Dual band emission in carbon dots

Dual band emission in carbon dots

WoS Article

Here we report, the preparation of carbon dots showing dual band emission through hydrothermal method. These carbon dots emit 382 nm and 538 nm wavelengths, at 320 nm and 420 nm excitations respectively. However, under 365 nm excitation these carbon dots show well resolved emission peaks at 435 nm and 538 nm. The emission peak at 435 nm show excitation wavelength dependence, while the emission peak at 538 nm is independent of the excitation wavelength. The competition among different emission centers and non-radiative traps due various functional groups contribute to fluorescent properties of the carbon dots.

Here we report, the preparation of carbon dots showing dual band emission through hydrothermal method. These carbon dots emit 382 nm and 538 nm wavelengths, at 320 nm and 420 nm excitations respectively. However, under 365 nm excitation these carbon dots show well resolved emission peaks at 435 nm and 538 nm. The emission peak at 435 nm show excitation wavelength dependence, while the emission peak at 538 nm is independent of the excitation wavelength. The competition among different emission centers and non-radiative traps due various functional groups contribute to fluorescent properties of the carbon dots.

carbon dots, hydrothermal method, luminescence

carbon dots, hydrothermal method, luminescence

MOHAN, R.; DRBOHLAVOVÁ, J.; HUBÁLEK, J.

2019

16.01.2018

Elsevier

0009-2614

CHEMICAL PHYSICS LETTERS

692

196–201

Kingdom of the Netherlands

196

201

14

https://www.sciencedirect.com/science/article/pii/S0009261417311089?via%3Dihub

http://hdl.handle.net/