Direct synthesis of high-quality perovskite nanocrystals on a flexible substrate and deterministic transfer

Wang, Yilun; Cheng, Xing; Yuan, Kai; Wan, Yi; Li, Pan; Deng, Yingping; Yu, Haoran; Xu, Xiaolong; Zeng, Yi; Xu, Wanjin; Li, Yanping; Ma, Ren‐Min; Watanabe, Kenji; Taniguchi, Takashi; Yu, Ye; Dai, Li‐Xin

doi:10.1016/j.scib.2018.11.014

Cited by 14 publications

(15 citation statements)

References 36 publications

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“…To conduct the tolerance study under proton irradiation (Figure 1a), high-quality CsPbBr 3 NPs were synthesized on polydimethylsiloxane (PDMS) substrates via a chemical vapor deposition (CVD) method as reported in our previous study (Figure 1b). 48 Then, the CsPbBr 3 NPs were transferred onto Si/SiO 2 substrates via an all-dry transfer method using PDMS as the stamp (inset of Figure 1b). The uniform color of each NP in the optical image indicates its uniform thickness.…”

Section: ■ Results and Discussionmentioning

confidence: 99%

Radiation-Resistant CsPbBr₃ Nanoplate-Based Lasers

Wang

et al. 2020

ACS Appl. Nano Mater.

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The use of nanoscale lasers in new space technologies can enable a variety of applications. Metal lead halide perovskites have emerged and been verified to possess many unique properties for optoelectronic applications, which are key elements for the space mission system. However, the basic knowledge of radiation damage of perovskite materials and the indepth experimental irradiation testing on their lasing properties are still lacking. Here, the performance of a CsPbBr 3 nanoplate (NP) laser is measured to be maintained after exposure to 150 keV proton beam with fluence up to 1 × 10 15 p/cm 2 , an extremely high level of collision that destroys CdS NPs with similar shapes and emission wavelengths. Lasing characteristics and carrier dynamics of the CsPbBr 3 and CdS NPs have been studied and compared in detail before and after proton irradiation with different beam fluences. Concurrently, simulation results manifest that negligible atomic displacement damage is caused by proton bombardment in CsPbBr 3 , ensuring its high resistance to proton irradiation. The findings of the high radiation resistance of the CsPbBr 3 NP lasers and the insights into the underlying mechanism are conceivably important, which might make recommendations for the development of perovskite coherent light sources for new space applications.

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Section: ■ Results and Discussionmentioning

confidence: 99%

Radiation-Resistant CsPbBr₃ Nanoplate-Based Lasers

Wang

et al. 2020

ACS Appl. Nano Mater.

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“…Conventionally, high-quality CsPbBr 3 NPs, with well-defined shapes, have been synthesized by the chemical vapor deposition (CVD) method on cleaved muscovite mica substrates via van der Waals epitaxy. , However, the hydrophilic mica substrate will absorb water molecules, which causes damage to the CsPbBr 3 NPs. , Moreover, the dry transfer method to detach the epitaxially grown CsPbBr 3 NPs from mica substrates is inefficient, because mica is also a layered material that is easy to cleave. Therefore, we directly synthesize CsPbBr 3 NPs on the viscoelastic polydimethylsiloxane (PDMS) substrate via a CVD method (see Supporting Information S1 and Methods). The as-synthesized NPs can be easily transferred onto an arbitrary substrate via an all-dry transfer method with the PDMS as a stamp (see Supporting Information S1).…”

Section: Resultsmentioning

confidence: 99%

“…19,20 Moreover, the dry transfer method to detach the epitaxially grown CsPbBr 3 NPs from mica substrates is inefficient, because mica is also a layered material that is easy to cleave. Therefore, we directly synthesize CsPbBr 3 NPs on the viscoelastic poly-dimethylsiloxane (PDMS) substrate via a CVD method 21 (see Supporting Information S1 and Methods). The as-synthesized NPs can be easily transferred onto an arbitrary substrate via an all-dry transfer method with the PDMS as a stamp (see Supporting Information S1).…”

Section: Resultsmentioning

confidence: 99%

Waterproof Cesium Lead Bromide Perovskite Lasers and Their Applications in Solution

