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.
Bibliographical noteFunding Information:
This work was supported by the Center for Distributed Sensor Network at GIST, and the Korea Science and Engineering Foundation (KOSEF) NCRC grant funded by the Korea government (MEST) (Grant No. R15-2008-006-02001-0).
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)