Dual use of one-dimensional, long-pitch metallic gratings for polarization-diverse light absorption enhancement in organic photovoltaic structures

Author

Dhakal, Rabin ; Yifen Liu ; Dalal, Vikram ; Jaeyoun Kim

Author_Institution

Dept. of Electr. & Comput. Eng., Iowa State Univ., Ames, IA, USA

fYear

2013

fDate

9-14 June 2013

Firstpage

1

Lastpage

3

Abstract

We report design and experimental realization of an organic PV device structure to trap incident light in all polarization states utilizing 1D, long-pitch (> 1000 n m) gratings. Polarization diversity was achieved by balancing the plasmonic and guided mode-based light trapping routes between different polarization states. The experiment showed strong enhancements in absorption in all polarization states and translate into a 15~25% increase in the power conversion efficiency.

Keywords

diffraction gratings; light absorption; light polarisation; optical design techniques; optical waveguides; photodetectors; plasmonics; radiation pressure; 1D long-pitch metallic gratings; guided mode-based light trapping routes; organic photovoltaic device structure design; plasmonic-based light trapping routes; polarization-diverse light absorption enhancement; power conversion efficiency; Absorption; Charge carrier processes; Gratings; Photovoltaic systems; Plasmons;

fLanguage

English

Publisher

ieee

Conference_Titel

Lasers and Electro-Optics (CLEO), 2013 Conference on

Conference_Location

San Jose, CA

Type

conf

Filename

6832988