Surface tailoring enables colloidal quantum dot: Metal-oxide nanocrystal hybrid ink for broadband photon energy conversion

Choi, Jae‐Hwan; Si, Min-Jae; Kim, Sol-Hee; Maniyamgama, Nipuni; Kim, Dong-Eon; Jee, Seungin; Kim, Yun-Hoo; Jeong, Hoon-Seok; Kim, Beom-Kwan; Kim, Chang Jo; Lee, Jung‐Yong; Baek, Se‐Woong

doi:10.1016/j.apsusc.2022.155804

Cited by 3 publications

(1 citation statement)

References 72 publications

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“…[48] Choi et al further emphasised the potential of QDs in energy-efficient devices by developing a stable hybrid ink using colloidal QDs and metaloxide nanoparticles for efficient solar cells. [49] Doping QDs with specific elements can also improve their performance. Jinze Li et al synthesised carbon-incorporated, burger-like ZnO nanoparticle clusters with improved photocatalytic activity, demonstrating the impact of carbon doping.…”

Section: Zno-cqds Quantum Dots Hybrid Nanocompositesmentioning

confidence: 99%

Nanostructured ZnO‐CQD Hybrid Heterostructure Nanocomposites: Synergistic Engineering for Sustainable Design, Functional Properties, and High‐Performance Applications

Mishra,

Chianella,

Sarkar

et al. 2024

ChemNanoMat

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Hybrid nanocomposites integrating nanostructured zinc oxide (ZnO) and carbon quantum dots (CQDs) with designed heterostructures possess exceptional optical and electronic properties. These properties hold immense potential for advancements across diverse scientific and technological fields. This review article investigates the synthesis, properties, and applications of ZnO‐CQD heterostructure nanocomposites. Recent breakthroughs in fabrication methods are examined, including hydrothermal, microwave‐assisted, and eco‐friendly techniques. Key preparation methods such as sol‐gel, co‐precipitation, and electrochemical deposition are discussed, emphasizing their role in controlling heterostructure formation. This review analyses the impact of heterostructures on optical and electronic properties, such as fluorescence, photoluminescence, and photocatalytic activity. Synergistic interactions between ZnO and CQDs within heterostructures are highlighted, demonstrating how they lead to substantial performance improvements. Applications of ZnO‐CQD heterostructures span solar cells, LEDs, photodetectors, water purification, antimicrobial treatments, gas sensing, catalysis, biomedical imaging, drug delivery, environmental sensing, and energy storage. Insights are provided into refining synthesis methods, enhancing characterisation techniques, and broadening the application landscape. Challenges like stability are addressed, along with strategies for optimised performance and practical implementation.

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Section: Zno-cqds Quantum Dots Hybrid Nanocompositesmentioning

confidence: 99%

Nanostructured ZnO‐CQD Hybrid Heterostructure Nanocomposites: Synergistic Engineering for Sustainable Design, Functional Properties, and High‐Performance Applications

Mishra,

Chianella,

Sarkar

et al. 2024

ChemNanoMat

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Colloidal InAs Quantum Dot‐Based Infrared Optoelectronics Enabled by Universal Dual‐Ligand Passivation

Si,

Jee,

Yang

et al. 2024

Advanced Science

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Solution‐processed low‐bandgap semiconductors are crucial to next‐generation infrared (IR) detection for various applications, such as autonomous driving, virtual reality, recognitions, and quantum communications. In particular, III–V group colloidal quantum dots (CQDs) are interesting as nontoxic bandgap‐tunable materials and suitable for IR absorbers; however, the device performance is still lower than that of Pb‐based devices. Herein, a universal surface‐passivation method of InAs CQDs enabled by intermediate phase transfer (IPT), a preliminary process that exchanges native ligands with aromatic ligands on the CQD surface is presented. IPT yields highly stable CQD ink. In particular, desirable surface ligands with various reactivities can be obtained by dispersing them in green solvents. Furthermore, CQD near‐infrared (NIR) photodetectors are demonstrated using solution processes. Careful surface ligand control via IPT is revealed that enables the modulation of surface‐mediated photomultiplication, resulting in a notable gain control up to ≈10 with a fast rise/fall response time (≈12/36 ns). Considering the figure of merit (FOM), EQE versus response time (or −3 dB bandwidth), the optimal CQD photodiode yields one of the highest FOMs among all previously reported solution‐processed nontoxic semiconductors comprising organics, perovskites, and CQDs in the NIR wavelength range.

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Colloidal Quantum Dot Solid-Based Infrared Optoelectronics Enabled by Solution-Phase Ligand Exchange

Si,

Kim,

Jeong

et al. 2024

Korean J. Chem. Eng.

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Surface tailoring enables colloidal quantum dot: Metal-oxide nanocrystal hybrid ink for broadband photon energy conversion

Cited by 3 publications

References 72 publications

Nanostructured ZnO‐CQD Hybrid Heterostructure Nanocomposites: Synergistic Engineering for Sustainable Design, Functional Properties, and High‐Performance Applications

Nanostructured ZnO‐CQD Hybrid Heterostructure Nanocomposites: Synergistic Engineering for Sustainable Design, Functional Properties, and High‐Performance Applications

Colloidal InAs Quantum Dot‐Based Infrared Optoelectronics Enabled by Universal Dual‐Ligand Passivation

Colloidal Quantum Dot Solid-Based Infrared Optoelectronics Enabled by Solution-Phase Ligand Exchange

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