Unconventional solution-phase epitaxial growth of organic-inorganic hybrid perovskite nanocrystals on metal sulfide nanosheets

Zhang, Zhipeng; Sun, Fangfang; Zhu, Zhaohua; Dai, Jie; Gao, Kai; Wei, Qi; Shi, Xiaotong; Sun, Qian; Yan, Yan; Li, Hai; Yu, Hai‐Dong; Xing, Guichuan; Huang, Xiao; Huang, Wei

doi:10.1007/s40843-018-9274-y

Cited by 21 publications

(27 citation statements)

References 63 publications

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“…Moreover, organic–inorganic hybrid perovskites are compatible with the simple, low‐temperature, and low‐cost spin‐coating method . The simple solution‐processed fabrication method along with the unique optoelectronic properties opened a new field in combining the traditional 2D TMDs with halide perovskite together for the high‐performance photodetectors …”

Section: Introductionmentioning

confidence: 99%

Extremely Low Dark Current MoS₂ Photodetector via 2D Halide Perovskite as the Electron Reservoir

Wang

Chen

et al. 2020

Advanced Optical Materials

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Toward pursuing high‐performance photodetectors based on 2D transition metal dichalcogenides (TMDs) such as molybdenum disulfide (MoS2), it is desirable to reduce the high dark current and sluggish response time. Here, in multilayer MoS2‐based photodetectors, a 2D halide perovskite, (C6H5C2H4NH3)2PbI4 ((PEA)2PbI4), is introduced as a bifunctional material: both as electron reservoir to reduce free carriers and passivation agent to passivate defects. Surprisingly, dark current is suppressed by six orders of magnitude after coating a (PEA)2PbI4 thin layer onto pristine MoS2 photodetector, with the dark current decreased to 10−11 A. This huge reduction of dark current suggests an efficient interlayer charge transfer from MoS2 to (PEA)2PbI4, which is further verified by photoluminescence quenching phenomenon. It indicates that (PEA)2PbI4 serves as electron reservoir to reduce carrier density of MoS2, resulting in ultrahigh detectivity (1.06 × 1013 Jones). Moreover, the response speed is also accelerated by more than 100‐fold due to passivation by 2D perovskite. In addition, it is found that this type of photodetectors can further work at self‐power mode (with the bias of 0 V). Therefore, the strategy of applying 2D perovskite on the surface of TMDs provides a novel way to fabricate high‐performance photodetectors.

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Section: Introductionmentioning

confidence: 99%

Extremely Low Dark Current MoS₂ Photodetector via 2D Halide Perovskite as the Electron Reservoir

Wang

Chen

et al. 2020

Advanced Optical Materials

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“…Solution‐phase in situ growth method is a low‐cost and high‐yield approach for fabricating MHP/2D material heterogeneous micro‐ or nanostructures. [ 33b,35,37a,66 ] During a typical in situ growth process, 2D nanosheets are usually pre‐added into the Pb‐contained perovskite precursor solution to form a uniform mixture. Then the MHP/2D material heterostructures can be formed with the reprecipitation of perovskite crystals on the surface of pre‐dispersed 2D nanosheets, leading to a close‐contact interface between perovskite crystals and 2D materials (see Figure 2e).…”

Section: Fabrication Techniques Of Metal Halide Perovskite/2d Materiamentioning

confidence: 99%

“…The CsPbBr 3 /BP heterostructures exhibit a much shorter average lifetime of 4.77 ± 0.54 ns compared to that (7.07 ± 0.69 ns) of the CsPbBr 3 /BP nanohybrids, which stems from the faster charge extraction from CsPbBr 3 to BP. The modified hot‐injection method was then further applied for synthesizing CsPbBr 3 /RGO, CsPbX 3 /h‐BN and CsPbBr 3 /MXene heterostructures, [ 66d,69 ] indicating its universality for producing various MHP/2D material heterostructures.…”

