| AVS 54th International Symposium | |
| Plasmonics Topical Conference | Tuesday Sessions |
| Session PL-TuP |
| Session: | Plasmonics Poster Session |
| Presenter: | R.B. Konda, Norfolk State University |
| Authors: | R.B. Konda, Norfolk State University A.K. Pradhan, Norfolk State University |
| Correspondent: | Click to Email |
Recently, surface plasmon resonance in metallic nanoparticles are being explored for a variety of applications including powerful and evolving toolkit for biological detection and molecular sensing, focusing of light, subwavelength photonics, and near-field optical microscopy. Here we show the enhancement of Raman intensity, photoluminescence and absorption in CdSe semiconductor via excitation of surface plasmon resonances in Au nanoparticles insitu pulsed-laser deposited on CdSe semiconductor film surface. CdSe was selected as a model material to illustrate our fabrication method and to demonstrate the physical concept of the enhanced optical properties, such as improving the functionality or performance of photodetectors and related optoelectronic devices, due to plasmon resonance in proximate noble metal nanoparticles. We have also demonstrated enhancement of photocurrent response in p-Si/n-CdSe junction diodes that correspond closely to the nanoparticle plasmon resonance wavelengths via the excitation of surface plasmon resonances in spherical Au nanoparticles deposited on the semiconductor surface. Our results suggest a variety of approaches for improving the performance of devices such as related to enhanced photodetection.