Interfacial charge transfer in WS2 monolayer/CsPbBr3 microplate heterostructure

Yan, Zhenzhong; Jiang, Zhao-Han; Jun, Lu; Ni, Zhenhua

doi:10.1007/s11467-018-0785-z

Cited by 20 publications

(21 citation statements)

References 34 publications

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“…11,12 Song et al 24 demonstrated that the responsivity of MS 2 /CsPbBr 3 heterostructure was 4.4 A W −1 , which was far higher than that of organic−inorganic perovskites and their heterostructures due to the efficient charge transfers at MS 2 /CsPbBr 3 heterostructure. 25 Jiang et al 26,27 reported that MS 2 /CsPbBr 3 heterostructure strongly enhanced the photoluminescence quantum yield of CsPbBr 3 because MS 2 /CsPbBr 3 heterostructure demonstrates ultrafast interfacial energy transfer and interlayer excitons. Inspired by these, designing CsPbX 3 /MS 2 (M = Mo, W) heterostructures is an attractive way to improve the electrical and optical properties of CsPbX 3 perovskites.…”

Section: ■ Introductionmentioning

confidence: 99%

“…Such characters make them promising for optoelectronic applications. Recent studies have found that the responsivities and detectivities of MAPbI 3 photodetectors were improved to 60 mA W –1 and 10 12 Jones, respectively, by designing MoS 2 /MAPbI 3 and WS 2 /MAPbI 3 heterostructures. , Song et al demonstrated that the responsivity of MS 2 /CsPbBr 3 heterostructure was 4.4 A W –1 , which was far higher than that of organic–inorganic perovskites and their heterostructures due to the efficient charge transfers at MS 2 /CsPbBr 3 heterostructure . Jiang et al , reported that MS 2 /CsPbBr 3 heterostructure strongly enhanced the photoluminescence quantum yield of CsPbBr 3 because MS 2 /CsPbBr 3 heterostructure demonstrates ultrafast interfacial energy transfer and interlayer excitons.…”

Section: Introductionmentioning

confidence: 99%

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Theoretical Studies of Electronic and Optical Behaviors of All-Inorganic CsPbI₃ and Two-Dimensional MS₂ (M = Mo, W) Heterostructures

Lin

et al. 2019

J. Phys. Chem. C

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Two-dimensional transition-metal dichalcogenides are not only promising optoelectronic materials but also can improve the optoelectronic performances of perovskites by forming heterostructures. Here, the structural, electronic, and optical properties of four kinds of CsPbI 3 /MS 2 (M = Mo, W) heterostructures have been comprehensively investigated by density functional theory. No matter what the heterostructure structures, the electronic structure and excellent transport properties of both CsPbI 3 surface and monolayer MS 2 can be preserved in the CsPbI 3 /MS 2 heterostructures. Moreover, CsPbI 3 / MS 2 heterostructures show type-II band alignment with indirect band gaps and charge transfers, which separate electrons and holes spontaneously. The light absorptions of CsPbI 3 surfaces in the infrared, visible, and ultraviolet regions are enhanced upon forming heterostructures. Note that the performances of heterostructures are strongly dependent on the heterostructure structure. Pb−Iterminated CsPbI 3 /MS 2 heterostructures exhibit lower tunneling barriers and larger band offsets, which may lead to higher circuit voltages and lower dark currents, but they show lower stabilities compared with Cs−I-terminated CsPbI 3 /MS 2 heterostructures. Moreover, CsPbI 3 /MoS 2 heterostructures demonstrate higher electric and optical performances than those of CsPbI 3 /WS 2 heterostructures. Our findings provide a deep understanding of CsPbI 3 /MS 2 heterostructures and suggest an effective way to improve the performance of perovskite optoelectronic devices, such as radiation detection.

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Section: ■ Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Theoretical Studies of Electronic and Optical Behaviors of All-Inorganic CsPbI₃ and Two-Dimensional MS₂ (M = Mo, W) Heterostructures

Lin

et al. 2019

J. Phys. Chem. C

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“…Interestingly, some theoretical predictions state that only hole transport is allowed in 2D perovskite-TMD HSs and only in the case of a monolayer direct bandgap TMDs 155 , while the electron transport is blocked by the perovskite organic layer. But there are multiple experimental evidences that the electron transfer from the perovskite to TMD does occur resulting in the perovskite PL quenching 93,156 . Another evidence of the electron transfer from the perovskite to the TMD layer is the relative enhancement of the TMD trion emission 156,159,161 .…”

Section: Perovskite/tmd Heterostructuresmentioning

confidence: 99%

Perovskite-transition metal dichalcogenides heterostructures: recent advances and future perspectives

Elbanna¹,

Chaykun²,

Lekina³

et al. 2022

OES

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Transition metal dichalcogenides (TMDs) and perovskites are among the most attractive and widely investigated semiconductors in the recent decade. They are promising materials for various applications, such as photodetection, solar energy harvesting, light emission, and many others. Combining these materials to form heterostructures can enrich the already fascinating properties and bring up new phenomena and opportunities. Work in this field is growing rapidly in both fundamental studies and device applications. Here, we review the recent findings in the perovskite-TMD heterostructures and give our perspectives on the future development of this promising field. The fundamental properties of the perovskites, TMDs, and their heterostructures are discussed first, followed by a summary of the synthesis methods of the perovskites and TMDs and the approaches to obtain high-quality interfaces. Particular attention is paid to the TMD-perovskite heterostructures that have been applied in solar cells and photodetectors with notable performance improvement. Finally through our analysis, we propose an outline on further fundamental studies and the promising applications of perovskite-TMD heterostructures.

