Localized Surface Plasmon Resonance Enhanced Light Absorption in AuCu/CsPbCl<sub>3</sub> Core/Shell Nanocrystals

Gong, Maogang; Alamri, Mohammed; Ewing, Dan; Sadeghi, Seyed M.; Wu, Judy

doi:10.1002/adma.202002163

Cited by 74 publications

(77 citation statements)

References 51 publications

(64 reference statements)

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“…[105] Thus, the high EQE or gain in the sensitizer/graphene nanohybrids is the combination of the strong quantum confinement effects in sensitizers (high τ c ) and in graphene (low τ c due to high mobility μ c ), [60,62] which has been demonstrated in various sensitizer/graphene nanohybrid photodetectors. [93,[106][107][108] It is well known that the physical properties of graphene can be affected by the interface between graphene and other materials including the supporting substrates. [109,110] Figure 5a-d shows an atomically thin Zn acetate or Zn(Ac) layer on the ZnO QDs that can completely block the charge transfer from ZnO QDs to graphene and lead to negligible photoresponse to UV light.…”

Section: Graphene-based Nanohybridsmentioning

confidence: 99%

Section: Recent Progress In Nanohybrid Photodetectorsmentioning

confidence: 99%

“…A template‐modulated colloidal approach for synthesizing metal core (AuCu) and perovskite shell (CsPbCl 3 ) NCs was reported. [ 106 ] The enhanced light absorption was found in the CsPbCl 3 shell with a thickness of 2–4 nm, ascribed to the LSPR AuCu core with an average diameter of 7.1 nm. The LSPR AuCu core‐induced light absorption of the perovskite shell enables a remarkably enhanced photoresponse by 30 times in core/shell perovskite QDs/graphene nanohybrid photodetectors, as compared with the counterparts of perovskite QDs/graphene devices.…”

Section: Recent Progress In Nanohybrid Photodetectorsmentioning

confidence: 99%

“…h) Spectral photoresponsivity measured on AuCu/CsPbCl 3 core/shell/graphene hybrid photodetectors and CsPbCl 3 /graphene counterpart. Reproduced with permission [106]. Copyright 2020, John Wiley and Sons.…”

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Nanohybrid Photodetectors

Gong

2021

Advanced Photonics Research

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Little imagination is needed to gauge the impact of lowdimensional nanostructures such as 0D quantum dots (QDs) and nanocrystals (NCs), [1][2][3][4] 1D nanowires (NWs) and nanotubes, [5,6] and 2D atomic sheets (graphene, MoS 2 , etc.). [7][8][9] With the exponential increase in the discovery of low-dimensional nanostructures, and in understanding how different and how peculiar the electrons behave when confined in the 0D, 1D, and 2D limits, an immediate next step is followed to use these low-dimensional nanostructures as "lego" pieces to build a variety of devices for electronic, photonic, and optoelectronic applications with functionality and performance unprecedented by, or better than that of, their counterparts based on conventional 3D materials. In such a quest, nanohybrids with regard to either heterostructures of the low-dimensional nanostructures, or their heterostructures with conventional materials (bulks, films, polymers, etc.), have emerged as an important class of nanomaterials for practical applications in electronic devices, photonic devices, optoelectronic devices, structural devices, medicine, sensors, etc. In fact, the past decade or so has witnessed exciting progress made in the research and development of nanohybrids, promoted particularly by the discovery of a large variety of 2D atomic materials including graphene, transition metal dichalcogenides (TMDCs), etc. [7][8][9] Despite differences in various nanohybrids stemming from different device requirements, all nanohybrids have one thing in common: the presence of heterojunction interfaces that play a critical role in the functionality and performance of the nanohybrids-based devices. This explains an intensive effort in recent research toward understanding and controlling such interfaces. Optoelectronic nanohybrids, such as QDs/graphene nanohybrids, present an excellent example. During the optoelectronic process of light absorption, exciton (or photogenerated electronhole pairs) dissociation into free charge carriers, charge transfer, and transport, the QD/graphene interface affects almost the entire process by providing the required band-edge offset for exciton dissociation and the electric field to drive the charge transfer. As the dimensions or at least one of the dimensions of the low-dimensional nanostructures approach from sub-nm to a few nm, the effect of such heterojunction interfaces on the nanohybrid properties becomes increasingly critical and controlling such interfaces must be at an atomic scale. This represents a major challenge toward achieving the anticipated nanohybrids' device performance, especially in practical applications that require wafer-scale synthesis, manipulation, and characterization of these atomically small, single-crystalline lowdimensional nanostructures. It should be noted that many excellent reviews or book chapters are available in literature covering the recent progress made in fabrication, characterization, and applications of nanohybrids. [8][9][10][11][12][13][14][15][16] Instead, this article intend...

