Enhancement of optical transmission with random nanohole structures.
We demonstrate an enhancement of optical transmission by creating randomly distributed nanoholes in a glass surface using a simple bottom-up fabrication process. V-shaped holes with sub-100 nm diameter are created by anodized aluminum oxide template and dry etching on glass substrates. The broadband and omnidirectional antireflective effect of the proposed nanostructures is confirmed by measuring the transmittance of the patterned glasses, leading to 3% better transmission. Subsequently, the short-circuit current and the open-circuit voltage of a solar cell with nanostructures are enhanced by 3-4%, improving the solar cell efficiency from 10.47% to 11.20% after two weeks of outdoor testing.
Department of Electrical and Computer Engineering, National University of Singapore, 4 Engineering Drive 3, Singapore.
Jaesung
J
Son
Lalit Kumar
LK
Verma
Aaron James
AJ
Danner
Charanjit Singh
CS
Bhatia
Hyunsoo
H
Yang
D004867:Equipment Design; D005898:Glass; D008855:Microscopy, Electron, Scanning / Q000379:methods; D053758:Nanoparticles; D036103:Nanotechnology / Q000379:methods*; D055095:Optics and Photonics; D012031:Refractometry; D012993:Solar Energy