| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Enhanced Optical Absorption of Amorphous Silicon Films by Ag Nanostructures |
| ZHOU Bing, LI Dong-Sheng, XIANG Lue-Lue, YANG De-Ren |
| State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027 |
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| Cite this article: |
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ZHOU Bing, LI Dong-Sheng, XIANG Lue-Lue et al 2010 Chin. Phys. Lett. 27 037303 |
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Abstract The optical absorption of amorphous silicon (α-Si) films is enhanced by silver (Ag) nanostructures deposited on the films. The reflection at the long wavelength side of localized plasmon polaritons (LPPs) resonance originated from Ag nanostructures is significantly decreased, i.e. the optical absorption is enhanced. The results show that the average reflection value of the amorphous silicon films in the wavelength range of 900-1200 nm could be decreased by 11.4%. Moreover, the reduction of the reflection is found to be mainly dependent on the size of the Ag nanostructures, which is related to the island sizes, i.e. the LPP's resonance peak position.
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| Keywords:
73.20.Mf
71.35.Cc
78.40.Pg
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Received: 15 December 2009
Published: 09 March 2010
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| PACS: |
73.20.Mf
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(Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))
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71.35.Cc
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(Intrinsic properties of excitons; optical absorption spectra)
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78.40.Pg
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(Disordered solids)
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