Plasmonic light-trapping and quantum efficiency measurements on nanocrystalline silicon solar cells and silicon-on-insulator devices

Hui Zhao, Birol Ozturk, Eric Allan Schiff, Baojie Yan, J. Yang, S. Guha

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

Quantum efficiency measurements in nanocrystalline silicon (nc-Si:H)solar cells deposited onto textured substrates indicate that these cells are close to the "stochastic light-trapping limit" proposed by Yablonovitch in the 1980s. An interesting alternative to texturing is "plasmonic" light-trapping based on non-textured cells and using an overlayer of metallic nanoparticles to produce light-trapping. While this type of light-trapping has not yet been demonstrated for nc-Si:H solar cells, significant photocurrent enhancements have been reported on silicon-on-insulator devices with similar optical properties to nc-Si:H. Here we report our measurements of quantum efficiencies in nc-Si:H solar cells and normalized photoconductance spectra in SOI photodetectors with and without silver nanoparticle layers. As was done previously, the silver nanoparticles were created by thermal annealing of evaporated silver thin films. We observed enhancement in the normalized photoconductance spectra of SOI photodetectors at longer wavelengths with the silver nanoparticles. For nc-Si:H solar cells, we have not yet observed significant improvement of the quantum efficiency with the addition of annealed silver films.

Original languageEnglish (US)
Title of host publicationMaterials Research Society Symposium Proceedings
Pages59-64
Number of pages6
Volume1245
StatePublished - 2010
Event2010 MRS Spring Meeting - San Francisco, CA, United States
Duration: Apr 5 2010Apr 9 2010

Other

Other2010 MRS Spring Meeting
CountryUnited States
CitySan Francisco, CA
Period4/5/104/9/10

Fingerprint

Nanocrystalline silicon
Silicon solar cells
Silicon
Quantum efficiency
Silver
quantum efficiency
solar cells
trapping
silver
insulators
Solar cells
Nanoparticles
silicon
nanoparticles
SOI (semiconductors)
Photodetectors
photometers
augmentation
Texturing
cells

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Mechanics of Materials

Cite this

Zhao, H., Ozturk, B., Schiff, E. A., Yan, B., Yang, J., & Guha, S. (2010). Plasmonic light-trapping and quantum efficiency measurements on nanocrystalline silicon solar cells and silicon-on-insulator devices. In Materials Research Society Symposium Proceedings (Vol. 1245, pp. 59-64)

Plasmonic light-trapping and quantum efficiency measurements on nanocrystalline silicon solar cells and silicon-on-insulator devices. / Zhao, Hui; Ozturk, Birol; Schiff, Eric Allan; Yan, Baojie; Yang, J.; Guha, S.

Materials Research Society Symposium Proceedings. Vol. 1245 2010. p. 59-64.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhao, H, Ozturk, B, Schiff, EA, Yan, B, Yang, J & Guha, S 2010, Plasmonic light-trapping and quantum efficiency measurements on nanocrystalline silicon solar cells and silicon-on-insulator devices. in Materials Research Society Symposium Proceedings. vol. 1245, pp. 59-64, 2010 MRS Spring Meeting, San Francisco, CA, United States, 4/5/10.
Zhao H, Ozturk B, Schiff EA, Yan B, Yang J, Guha S. Plasmonic light-trapping and quantum efficiency measurements on nanocrystalline silicon solar cells and silicon-on-insulator devices. In Materials Research Society Symposium Proceedings. Vol. 1245. 2010. p. 59-64
Zhao, Hui ; Ozturk, Birol ; Schiff, Eric Allan ; Yan, Baojie ; Yang, J. ; Guha, S. / Plasmonic light-trapping and quantum efficiency measurements on nanocrystalline silicon solar cells and silicon-on-insulator devices. Materials Research Society Symposium Proceedings. Vol. 1245 2010. pp. 59-64
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