ANU Open Research Repository has been upgraded. We are still working on a few minor issues, which may result in short outages throughout the day. Please get in touch with repository.admin@anu.edu.au if you experience any issues.
 

Light trapping with titanium dioxide diffraction gratings fabricated by nanoimprinting

Date

2014

Authors

Wang, Er-Chien
Mokkapati, Sudha
White, Thomas
Soderstorm, Thomas
Varlamov, Sergey
Catchpole, Kylie

Journal Title

Journal ISSN

Volume Title

Publisher

John Wiley & Sons Inc

Abstract

Dielectric scattering structures are a promising way of trapping light in solar cells. Titanium dioxide is a particularly attractive candidate material because of its high refractive index and ability to be deposited on a finished solar cell. Here, we present an experimental demonstration of photocurrent enhancement in thin film recrystallised silicon solar cells using TiO2 pillar arrays fabricated on the rear of the cells using nanoimprint lithography. A short circuit current enhancement of 19% is measured experimentally, and excellent agreement with numerical simulations is obtained. We show numerically that by replacing the Ag capping present on the cells with a detached rear Ag back reflector, the enhancement could reach 37%.

Description

Keywords

Citation

Source

Progress in Photovoltaics: Research and Applications

Type

Journal article

Book Title

Entity type

Access Statement

License Rights

DOI

10.1002/pip.2294

Restricted until

2037-12-31