experimentally and theoretically that the wavelength range of the reflection band corresponds to the gap of the photonic band.

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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