Nitrogen-Oxygen Co-Functionalized Waste Cassava Peel-Derived Carbon Dots for White Led

Title

Nitrogen-Oxygen Co-Functionalized Waste Cassava Peel-Derived Carbon Dots for White Led

Creator

George J.; Balachandran M.

Description

White light emitting diodes (WLEDs)are most sought after, with the broad spectra ranging from cool to warm white light being skillfully utilized to create various modes of lighting effects. The fabrication of WLEDs is generally sophisticated, involving either multiple components emitting in different regions or single-component phosphors with complex elemental compositions. In the present work, WLEDs utilizing solvent-tuned carbon dots derived from waste cassava peel are reported through a facile one-step microwave-assisted solvothermal method. The carbon dots show evident UV absorption and correspondingly emit broad visible light spectra when dispersed in a dimethylformamide (DMF)-polyvinyl alcohol (PVA)blend, making themselves suitable white lightemitting down conversion materials. The successful transformation of a 400nm UV LED into a WLED with a general colour rendering index (CRI) of 83 and colour correlation temperature (CCT) of 4426 K gives a promising future outlook toward developing eco and economic-friendly WLEDs. 2025 Wiley-VCH GmbH.

Source

Advanced Sustainable Systems

Date

2025-01-01

Publisher

John Wiley and Sons Inc

Subject

absorption; carbon dots; emission; optical bandgap; white lightemitting diodes

Coverage

George J., Department ofPhysics andElectronics, Christ (Deemed To Be University), Bangalore, 560029, India; Balachandran M., Department ofPhysics andElectronics, Christ (Deemed To Be University), Bangalore, 560029, India

Rights

Restricted Access

Relation

ISSN: 23667486

Format

Online

Language

English

Type

Article

Identifier

https://doi.org/10.1002/adsu.202400938

https://www.scopus.com/inward/record.uri?eid=2-s2.0-85215301967&doi=10.1002%2fadsu.202400938&partnerID=40&md5=55a1d0ff1551d72801eef143fbf698b2