Liu

et al. 2019

ACS Nano

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The many advantageous optoelectronic properties of lead halide perovskites have made them promising materials in both solar cells and light source applications. However, lead halide perovskites are soluble in polar solvents, which hinders their practical applications. Thus, the effective protection of perovskite against polar solvents is of great significance. Herein, we report a waterproof CsPbBr3 nanoplate (NP) laser protected by large-scale on-chip microprocess-compatible atomic layer deposition (ALD) Al2O3. The 50 nm Al2O3 coated CsPbBr3 NPs can continuously lase in water for over an hour and can still lase after being immersed in water for a month. Moreover, the lasing behaviors of the 20 nm Al2O3 coated CsPbBr3 NP, in the mixed solution of water and glycerine with the refractive index ranging from 1.33 to 1.47, are also studied. As the environmental refractive index increases, the NP laser goes through a mode selection process, showing single-mode (540.3 nm) to dual-mode and to single-mode (533.9 nm) lasing behavior, which is caused by mode competition resulting from the decrease of quality factor (Q factor) and the blue-shift of the material’s gain spectra. Besides, lasing thresholds of the CsPbBr3 NP increase with the environmental refractive index, which can be utilized for sensing with a measured sensitivity of 129.7 μJ cm–2 RIU–1 (per refractive index unit) (388.2 μJ cm–2 RIU–1) for the long (short)-wavelength lasing mode. Our work demonstrates that the ALD Al2O3 protection method can effectively protect CsPbBr3 against polar solvents, enhance the material’s stability, and enable perovskite’s practical applications in both on-chip integration and solvent systems.

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“…Reproduced with permission. [ 137 ] Copyright 2018, Elsevier B.V. e) Graphical representation of proposed perovskite‐metamaterial device consisting of a hybrid lead halide perovskite film spin coated on a TASR metamaterial structure. f) Measured terahertz transmission spectra for the TASR metamaterial structure showing the modulation of Fano resonance without and with the spin coated perovskite layer for varying powers of the optical photoexcitation pulse.…”

Section: Nanostructured‐perovskite‐based Novel Device Applicationsmentioning

confidence: 99%

“…As shown in Figure 7d, Ye and co‐workers utilized the fiber to guide the excitation laser light to the perovskite and demonstrated an integrated perovskite laser. [ 137 ]…”

Section: Nanostructured‐perovskite‐based Novel Device Applicationsmentioning

confidence: 99%

Micro‐ and Nanostructured Lead Halide Perovskites: From Materials to Integrations and Devices

Xing²,

et al. 2020

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In the past decade, lead halide perovskites have been intensively explored due to their promising future in photovoltaics. Owing to their remarkable material properties such as solution processability, nice defect tolerance, broad bandgap tunability, high quantum yields, large refractive index, and strong nonlinear effects, this family of materials has also shown advantages in many other optoelectronic devices including microlasers, photodetectors, waveguides, and metasurfaces. Very recently, the stability of perovskite devices has been improved with the optimization of synthesis methods and device architectures. It is widely accepted that it is the time to integrate all the perovskite devices into a real system. However, for integrated photonic circuits, the shapes and distributions of chemically synthesized perovskites are quite random and not suitable for integration. Consequently, controlled synthesis and the top‐down fabrication process are highly desirable to break the barriers. Herein, the developments of patterning and integration techniques for halide perovskites, as well as the structure/function relationships, are systematically reviewed. The recent progress in the study of optical responses originating from nanostructured perovskites is also presented. Lastly, the challenges and perspective for nanostructured‐perovskite devices are discussed.

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Direct synthesis of high-quality perovskite nanocrystals on a flexible substrate and deterministic transfer

Cited by 14 publications

References 36 publications

Radiation-Resistant CsPbBr₃ Nanoplate-Based Lasers

Radiation-Resistant CsPbBr₃ Nanoplate-Based Lasers

Waterproof Cesium Lead Bromide Perovskite Lasers and Their Applications in Solution

Micro‐ and Nanostructured Lead Halide Perovskites: From Materials to Integrations and Devices

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Direct synthesis of high-quality perovskite nanocrystals on a flexible substrate and deterministic transfer

Cited by 14 publications

References 36 publications

Radiation-Resistant CsPbBr3 Nanoplate-Based Lasers

Radiation-Resistant CsPbBr3 Nanoplate-Based Lasers

Waterproof Cesium Lead Bromide Perovskite Lasers and Their Applications in Solution

Micro‐ and Nanostructured Lead Halide Perovskites: From Materials to Integrations and Devices

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Radiation-Resistant CsPbBr₃ Nanoplate-Based Lasers

Radiation-Resistant CsPbBr₃ Nanoplate-Based Lasers