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Section: Graphene-based Nanohybridsmentioning

confidence: 99%

Section: Recent Progress In Nanohybrid Photodetectorsmentioning

confidence: 99%

Section: Recent Progress In Nanohybrid Photodetectorsmentioning

confidence: 99%

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confidence: 99%

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Nanohybrid Photodetectors

Gong

2021

Advanced Photonics Research

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“…[28,29] Therefore, integrating plasmon nanostructures into the PSCs as light-trapping units can significantly improve the efficiency of the device with traditional structures. [30,31,[40][41][42][43][44][45][46][47][48][49]32,[50][51][52][53][54][33][34][35][36][37][38][39] In one of our preliminary works, the dosing of silver nanorods (AgNRs) aqueous solution into the perovskite with a bandgap of 1.6 eV resulted in a power conversion efficiency (PCE) of 20.18 % and well stability, which can retain 95 % of its initial PCE after storage for 20 days in an N 2 atmosphere. [55] The concerns over the long-term stability of silver in halide perovskites and the lack of study on the plasmon effect of gold nanorods (AuNRs) motivated us to use in the current work the AuNR aqueous solution to improve the performance of PSCs via an asynchronous synergistic effect (ASE) strategy.…”

Section: Introductionmentioning

confidence: 99%

Plasmon‐Enhanced Perovskite Solar Cells with Efficiency Beyond 21 %: The Asynchronous Synergistic Effect of Water and Gold Nanorods

Gao

Zhang

et al. 2021

ChemPlusChem

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Although perovskite films have excellent extinction coefficients, further increase of the light-absorbing capacity by increasing the thickness of the active layer is always required in perovskite solar cells (PSCs). However, to maintain the morphology quality of the perovskite layer, the film thickness is subject to certain restrictions. To increase the light absorbance without significantly inflating the perovskite film while keeping the high quality of the perovskite film, herein, we added an aqueous solution of gold nanorods (AuNRs) to the perovskite precursor solution via a so-called asynchronous synergistic effect (ASE) strategy of water and AuNR. The former improves the quality of the perovskite film during the crystallization process to reduce defect density and enhance carrier mobility. Simultaneously, the latter increases the light absorption of the perovskite layer through the localized surface plasmon resonance (LSPR) effect when the device is exposed to light. We show that the ASE strategy leads to an excellent power conversion efficiency (PCE) of 21.73 % and outstanding long-term stability, which can retain 95 % of its initial PCE after storage for three months in an air atmosphere.

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Ultra‐Stable and Sensitive Ultraviolet Photodetectors Based on Monocrystalline Perovskite Thin Films

Liu

Ding

et al. 2023

Adv Funct Materials

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The detection of ultraviolet (UV) radiation with effective performance and robust stability is essential to practical applications. Metal halide singlecrystal perovskites (ABX 3 ) are promising next-generation materials for UV detection. The device performance of all-inorganic CsPbCl 3 photodetectors (PDs) is still limited by inner imperfection of crystals grown in solution. Here wafer-scale single-crystal CsPbCl 3 thin films are successfully grown by vapor-phase epitaxy method, and the as-constructed PDs under UV light illumination exhibit an ultralow dark current of 7.18 pA, ultrahigh ON/OFF ratio of ≈5.22 × 10 5 , competitive responsivity of 32.8 A W −1 , external quantum efficiency of 10867% and specific detectivity of 4.22 × 10 12 Jones. More importantly, they feature superb long-term stability toward moisture and oxygen within twenty-one months, good temperature tolerances at low and high temperatures. The ability of the photodetector arrays for excellent UV light imaging is further demonstrated.

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Localized Surface Plasmon Resonance Enhanced Light Absorption in AuCu/CsPbCl₃ Core/Shell Nanocrystals

Cited by 74 publications

References 51 publications

Nanohybrid Photodetectors

Nanohybrid Photodetectors

Plasmon‐Enhanced Perovskite Solar Cells with Efficiency Beyond 21 %: The Asynchronous Synergistic Effect of Water and Gold Nanorods

Ultra‐Stable and Sensitive Ultraviolet Photodetectors Based on Monocrystalline Perovskite Thin Films

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Localized Surface Plasmon Resonance Enhanced Light Absorption in AuCu/CsPbCl3 Core/Shell Nanocrystals

Cited by 74 publications

References 51 publications

Nanohybrid Photodetectors

Nanohybrid Photodetectors

Plasmon‐Enhanced Perovskite Solar Cells with Efficiency Beyond 21 %: The Asynchronous Synergistic Effect of Water and Gold Nanorods

Ultra‐Stable and Sensitive Ultraviolet Photodetectors Based on Monocrystalline Perovskite Thin Films

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Localized Surface Plasmon Resonance Enhanced Light Absorption in AuCu/CsPbCl₃ Core/Shell Nanocrystals