Broadband light-trapping enhancement in an ultrathin film a-Si absorber using whispering gallery modes and guided wave modes with dielectric surface-textured structures.

Journal Article (Journal Article)

An embedded nanosphere dielectric structure on an a-Si ultrathin film improves weighted absorption from 23.8% to 39.9%. The PMMA embedding layer offers a guided wave mode as well as mechanical robustness, in addition to the resonant whispering gallery modes coupling. Broadband light-trapping enhancements are observed by dielectric surface textured structures of hemispheres, nanocones, nanospheres, or embedded nanospheres.

Full Text

Duke Authors

Cited Authors

  • Kang, G; Park, H; Shin, D; Baek, S; Choi, M; Yu, D-H; Kim, K; Padilla, WJ

Published Date

  • May 2013

Published In

Volume / Issue

  • 25 / 18

Start / End Page

  • 2617 - 2623

PubMed ID

  • 23529900

Electronic International Standard Serial Number (EISSN)

  • 1521-4095

International Standard Serial Number (ISSN)

  • 0935-9648

Digital Object Identifier (DOI)

  • 10.1002/adma.201204596


  • eng