Title :
Antireflective scheme for InGaP/InGaAs/Ge triple junction solar cells based on TiO2 biomimetic structures
Author :
Kuo-Hsuan Hung ; Ting-Gang Chen ; Tung-Ting Yang ; Peichen Yu ; Chung-Yu Hong ; Yu-Rue Wu ; Guo-Chung Chi
Author_Institution :
Dept. of Photonics, Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
In this work, we demonstrate the device design, characterization, fabrication and analysis of biomimetic antireflective structures on III-V multi-junction solar cell. The cell without antireflective structure has a severe change of refractive index between the cell and air, causing a huge reflection (about 30%) and decrease the cell efficiency significantly. We can reduce light reflection by coating a proper material on the cell, diminishing the refractive index difference between cell and air interface. The optimization of single antireflection coating and biomimetic structure will be discussed and the experimental results will also be presented.
Keywords :
III-V semiconductors; antireflection coatings; biomimetics; elemental semiconductors; gallium arsenide; gallium compounds; germanium; indium compounds; light reflection; optimisation; refractive index; semiconductor heterojunctions; solar cells; III-V multijunction solar cell; InGaP-InGaAs-Ge; TiO2; air interface; biomimetic antireflective structures; biomimetic structures-based triple junction solar cells; cell interface; device design; light reflection; refractive index; single antireflection coating; Abstracts; Current measurement; Wavelength measurement;
Conference_Titel :
Photovoltaic Specialists Conference (PVSC), 2012 38th IEEE
Conference_Location :
Austin, TX
Print_ISBN :
978-1-4673-0064-3
DOI :
10.1109/PVSC.2012.6318284