Section: Fabrication Techniques Of Metal Halide Perovskite/2d Materiamentioning

confidence: 99%

Metal Halide Perovskite/2D Material Heterostructures: Syntheses and Applications

et al. 2021

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The past decade has witnessed the great success achieved by metal halide perovskites (MHPs) in photovoltaic and related fields. However, challenges still remain in further improving their performance, as well as, settling the stability issue for future commercialization. Recently, MHP/2D material heterostructures that combining MHPs with the low‐cost and solution‐processable 2D materials have demonstrated unprecedented improvement in both performance and stability due to the distinctive features at hetero‐interface. The diverse fabrication techniques of MHPs and 2D materials allow them to be assembled as heterostructures with different configurations in a variety of ways. Moreover, the large families of MHPs and 2D materials provide the opportunity for the rational design and modification on compositions and functionalities of MHP/2D materials heterostructures. Herein, a comprehensive review of MHP/2D material heterostructures from syntheses to applications is presented. First, various fabrication techniques for MHP/2D material heterostructures are introduced by classifying them into solid‐state methods and solution‐processed methods. Then the applications of MHP/2D heterostructures in various fields including photodetectors, solar cells, and photocatalysis are summarized in detail. Finally, current challenges for the development of MHP/2D material heterostructures are highlighted, and future opportunities for the advancements in this research field are also provided.

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“…[46,[48][49][50] The epitaxial growth of perovskite MAPbBr 3 NCs on MoS 2 was also achieved by a solution route. [51] The heterojunctions showed that the perovskite epitaxial relationship within (001) MoS 2 nanosheets aligned along either the MAPbBr 3 [100]/MoS 2 [100] direction or the MAPbBr 3 [110]/MoS 2 [210] direction.…”

Section: Epitaxial Growth Of Van Der Waals Heterojunctionsmentioning

confidence: 99%

Perovskite Nano‐Heterojunctions: Synthesis, Structures, Properties, Challenges, and Prospects

Wang

2020

Small Structures

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Scientific and industrial interest on perovskite semiconductor materials has grown rapidly in recent years. Through the efforts of researchers professionals in chemistry, physics, materials and electronics, etc., many records based on perovskites have been and are being refreshed. The brilliant performances emerge not only from the excellent properties of perovskite themselves, but also originate from the composite material systems of hybridizing perovskites with heteromaterials. Herein, first, the crystal and nanostructures of perovskite materials, semiconductor-based heterojunctions, and the categories of perovskite heterojunction are fundamentally introduced. Then, the state-of-the-art synthesis methods, size and structure control, electron structure-related physical properties, and applications of the perovskite-based nano-heterojunctions are comprehensively reviewed. Finally, perspectives on tackling challenges and developing trends are discussed.

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Unconventional solution-phase epitaxial growth of organic-inorganic hybrid perovskite nanocrystals on metal sulfide nanosheets

Cited by 21 publications

References 63 publications

Extremely Low Dark Current MoS₂ Photodetector via 2D Halide Perovskite as the Electron Reservoir

Extremely Low Dark Current MoS₂ Photodetector via 2D Halide Perovskite as the Electron Reservoir

Metal Halide Perovskite/2D Material Heterostructures: Syntheses and Applications

Perovskite Nano‐Heterojunctions: Synthesis, Structures, Properties, Challenges, and Prospects

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Unconventional solution-phase epitaxial growth of organic-inorganic hybrid perovskite nanocrystals on metal sulfide nanosheets

Cited by 21 publications

References 63 publications

Extremely Low Dark Current MoS2 Photodetector via 2D Halide Perovskite as the Electron Reservoir

Extremely Low Dark Current MoS2 Photodetector via 2D Halide Perovskite as the Electron Reservoir

Metal Halide Perovskite/2D Material Heterostructures: Syntheses and Applications

Perovskite Nano‐Heterojunctions: Synthesis, Structures, Properties, Challenges, and Prospects

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Extremely Low Dark Current MoS₂ Photodetector via 2D Halide Perovskite as the Electron Reservoir

Extremely Low Dark Current MoS₂ Photodetector via 2D Halide Perovskite as the Electron Reservoir