The effect of localized surface plasmon on the photocurrent of silicon nanocrystal photodetectors

Sang Kyun Kim, Chang Hee Cho, Baek Hyun Kim, Yong Seok Choi, Seong Ju Park, Kimoon Lee, Seongil Im

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We report on the photocurrent of silicon nanocrystal (Si NC) photodetectors (PDs) that contain silver (Ag) islands. Here, a larger increase in the photocurrent of Si NC PDs was observed with increasing Ag island size. The maximum increase occurred at the wavelength of the Ag surface plasmon resonance and redshifted as the size of the Ag islands increased. As a result, a 97% increase in photocurrent generation was observed and this was attributed mostly to the coupling of Si NC with the localized surface plasmon of the Ag islands in Si NC PDs.

Original languageEnglish
Article number183108
JournalApplied Physics Letters
Issue number18
Publication statusPublished - 2009 May 18


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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