Ligand modification enhanced quantum dot LEDs: principles and methods

Dong, Xiaofeng; Wang, Kaili; Bu, Yanyan; Wang, Xiangfu

doi:10.1039/d3tc01945d

Cited by 6 publications

(1 citation statement)

References 121 publications

(140 reference statements)

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“…Longchain organic ligands like oleic acid and dodecanethiol, which facilitate the nucleation, encapsulate the CuInS 2 QDs during the synthesis. The insulating nature of these organic ligands adversely affects the conductivity of the QDs-based films leading to lower performance of the devices [54,55]. Additionally, lattice defects within the materials and at the SnO 2 /CuInS 2 interface serve as centers for non-radiative exciton decay [56].…”

Section: Resultsmentioning

confidence: 99%

Solution processed CuInS₂/SnO₂ heterojunction based self-powered photodetector for UV encrypted visible light communication

Sharma,

Yadav,

Lalita

et al. 2024

Nano Ex.

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A photodetector (PD) featuring dual-band detection capability and self-powering attributes is crucial for various applications in sensing, communication, and imaging. Here, we present a self-powered PD based on a solution-processed CuInS2/SnO2 heterojunction capable of detecting UV and visible light spectra. The CuInS2 layer was composed of ∼2nm-sized quantum dots (QDs) synthesized using the hot injection method, while the SnO2 layer was fabricated using a straightforward solgel technique. This self-powered PD displayed a significant spectral response across both ultraviolet (UV) (355nm) and visible light (532nm) ranges, all accomplished without the need for external bias. The PD demonstrates rapid detection, with rise and decay times of 125ms and 156ms for visible light and 85ms and 200ms for UV light, respectively, at a power level of 15mW. The PD achieved responsivity values of 10.66µA/W and 34.56µA/W for visible and UV light, respectively. The impressive capability for dual-band detection in both ultraviolet (UV) and visible light showcases the practical feasibility and utility of this device for self-powered photodetection and deciphering UV-encrypted visible light communication. Moreover, its straightforward solution-based processing attribute renders it valuable for the mass production ofdevices and technology.

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Section: Resultsmentioning

confidence: 99%

Solution processed CuInS₂/SnO₂ heterojunction based self-powered photodetector for UV encrypted visible light communication

Sharma,

Yadav,

Lalita

et al. 2024

Nano Ex.

View full text Add to dashboard Cite

show abstract

Surface ligand engineering of perovskite quantum dots for n-type and stretchable photosynaptic transistor with an ultralow energy consumption

Chen,

Lin,

Syu

et al. 2024

Chemical Engineering Journal

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Cerium-doped sulfur quantum dots for the detection of lead ions and the use of anticounterfeiting ink

Kumar,

Rhim

2024

Colloids and Surfaces A: Physicochemical and Engineering Aspect

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Ligand modification enhanced quantum dot LEDs: principles and methods

Abstract: Many academics are exploring employing quantum dots (QDs) to make better LED devices due to their narrow emission band, low reaction temperature, low self-absorption effect, and high photoluminescence quantum yields...

Cited by 6 publications

References 121 publications

Solution processed CuInS₂/SnO₂ heterojunction based self-powered photodetector for UV encrypted visible light communication

Solution processed CuInS₂/SnO₂ heterojunction based self-powered photodetector for UV encrypted visible light communication

Surface ligand engineering of perovskite quantum dots for n-type and stretchable photosynaptic transistor with an ultralow energy consumption

Cerium-doped sulfur quantum dots for the detection of lead ions and the use of anticounterfeiting ink

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Ligand modification enhanced quantum dot LEDs: principles and methods

Abstract: Many academics are exploring employing quantum dots (QDs) to make better LED devices due to their narrow emission band, low reaction temperature, low self-absorption effect, and high photoluminescence quantum yields...

Cited by 6 publications

References 121 publications

Solution processed CuInS2/SnO2 heterojunction based self-powered photodetector for UV encrypted visible light communication

Solution processed CuInS2/SnO2 heterojunction based self-powered photodetector for UV encrypted visible light communication

Surface ligand engineering of perovskite quantum dots for n-type and stretchable photosynaptic transistor with an ultralow energy consumption

Cerium-doped sulfur quantum dots for the detection of lead ions and the use of anticounterfeiting ink

Contact Info

Product

Resources

About

Solution processed CuInS₂/SnO₂ heterojunction based self-powered photodetector for UV encrypted visible light communication

Solution processed CuInS₂/SnO₂ heterojunction based self-powered photodetector for UV encrypted visible light communication