Photodetectors based on controllable growth of large-area graphene films

Zheng, Jian; Xu, Xiang; Zhang, Yong; Xie, Qingguo; Wu, Xiaoming; Yu, Kehan; Wei, Wei

doi:10.1016/j.tsf.2020.138129

Cited by 7 publications

(3 citation statements)

References 34 publications

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“…In 2012, Dong et al [ 53 ] exploited the ultrahigh electron mobility of graphene to produce a fast time-response PN junction detector. Using an ultrafast pump probe, they measured the photocurrent response time of the detector as approximately 1.5 ps at room temperature and found that this response time increased to 4 ps at 20 K. With the development of CVD technology, Zheng et al [ 54 ] demonstrated a low-temperature metal-free plasma-enhanced CVD method to grow large-scale graphene to fabricate an all-graphene PD. The detector has a high response rate in the visible range, with the maximum photogenerated current reaching the mA level when the wavelength is 405 nm.…”

Section: Full Graphene Pdsmentioning

confidence: 99%

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Recent Progress on Graphene Flexible Photodetectors

Wang

Xiao

et al. 2022

Materials

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In recent years, optoelectronics and related industries have developed rapidly. As typical optoelectronics devices, photodetectors (PDs) are widely applied in various fields. The functional materials in traditional PDs exhibit high hardness, and the performance of these rigid detectors is thus greatly reduced upon their stretching or bending. Therefore, the development of new flexible PDs with bendable and foldable functions is of great significance and has much interest in wearable, implantable optoelectronic devices. Graphene with excellent electrical and optical performance constructed on various flexible and rigid substrates has great potential in PDs. In this review, recent research progress on graphene-based flexible PDs is outlined. The research states of graphene conductive films are summarized, focusing on PDs based on single-component graphene and mixed-structure graphene, with a systematic analysis of their optical and mechanical performance, and the techniques for optimizing the PDs are also discussed. Finally, a summary of the current applications of graphene flexible PDs and perspectives is provided, and the remaining challenges are discussed.

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Section: Full Graphene Pdsmentioning

confidence: 99%

“…The response rate and speed of the device are also high, which is exactly what is required for PDs. This is also the reason why the performance of graphene hybrid PDs is higher than those of traditional (semiconductor photodetectors) SCPDs [ 54 ].…”

Section: Graphene Hybrid Pdsmentioning

confidence: 99%

Recent Progress on Graphene Flexible Photodetectors

Wang

Xiao

et al. 2022

Materials

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“…Graphene has the highest carrier mobility and its charge density can be tuned by electrostatic gating, as well as by charge transfer from adjacent materials. [ 1–7 ] Semiconducting QDs are excellent light harvesters, present a size‐tunable bandgap [ 8 ] and can be obtained by low‐cost chemical synthesis, resulting highly processable due to their solution dispersibility, and their tunable surface chemistry. [ 9–13 ] Recently, hybrid photoconductive detectors, combining QDs as light absorbers and photocarrier generators with graphene or other 2D materials as charge collectors, have attracted great interest due to their ultrahigh gain and high responsivity (10 7 A W −1 ), enabling high‐sensitivity and gate‐tunable photodetection.…”

Section: Introductionmentioning

confidence: 99%

π–π Interactions Mediated Pyrene Based Ligand Enhanced Photoresponse in Hybrid Graphene/PbS Quantum Dots Photodetectors

Ahn¹,

Ingrosso

Panniello

et al. 2021

Adv Elect Materials

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Hybrid graphene and quantum dots (QDs) photodetectors merge the excellent conductivity and ambipolar electric field sensitivity of graphene, with the unique properties of QDs. The photoresponsivity of these devices depends strongly on the charge transfer at the graphene/QDs interface. Here 1‐pyrene butyric acid (PBA)‐coated PbS QDs with single layer graphene (SLG) are used to investigate the effect of pyrene as a π–π mediator to enhance charge transfer at the SLG/QDs junction under illumination. The surface chemistry at the QD–QD and SLG/QD interface is studied with the conventional tetrabutylammonium iodide (TBAI) QD linker. The hybrid SLG/QD photodetectors with PBA as a SLG‐QD linker demonstrate a photoresponse up to 30% higher than that recorded for devices where only TBAI is used, due to the strong electron coupling between SLG and QDs. Transconductance measurements show that PBA provokes electron depletion in SLG ascribed to the tendency to delocalize the QDs holes, favoring their transfer to SLG. This surface ligand is found to improve the interaction between the QDs light absorbers and the SLG charge collector, leading to an increased photodetection response. This demonstrates that ligand engineering can enhance charge dynamics and boost the performance of the hybrid device.

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

Zheng

Bao

et al. 2023

Appl. Phys. B

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Photodetectors based on controllable growth of large-area graphene films

Cited by 7 publications

References 34 publications

Recent Progress on Graphene Flexible Photodetectors

Recent Progress on Graphene Flexible Photodetectors

π–π Interactions Mediated Pyrene Based Ligand Enhanced Photoresponse in Hybrid Graphene/PbS Quantum Dots Photodetectors

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

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