1 research outputs found
Plasmonic Carbon-Dot-Decorated Nanostructured Semiconductors for Efficient and Tunable Random Laser Action
Carbon
dots have emerged as popular materials in various research fields,
including biological and photovoltaic areas, while significant reports
are lacking related to their applications in laser devices, which
play a significant role in our daily life. In this work, we demonstrate
the first controllable random laser assisted by the surface plasmon
effect of carbon dots. Briefly, carbon dots derived from candle soot
are randomly deposited on the surface of gallium nitride (GaN) nanorods
to enhance the ultraviolet fluorescence of GaN and generate plasmonically
enhanced random laser action with coherent feedback. Furthermore,
potentially useful functionalities of tunable lasing threshold and
controllable optical modes are achieved by adjusting the numbers of
carbon dots, enabling applications in optical communication and identification
technologies. In addition to providing an efficient alternative for
plasmonically enhanced random laser devices with simple fabrication
and low cost, our work also paves a useful route for the application
of environmentally friendly carbon dots in optoelectronic devices