Carbon-dot-based solid-state luminescent materials: Synthesis and applications in white light emitting diodes and optical sensors

Heavy metal ion detection using green precursor derived carbon dots

“…As the bottom-up pathway is attractive due its simple application and easily tunable properties ( Chahal et al., 2021 ), it has been the main approach to obtain CDs ( da Júnior et al., 2021 ). Here the small size components (organic molecular precursors) are self-assembled by physical or chemical processes ( Kashani et al., 2019 ; Baragau et al., 2021 ; Li et al., 2021b ) such as hydrothermal, solvothermal, pyrolysis, combustion, microwave-assisted, or electrochemical process to promote the interaction and the formation of CDs ( Shaker et al., 2020 ; Deng et al., 2021 ; Hou et al., 2021 ; Xu et al., 2021 ). Among them, the foremost techniques for biomass-derived CDs have been the hydrothermal/solvothermal method and pyrolysis.…”

The coupling of blue emitting carbon dots with Eu3+/Tb3+ co-doped luminescent glasses for utilization in white light emitting diodes

“…, Cd, Pb, and As. 34–38 In our previous work, we demonstrated that combining blue-emitting carbon dots (BCDs) with Dy 3+ doped glasses could be an efficient way to generate white light emission and compensate for the low blue light emission of Dy 3+ ions. However, the PLQY values and colorimetric properties, e.g.…”

Green synthesis and characterisation of rice water derived fluorescent carbon dots

“…Carbon dots (C-dots) are carbon based nanomaterials with apparent applications in diverse fields from light emitting diodes (LEDs) and sensing to environmental and food safety [1][2][3][4][5][6][7][8][9] on account of their distinctive properties. Since their discovery [10], C-dots have become major carbon based luminescent materials [11][12][13].…”

“…The synthesis technique adopted has a prominent role in the properties of C-dots [21,22]. An appreciable number of methods are available in the literature for the synthesis of carbon dots [4]. Among them, two major synthesis techniques -hydrothermal method and microwave-assisted synthesisare widely adopted [22].…”