Hetero-integrated MoS2/CsPbBr3 photodetector with enhanced performance via combinational modulation of grain boundary passivation and interfacial carrier separation

Zhang, Yan; Wu, Chengyun; Zhou, Xin; Li, Junchun; Tao, Xuyong; Liu, Boyan; Chang, Yajing; Tong, Guoqing; Jiang, Yang

doi:10.1016/j.mtphys.2023.101179

Cited by 12 publications

(3 citation statements)

References 40 publications

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“…13,14 The optical and electronic features of CsPbBr 3 , such as an adjustable band gap, extensive carrier diffusion, and a broad absorption profile, make it a significant material. 15,16 While perovskite quantum dots are often studied for device performance, understanding the optoelectronic properties of CsPbBr 3 single crystals (SCs) provides a more authentic representation. 17,18 CsPbBr 3 SCs not only excel as photodetectors but also exhibit superior stability against high-energy particles and radiation due to their lack of organic components and high atomic number.…”

Section: Introductionmentioning

confidence: 99%

Growth methods' effect on the physical characteristics of CsPbBr₃ single crystal

Bechir,

Alresheedi

2024

Phys. Chem. Chem. Phys.

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Section: Introductionmentioning

confidence: 99%

Growth methods' effect on the physical characteristics of CsPbBr₃ single crystal

Bechir,

Alresheedi

2024

Phys. Chem. Chem. Phys.

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“…Perovskites having high carrier mobility, strong light absorption, and small exciton binding energy can be a better option to be integrated with the 2D materials . Although TMDC/perovskite has proven to be an ideal candidate as an optoelectronic material, there are few reports on MoS 2 /perovskite-based photodetectors. , MoS 2 /CsPbBr 3 has been utilized and studied by different groups as high-performance photodetectors. ,, …”

Section: Introductionmentioning

confidence: 99%

“…8 Although TMDC/perovskite 9 has proven to be an ideal candidate as an optoelectronic material, there are few reports on MoS 2 / perovskite-based photodetectors. 10,11 MoS 2 /CsPbBr 3 has been utilized and studied by different groups as high-performance photodetectors. 10,12,13 Lead halide perovskites in spite of having exceptional characteristics such as high photoluminescence quantum yields, sharp emission peaks, and easily adjustable band gaps have limitations due to their instability and the environmental and health hazards posed by lead.…”

Section: ■ Introductionmentioning

confidence: 99%

High-Performance Broadband Self-Driven Photodetector Based on MoS₂/Cs₂CuBr₄ Heterojunction

Pramanik,

Bera,

Karmakar

et al. 2024

ACS Appl. Mater. Interfaces

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Few-layer transition metal dichalcogenides and perovskites are both promising materials in high-performance optoelectronic devices. Here, we developed a self-driven photodetector by creating a heterojunction between few-layer MoS 2 and leadfree perovskite Cs 2 CuBr 4 . The detector shows a unique property of very high sensitivity in a broad spectral range of 400 to 800 nm with response speed in a millisecond order. Current−voltage characteristics of the heterojunction device show rectifying behavior, in contrast to the ohmic behavior of the MoS 2 -based device. The rectifying behavior is attributed to the type II band alignment of the MoS 2 /Cs 2 CuBr 4 heterojunction. The device shows a broadband (400 to 800 nm) photodetection with very high responsivity reaching up to 2.8 × 10 4 A/W and detectivity of 1.6 × 10 11 Jones at a bias voltage of 3 V. The detector can also operate in self-bias mode with sufficient response. The photocurrent, photoresponsivity, detectivity, and external quantum efficiency of the device are found to be dependent on the illumination power density. The response time of the device is found to be ∼32 and ∼79 ms during the rise and fall of the photocurrent. The work proposes a MoS 2 /Cs 2 CuBr 4 heterostructure to be a promising candidate for cost-effective, high-performance photodetector.

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Hydrolysis Reaction‐Induced Phase Regulation of Sb‐doped Zero‐Dimensional Perovskite Cs–In–Cl Nanocrystals for Optoelectronic and Information Encryption Applications

Li,

Liu,

Tong

et al. 2024

Adv Funct Materials

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Phase‐controlled synthesis of all‐inorganic perovskite nanocrystals (NCs) has attracted extensive attention for optoelectronic applications. However, H2O, often considered an unfavorable factor, has not been found to influence the resulting phase composition. Herein, the hydrolysis reaction‐induced phase regulation of 0D perovskite Cs–In–Cl: Sb NCs by manipulating the H2O addition is reported. Specifically, Cs–In–Cl: Sb crystallizes as Cs3InCl6: Sb in the absence of H2O addition. In contrast, the addition of H2O triggers the hydrolysis of the injected chlorine source (phenylphosphonic dichloride, PhPOCl2), resulting in an increased concentration of Cl− ions and subsequently promoting the formation of Cs4InCl7: Sb NCs. Moreover, the hydrogen bonds formed between isopropanol (IPA) and H2O/oleic acid (OA)/oleylamine (OAm) mitigate the immiscibility between the 1‐octadecene (ODE)/OA/OAm mixture and H2O, which facilitates the passivation of OA/OAm on the Cs4InCl7: Sb NCs. Additionally, it is demonstrated that a reversible phase transition between Cs4InCl7: Sb and Cs3InCl6: Sb can be achieved by heating–cooling cycles. Furthermore, the application for white light‐emitting diodes, information encryption, and fluorescent composite films based on Cs4InCl7: Sb NCs is showcased. This work not only paves a new strategy to regulate the phase composition of perovskites but also introduces a novel fluorescent material of Cs4InCl7: Sb for multifunctional applications.

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Hetero-integrated MoS2/CsPbBr3 photodetector with enhanced performance via combinational modulation of grain boundary passivation and interfacial carrier separation

Cited by 12 publications

References 40 publications

Growth methods' effect on the physical characteristics of CsPbBr₃ single crystal

Growth methods' effect on the physical characteristics of CsPbBr₃ single crystal

High-Performance Broadband Self-Driven Photodetector Based on MoS₂/Cs₂CuBr₄ Heterojunction

Hydrolysis Reaction‐Induced Phase Regulation of Sb‐doped Zero‐Dimensional Perovskite Cs–In–Cl Nanocrystals for Optoelectronic and Information Encryption Applications

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Hetero-integrated MoS2/CsPbBr3 photodetector with enhanced performance via combinational modulation of grain boundary passivation and interfacial carrier separation

Cited by 12 publications

References 40 publications

Growth methods' effect on the physical characteristics of CsPbBr3 single crystal

Growth methods' effect on the physical characteristics of CsPbBr3 single crystal

High-Performance Broadband Self-Driven Photodetector Based on MoS2/Cs2CuBr4 Heterojunction

Hydrolysis Reaction‐Induced Phase Regulation of Sb‐doped Zero‐Dimensional Perovskite Cs–In–Cl Nanocrystals for Optoelectronic and Information Encryption Applications

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Product

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Growth methods' effect on the physical characteristics of CsPbBr₃ single crystal

Growth methods' effect on the physical characteristics of CsPbBr₃ single crystal

High-Performance Broadband Self-Driven Photodetector Based on MoS₂/Cs₂CuBr₄ Heterojunction