Near-field optical beam induced current (NOBIC) characteristics of a GaAs solar cell with biomimetic antireflective structures

Author

Yang, ChengYing ; Tsai, M.A. ; Yu, Peichen

Author_Institution

Dept. of Photonic, Nat. Chiao Tung Univ., Hsinchu, Taiwan

fYear

2011

fDate

19-24 June 2011

Abstract

Photoelectric conversion characteristics of a GaAs solar cell with biomimetic antireflective nanostructure are investigated by using an near-field optical beam induced current (NOBIC) technique. The mappings of the nanostructured profile and photocurrent induced by incident light with different wavelengths can be obtained simultaneously. The measured results of NOBIC show the optical conversion efficiency is mostly harvested near the valley of the nanostructures, which serve as light guides for incident light with three different wavelengths. The observation is consistent with the simulation results using a rigorous coupled wave analysis.

Keywords

III-V semiconductors; OBIC; biomimetics; gallium arsenide; nanostructured materials; photoconductivity; solar cells; GaAs; biomimetic antireflective structures; light guides; nanostructured profile; near-field optical beam induced current; optical conversion efficiency; photoelectric conversion; rigorous coupled wave analysis; solar cell; Absorption; Biomedical optical imaging; Optical imaging; Optical reflection; Optical sensors; Optical variables measurement; Photovoltaic cells;

fLanguage

English

Publisher

ieee

Conference_Titel

Photovoltaic Specialists Conference (PVSC), 2011 37th IEEE

Conference_Location

Seattle, WA

ISSN

0160-8371

Print_ISBN

978-1-4244-9966-3

Type

conf

DOI

10.1109/PVSC.2011.6186288

Filename

6186288