White light emitting diodes based on green graphene quantum dots and red graphene quantum dots

Yin, Luqiao; Zhang, Doudou; Li, Weitao; Hu, Yameng; Wang, Liang; Zhang, Jianhua

doi:10.1080/15421406.2021.1971850

Cited by 7 publications

(5 citation statements)

References 22 publications

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“…Yin prepared green and red GQDs with optical properties; measured and analyzed their morphology, structure, and PL; and applied them to the preparation of white light-emitting diodes (WLEDs) [ 93 ]. In the driving current range of 20 mA to 350 mA, WLEDs showed excellent luminescent properties, indicating that WLEDs had great potential in the development of high-power devices.…”

Section: Applications Of Go Gqds and Goqds Luminescencementioning

confidence: 99%

“…GOQDs with narrow size distribution were synthesized under different temperature conditions, but they have different PL properties, which also illustrates that there are other factors affecting the luminescence of quantum dots together with the effect of size. Yin prepared green and red GQDs with optical properties; measured and analyzed their morphology, structure, and PL; and applied them to the preparation of white lightemitting diodes (WLEDs) [93]. In the driving current range of 20 mA to 350 mA, WLEDs showed excellent luminescent properties, indicating that WLEDs had great potential in the development of high-power devices.…”

Section: Electron Devicementioning

confidence: 99%

See 1 more Smart Citation

Photoluminescence and Fluorescence Quenching of Graphene Oxide: A Review

Xiao

Zhou

et al. 2022

Nanomaterials

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In recent decades, photoluminescence (PL) material with excellent optical properties has been a hot topic. Graphene oxide (GO) is an excellent candidate for PL material because of its unique optical properties, compared to pure graphene. The existence of an internal band gap in GO can enrich its optical properties significantly. Therefore, GO has been widely applied in many fields such as material science, biomedicine, anti-counterfeiting, and so on. Over the past decade, GO and quantum dots (GOQDs) have attracted the attention of many researchers as luminescence materials, but their luminescence mechanism is still ambiguous, although some theoretical results have been achieved. In addition, GO and GOQDs have fluorescence quenching properties, which can be used in medical imaging and biosensors. In this review, we outline the recent work on the photoluminescence phenomena and quenching process of GO and GOQDs. First, the PL mechanisms of GO are discussed in depth. Second, the fluorescence quenching mechanism and regulation of GO are introduced. Following that, the applications of PL and fluorescence quenching of GO–including biomedicine, electronic devices, material imaging–are addressed. Finally, future development of PL and fluorescence quenching of GO is proposed, and the challenges exploring the optical properties of GO are summarized.

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Section: Applications Of Go Gqds and Goqds Luminescencementioning

confidence: 99%

Section: Electron Devicementioning

confidence: 99%

Photoluminescence and Fluorescence Quenching of Graphene Oxide: A Review

Xiao

Zhou

et al. 2022

Nanomaterials

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“…105 Additionally, GQDs with a band gap can exhibit chemiluminescence (CL) and electroluminescence (EL) in addition to PL. [118][119][120][121][122][123] CL involves extracting energy emitted by exothermic reactions to produce light, while EL is the phenomenon of luminescence resulting from energy transitions induced by an electric field. For instance, a recent study by Qin et al explored the CL emission in undoped GQDs, N-doped GQDs, and N,S-hetero-doped GQDs.…”

Section: Optical Propertymentioning

confidence: 99%

Engineering functionalization and properties of graphene quantum dots (GQDs) with controllable synthesis for energy and display applications

Cho,

Bae,

Hong

2024

Nanoscale

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“…8,9 The formation of an interface between GQDs and small organic molecules can lead to functional materials, whose optoelectronic properties can be easily tuned by incorporating changes within the molecules. [10][11][12][13] GQDs are applied to a number of applications such as solar cells, [14][15][16][17] light-emitting diodes [18][19][20][21] and supercapacitors. [22][23][24] Moreover, their low toxicity and biocompatibility enable the use of these materials in medical bioimaging 25 and drug delivery applications.…”

Section: Introductionmentioning

confidence: 99%