Dielectric diffraction gratings for light-trapping in InGaAs-GaAs quantum well solar cells

Author

Turner, Steven ; Mokkapati, S. ; Jolley, G. ; Fu, L. ; Tan, H.H. ; Jagadish, C.

Author_Institution

Dept. of Electron. Mater. Eng., Australian Nat. Univ., Canberra, ACT, Australia

fYear

2012

fDate

12-14 Dec. 2012

Firstpage

129

Lastpage

130

Abstract

The enhancement in short-circuit current density (Jsc) provided by a TiO2 diffraction grating composed of rectangular strips at the rear of an In0.21Ga0.79As-GaAs quantum well solar cell (QWSC) is investigated using finite-difference time-domain (FDTD) simulations. Optimisation of the grating height, periodicity and fill-factor yielded an enhancement of 5.3% in Jsc over the reference cell.

Keywords

III-V semiconductors; diffraction gratings; gallium arsenide; indium compounds; semiconductor quantum wells; solar cells; FDTD simulations; QWSC; dielectric diffraction gratings; diffraction grating; fill-factor; finite-difference time-domain simulations; grating height; light-trapping; periodicity; quantum well solar cell; quantum well solar cells; reference cell; short-circuit current density; Absorption; Dielectrics; Diffraction; Diffraction gratings; Gallium arsenide; Gratings; Plasmons;

fLanguage

English

Publisher

ieee

Conference_Titel

Optoelectronic and Microelectronic Materials & Devices (COMMAD), 2012 Conference on

Conference_Location

Melbourne, VIC

ISSN

1097-2137

Print_ISBN

978-1-4673-3047-3

Type

conf

DOI

10.1109/COMMAD.2012.6472394

Filename

6472394