High-performance graphene–PbS quantum dots hybrid photodetector with broadband response and long-time stability

Zheng, Jian; Di, Wanchao; Bao, Beibei; Lü, Jiaqi; Yu, Kehan; Wei, Wei

doi:10.1007/s00340-023-07988-y

Cited by 5 publications

(1 citation statement)

References 27 publications

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“…PbS QDs have excellent light absorption properties and are often used to prepare high-performance photodetectors. Due to the significant quantum-limited effect of PbS QDs, their band gap can be easily sized to cover most of the short-wave infrared region [2] .Therefore, PbS QDs have become one of the best candidates for the fabrication of NIR optoelectronic devices by solution processing [3][4][5] . And ZnO QDs are gradually becoming the most widely used electron transport layer (ETL) because of their good electron affinity, high electron mobility, n-type conductivity and easy preparation by solution method [6] .The combination of narrow-bandgap PbS QDs and ZnO QDs with excellent electron transport properties is expected to achieve broad-band, high-performance photodetection.…”

Section: Introductionmentioning

confidence: 99%

Photodetector based on ZnO/PbS-EDT heterojunction

Liang,

Liu,

Ding

et al. 2023

J. Phys.: Conf. Ser.

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This paper presents the fabrication of a photodetector using a ZnO/PbS-EDT heterojunction. The combination of PbS QDs with narrow bandgap and ZnO QDs with excellent electron transport properties results in a high-performance photodetector with broad-spectrum capabilities. The solid-state ligands are used to exchange PbS QDs to form a thick light-absorbing layer. The study also discusses the effect of UV treatment on the morphology of the PbS film and its impact on the device performance. The UV-treated devices exhibit good performance even when operated at 0V. When subjected to 940 nm light irradiation, the maximum responsivity is 37.5 mA/w, the detectivity is 1.16x1012 Jones, and the rise and fall time are 53 μs and 35 μs, respectively. This device demonstrates remarkable performance with its fast response, high responsivity, and low noise.

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Section: Introductionmentioning

confidence: 99%

Photodetector based on ZnO/PbS-EDT heterojunction

Liang,

Liu,

Ding

et al. 2023

J. Phys.: Conf. Ser.

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Two‐Dimensional Transition Metal Dichalcogenides (2D TMDs) Coupled With Zero‐Dimensional Nanomaterials (0D NMs) for Advanced Photodetection

Liu,

Tang,

Cyu

et al. 2024

Small Methods

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The integration of 2D transition metal dichalcogenides (TMDs) with other materials presents a promising approach to overcome inherent limitations and enable the development of novel functionalities. In particular, 0D nanomaterials (0D NMs) offer notable advantages for photodetection, including broadband light absorption, size‐dependent optoelectronic properties, high quantum efficiency, and good compatibility. Herein, the integration of 0D NMs with 2D TMDs to develop high‐performance photodetectors is reviewed. The review provides a comprehensive overview of different types of 0D NMs, including plasma nanoparticles (NPs), up‐conversion NPs, quantum dots (QDs), nanocrystals (NCs), and small molecules. The discussion starts with an analysis of the mechanism of 0D NMs on 2D TMDs in photodetection, exploring various strategies for improving the performance of hybrid 2D TMDs/0D NMs. Recent advancements in photodetectors combining 2D TMDs with 0D NMs are investigated, particularly emphasizing critical factors such as photosensitivity, photogain, specific detectivity, and photoresponse speed. The review concludes with a summary of the current status, highlighting the existing challenges and prospective developments in the advancement of 0D NMs/2D TMDs‐based photodetectors.

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Fluorescent Chemo sensor nano-materials for Cancer bio-markers signalling: Towards development of non-invasive early detection strategies

Mbugua

2023

Dyes and Pigments

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High-performance graphene–PbS quantum dots hybrid photodetector with broadband response and long-time stability

Cited by 5 publications

References 27 publications

Photodetector based on ZnO/PbS-EDT heterojunction

Photodetector based on ZnO/PbS-EDT heterojunction

Two‐Dimensional Transition Metal Dichalcogenides (2D TMDs) Coupled With Zero‐Dimensional Nanomaterials (0D NMs) for Advanced Photodetection

Fluorescent Chemo sensor nano-materials for Cancer bio-markers signalling: Towards development of non-invasive early detection strategies

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