Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.



Hot electron injection induced electron--hole plasma lasing in single microwire covered by large size Ag nanoparticles

Abstract

In addition to the plasmon-mediated resonant coupling mechanism, plasmon-induced hot electron transfer can provide an alternative approach to construct high-performance optoelectronic devices for various applications, including photodetectors, photovoltaics, and molecular biology. In this work, a single Ga-doped ZnO microwire covered by large size (the diameter $d\simeq$200~nm) Ag nanoparticles (AgNPs@ZnO:Ga MW) was prepared. Due to the excitation of hybrid quadrupole plasmons, ultraviolet whispering gallery mode lasing with a low threshold and significant enhancement of the optical output intensity were realized. Particularly, electron--hole--plasma (EHP) lasing features, such as the redshift of the lasing band and the broadening of the spectral linewidth, could also be captured. This excellent phenomenon can be attributed to the hybrid quadrupole plasmon-induced generation and injection of hot electrons, resulting in bandgap renormalization due to the mismatch of the hybrid quadrupole plasmons and the ZnO:Ga excitons. The prompt hot electron generation and injection induced EHP-lasing characteristics can provide new possibilities for designing high-performance optoelectronic devices. More importantly, the proposed bandgap renormalization also enables the high-level engineering of the optoelectronic features by fine tuning the plasmonic behaviors.

Back to tab navigation

Article information


Submitted
29 Apr 2020
Accepted
18 May 2020
First published
19 May 2020

CrystEngComm, 2020, Accepted Manuscript
Article type
Paper

Hot electron injection induced electron--hole plasma lasing in single microwire covered by large size Ag nanoparticles

M. Jiang, P. Wan, K. Tang, X. Zhou and C. Kan, CrystEngComm, 2020, Accepted Manuscript , DOI: 10.1039/D0CE00640H

Social activity

Search articles by author

Spotlight

Advertisements