Application of high-efficiency green fluorescent carbon dots prepared by acid catalysis in multicolour LEDs

This paper reviews the state-of-the-art technologies, characterizations, materials (precursors and encapsulants), and challenges concerning multicolor and white light-emitting diodes (LEDs) based on carbon dots (CDs) as color converters. Herein, CDs are exploited to achieve emission in LEDs at wavelengths longer than the pump wavelength. White LEDs are typically obtained by pumping broad band visible-emitting CDs by an UV LED, or yellow–green-emitting CDs by a blue LED. The most important methods used to produce CDs, top-down and bottom-up, are described in detail, together with the process that allows one to embed the synthetized CDs on the surface of the pumping LEDs. Experimental results show that CDs are very promising ecofriendly candidates with the potential to replace phosphors in traditional color conversion LEDs. The future for these devices is bright, but several goals must still be achieved to reach full maturity.

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Application of high-efficiency green fluorescent carbon dots prepared by acid catalysis in multicolour LEDs

Abstract: Green fluorescent CDs prepared by acid catalysis with m-phenylenediamine showed concentration dependent fluorescence. Green, yellow and white LEDs were prepared according to the concentration dependent fluorescence characteristics of CDs.

Cited by 3 publications

References 35 publications

The preparation, optical properties and applications of carbon dots derived from phenylenediamine

The preparation, optical properties and applications of carbon dots derived from phenylenediamine

One-pot synthesis of nitrogen-doped carbonized polymer dots with tunable emission for multicolor light-emitting diodes

Color Conversion Light-Emitting Diodes Based on Carbon Dots: A Review

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