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“…To circumvent this limitation, decorating TMD monolayers with light-harvesting components that can absorb light and transfer photogenerated carriers to TMDs by charge , or energy transfer , have been extensively explored. To date, various semiconductor materials have been integrated with 2D TMDs such as colloidal quantum dots (QDs), ,− nanowires, microplate, layered semiconductor materials, ,, and films. , Among them, heterostructures by implementing lead halide perovskites of strong light absorption, long carrier diffusion, , and size/composition tunable optical property − have shown particularly exciting potentials in optoelectronic applications such as high-performance photodetectors ,− and ultrahigh-sensitivity transistors …”

Section: Introductionmentioning

confidence: 99%

“…In these perovskite/TMD heterostructures, charge or energy transfer after photoexcitation plays a critical role in dictating the designing principles and ultimate performance of optoelectronic devices. Many works have been devoted to investigating the charge/energy-transfer process from low-dimensional perovskite nanomaterials (e.g., zero-dimensional (0D) QDs, one-dimensional (1D) nanowire, 2D layered perovskites) to TMDs. ,,− ,− ,− By combining optical and device measurements, Wu et al have demonstrated a type II band alignment in CsPbBr x I 3– x QDs–MoS 2 0D–2D HS with efficient electron injection from CsPbBr x I 3– x to MoS 2 . In another study, Zhang and coauthors have shown a type I band alignment in CsPbBr 3 nanowire–MoS 2 1D–2D HS and observed energy transfer from CsPbBr 3 to MoS 2 with an efficiency of 71% .…”

Section: Introductionmentioning

confidence: 99%

Near-Unity-Efficiency Energy Transfer from Perovskite to Monolayer Semiconductor through Long-Range Migration and Asymmetric Interfacial Transfer

Zhang

Fang

et al. 2021

ACS Appl. Mater. Interfaces

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van der Waals heterostructures combining perovskites of strong light absorption with atomically thin two-dimensional (2D) transition-metal dichalcogenides (TMDs) hold great potential for light-harvesting and optoelectronic applications. However, current research studies integrating TMDs with low-dimensional perovskite nanomaterials generally suffer from poor carrier/energy transport and harnessing, stemming from poor interfacial interaction due to the nanostructured nature and ligands on surface/interface. To overcome the limitations, here, we report prototypical three-dimensional (3D)/2D perovskite/TMD heterostructures by combing highly smooth and ligand-free CsPbBr3 film with a WSe2 monolayer. We show that the energy transfer at interface occurs through asymmetric two-step charge-transfer process, with ultrafast hole transfer in ∼200 fs and subsequent electron transfer in ∼10 ps, driven by the asymmetric type I band alignment. The energy migration and transfer from CsPbBr3 film to WSe2 can be well described by a one-dimensional diffusion model with a carrier diffusion length of ∼500 nm in CsPbBr3 film. Thanks to the long-range carrier migration and ultrafast interfacial transfer, highly efficient (>90%) energy transfer to WSe2 can be achieved with CsPbBr3 film as thick as ∼180 nm, which can capture most of the light above its band gap. The efficient light and energy harvesting in perovskite/TMD 3D/2D heterostructures suggest great promise in optoelectronic and photonic devices.

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Interfacial charge transfer in WS2 monolayer/CsPbBr3 microplate heterostructure

Cited by 20 publications

References 34 publications

Theoretical Studies of Electronic and Optical Behaviors of All-Inorganic CsPbI₃ and Two-Dimensional MS₂ (M = Mo, W) Heterostructures

Theoretical Studies of Electronic and Optical Behaviors of All-Inorganic CsPbI₃ and Two-Dimensional MS₂ (M = Mo, W) Heterostructures

Perovskite-transition metal dichalcogenides heterostructures: recent advances and future perspectives

Near-Unity-Efficiency Energy Transfer from Perovskite to Monolayer Semiconductor through Long-Range Migration and Asymmetric Interfacial Transfer

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Interfacial charge transfer in WS2 monolayer/CsPbBr3 microplate heterostructure

Cited by 20 publications

References 34 publications

Theoretical Studies of Electronic and Optical Behaviors of All-Inorganic CsPbI3 and Two-Dimensional MS2 (M = Mo, W) Heterostructures

Theoretical Studies of Electronic and Optical Behaviors of All-Inorganic CsPbI3 and Two-Dimensional MS2 (M = Mo, W) Heterostructures

Perovskite-transition metal dichalcogenides heterostructures: recent advances and future perspectives

Near-Unity-Efficiency Energy Transfer from Perovskite to Monolayer Semiconductor through Long-Range Migration and Asymmetric Interfacial Transfer

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Theoretical Studies of Electronic and Optical Behaviors of All-Inorganic CsPbI₃ and Two-Dimensional MS₂ (M = Mo, W) Heterostructures

Theoretical Studies of Electronic and Optical Behaviors of All-Inorganic CsPbI₃ and Two-Dimensional MS₂ (M = Mo, W) Heterostructures