In situ addition WS2 quantum dots on polymer films for white emission LED applications

[Display omitted] •Hydrothermal approach is implemented to produce tungsten disulfide quantum dots.•WS2 Quantum dots were impregnated in polymer film to make simple white emission.•The stacked polymer film emits white light due to the scattering of UV light. This research focuses on the development...

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Bibliographic Details
Published in:Materials letters 2023-12, Vol.352, p.135135, Article 135135
Main Authors: Arjun Kumar, B., Subalakshmi, P., Mujahid Alam, Mohammed, Ramalingam, Gopal, Sangaraju, Sambasivam
Format: Article
Language:English
Subjects:
Hydrothermal
Quantum dot
Tungsten disulfide
White LED
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Summary:[Display omitted] •Hydrothermal approach is implemented to produce tungsten disulfide quantum dots.•WS2 Quantum dots were impregnated in polymer film to make simple white emission.•The stacked polymer film emits white light due to the scattering of UV light. This research focuses on the development of simple and low-cost white emission films for LED applications. Tungsten disulfide quantum dots (WS2 QDs) were synthesized using a simple hydrothermal approach and then studied physio-chemical properties. Morphological investigation revealed that the QDs were 3.7 nm in size. The QDs were incorporated into a Polyvinyl Alcohol (PVA) film, yielding stacked films that emitted white light. The stacked film had a color rendering index of 76 % and CIE coordinates of (0.35, 0.34). Through the entrapment of WS2 QDs within PVA films, this study proposes a feasible strategy for lab-scale development of white emission LEDs.
ISSN:0167-577X
1873-4979
DOI:10.1016/j.matlet.2023.135135