Related Experiment Video
Updated: Apr 10, 2026
06:58
Photodeposition of Pd onto Colloidal Au Nanorods by Surface Plasmon Excitation
Published on: August 15, 2019
8.0K
Surface plasmon propelled high-performance CdSe nanoribbons photodetector
Optics Express
|June 16, 2015
Summary
We developed a highly sensitive plasmonic photodetector (PPD) using cadmium selenide nanoribbons decorated with gold nanoparticles. This PPD shows enhanced red light detection due to improved light coupling and electron transfer.
Area of Science:
- Materials Science
- Nanotechnology
- Optoelectronics
Background:
- Plasmonic photodetectors (PPDs) offer potential for enhanced light sensing.
- Improving the sensitivity and detectivity of PPDs remains a key challenge.
Purpose of the Study:
- To develop an ultrasensitive plasmonic photodetector (PPD) for red light detection.
- To investigate the role of plasmonic hollow gold nanoparticles (HGNs) in enhancing PPD performance.
Main Methods:
- Fabrication of PPDs using high-crystalline CdSe nanoribbons (NRs).
- Decoration of CdSe NRs with plasmonic HGNs to leverage localized surface plasmon resonance (LSPR).
- Characterization of device performance, including responsivity and detectivity, supported by finite element method (FEM) simulations.
Main Results:
- The HGN-decorated CdSe NR PPD exhibited significantly improved responsivity and detectivity for red light.
- LSPR from HGNs effectively coupled incident light, enhancing light absorption.
- FEM simulations confirmed that localized field enhancement and direct electron transfer from HGNs contributed to the performance gains.
Conclusions:
- HGN decoration is an effective strategy to enhance the sensitivity of CdSe-based plasmonic photodetectors.
- The enhanced performance is attributed to plasmonic effects and improved charge transfer mechanisms.
- This work presents a promising approach for developing next-generation photodetectors with superior red light sensing capabilities.
