Journal
APPLIED PHYSICS LETTERS
Volume 95, Issue 24, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.3275708
Keywords
elemental semiconductors; metallic thin films; nanopatterning; photoconductivity; photodiodes; polaritons; silicon; silver; surface plasmons
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Funding
- State Key Program for Basic Research of China [2010CB630703]
- National Natural Science Foundation of China [10523001, 10874079]
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We demonstrate that Ag-Si photodiodes allow photocurrents to be modulated by changing periods of nanopatterns on Ag film. The maximum and minimum photocurrents occur in certain periods corresponding to the excitation of surface plasmon polariton and Wood's anomaly, which can be predicted with the help of related theories. Therefore, it is feasible to design nanopatterns to satisfy special requirements.
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