Design of light trapping nanopatterned solar cells based on three-dimensional optical and electrical modeling

Author

Hui-Hsin Hsiao ; Hung-Chun Chang ; Yuh-Renn Wu

Author_Institution

Grad. Inst. of Photonics & Optoelectron., Nat. Taiwan Univ., Taipei, Taiwan

fYear

2014

fDate

1-4 Sept. 2014

Firstpage

157

Lastpage

158

Abstract

The optical and electrical properties of a new type photonic-plasmonic nanostructure on the back contact of solar cells were investigated numerically through the three-dimensional (3D) finite-difference time-domain (FDTD) method and the Poisson and drift-diffusion (DDCC) solver. The focusing effect and the Fabry-Perot resonances are identified as the main mechanisms for the enhancement of the optical generation rate as well as the short circuit current density. In addition, the surface topography of the nanopattern has a strong effect on the device physics such as the potential and recombination profiles, and therefore influencing the electrode collecting efficiency of the photocurrents.

Keywords

Fabry-Perot resonators; current density; electrodes; finite difference time-domain analysis; integrated optics; integrated optoelectronics; nanopatterning; nanophotonics; optical design techniques; optical focusing; photoemission; plasmonics; radiation pressure; solar cells; FDTD; Fabry-Perot resonances; Poisson solver; drift-diffusion solver; electrode collecting efficiency; finite-difference time-domain method; focusing effect; light trapping nanopatterned solar cells; optical generation rate; photocurrents; photonic-plasmonic nanostructure; recombination profiles; short circuit current density; surface topography; three-dimensional electrical modeling; three-dimensional optical modeling; Finite difference methods; Optical device fabrication; Optical films; Optical reflection; Optical scattering; Radiative recombination; Time-domain analysis; light trapping; solar cell;

fLanguage

English

Publisher

ieee

Conference_Titel

Numerical Simulation of Optoelectronic Devices (NUSOD), 2014 14th International Conference on

Conference_Location

Palma de Mallorca

ISSN

2158-3234

Print_ISBN

978-1-4799-3681-6

Type

conf

DOI

10.1109/NUSOD.2014.6935404

Filename

6935404