High-performance photodetectors based on two-dimensional perovskite crystals with alternating interlayer cations

Li, Yezhan; Lai, Zhengxun; Meng, You; Wang, Wei; Zhang, Yuxuan; Zhao, Xuwen; Yin, Dong; Xie, Pengshan; Quan, Quan; Yip, SenPo; Ho, Johnny C.

doi:10.1016/j.jmat.2023.05.003

Cited by 5 publications

(2 citation statements)

References 40 publications

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“…In recent years, the predominant use of metal-based materials for photodetector synthesis has become a common practice. Despite their widespread use, these photodetectors often fall short in terms of efficiency when it comes to light detection and response [4][5][6]. Notably, the development of infrared (IR) photodetectors has involved the utilization of CuO nanowires.…”

Section: Introductionmentioning

confidence: 99%

One pot synthesizing of cobalt (III) and (IV) oxides/polypyrrole nanocomposite for light sensing in wide optical range

Rabia,

Ben Gouider Trabelsi,

Alkallas

et al. 2024

Phys. Scr.

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A highly porous potato-shaped nanocomposite, Co(111) and Co(IV) oxide/polypyrrole (Co2O3-Co3O4/Ppy), is synthesized employing a one-pot procedure involving the slow oxidation of pyrrole using Co(NO3)2. The exceptional physical characteristics of this nanocomposite are accompanied by impressive optical properties, marked by a bandgap of 1.72 eV. Its absorbance spans across the UV, visible (Vis), and infrared (IR) regions, making it a promising candidate for optoelectronic applications such as photodetectors designed for light sensing within this extensive optical range that encompasses a substantial portion of the electromagnetic spectrum.This Co2O3-Co3O4/Ppy thin film photodetector is subjected to electrical testing under varying light conditions, leading to the determination of the photocurrent density (Jph) value of 0.26 mA.cm-2. When evaluated under different monochromatic light sources ranging from 340 to 730 nm, distinct Jph values are observed for each wavelength, reflecting the nanocomposite's ability to effectively interact with photons across this spectrum. The measured responsivity (R) and detectivity (D) values further underscore the photodetector's efficiency. At 340 nm, the R and D values stand at 1.22 mA.W-1 and 0.275x109 Jones, respectively. Similarly, at 730 nm, these values are 1.21 mA.W-1 and 0.270x109 Jones. The combination of these favorable findings, including cost-effectiveness and high stability, position the Co2O3-Co3O4/Ppy nanocomposite as an optimal choice for a wide range of industrial applications, attesting to its potential impact in the field.

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Section: Introductionmentioning

confidence: 99%

One pot synthesizing of cobalt (III) and (IV) oxides/polypyrrole nanocomposite for light sensing in wide optical range

Rabia,

Ben Gouider Trabelsi,

Alkallas

et al. 2024

Phys. Scr.

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“…To overcome these challenges, recent advancements have been made in the development of light sensors using metal oxides and nitrides. Despite this progress, these alternative materials have demonstrated limited efficiency [4,5].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of thin film solar cell based on CoO-CoS/P2-Amino-1-mercaptobenzene/polypyrrole with additional promising sensitivities to photons in a broad optical region

Madkhali,

Rabia

2024

Phys. Scr.

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The production of a thin-film solar cell device, employing CoO-CoS/P2-Amino-1-mercaptobenzene/polypyrrole (CoO-CoS-P2AMB/Ppy), showcases enhanced sensitivity across a broad optical spectrum. This achievement is realized through a one-pot polymerization process involving 2-Amino-1-mercaptobenzene, Co(NO3)2, and K2S2O8. Notably, the polymerization reaction incorporates the inclusion of a Ppy seeding layer into the solution.To comprehensively characterize the synthesized materials, an array of analytical tools is employed. Subsequently, the CoO-CoS-P2AMB/Ppy device undergoes rigorous testing under diverse light conditions, including darkness, white light, and monochromatic light. These conditions aim to assess the device's responsiveness to photons of varying energies, where the resulting current density (Jph) serves as an indicator of generated hot electrons and the overall efficiency of the fabricated device.At a potential of 2.0 V, the measured values for Jph and dark current (Jo) stand at 0.11 and 0.04 mA.cm-2, respectively. The solar cell characteristics are further evaluated through measured values for JSC (-0.01 µA.cm-2) and VOC (0.038 V), reflecting the device's performance under solar testing conditions.In addition to its solar cell attributes, the device exhibits light-sensing behavior, quantified through calculated photoresponsivity (R) and detectivity (D) values. These values, obtained under various monochromatic lights, amount to 0.49 mA.W-1 and 1.1x108 Jones, respectively.The exceptional performance of the CoO-CoS-P2AMB/Ppy thin-film solar cell device, coupled with its light-sensing capabilities, positions the device as a promising candidate for commercial applications. Its potential extends to the fabrication of cost-effective thin-film sensing devices, presenting opportunities for widespread utilization in various industries.

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Biphasic Interfacial Swimming Top‐Down Growth of Ruddlesden‒Popper Halide Perovskite Single‐Crystal Sheets with Few Defects

Zhang,

Wei,

Wang

et al. 2024

Advanced Optical Materials

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Ruddlesden‐Popper (RP) hybrid perovskites have the characteristics of controllable quantum well thickness, excellent stability, and good photoelectric performance. However, traditional space‐limited methods easily induce additional defects at the crystal interface. Herein, a novel swimming top‐down method is proposed for growing high‐quality perovskite single‐crystal sheets in a biphasic liquid–liquid n‐dodecane/γ‐butyrolactone (GBL) system. The (BA)2MAPb2I7 single‐crystal sheet exhibited the lowest defect density on the top surface because of interfacial features, including a flat biphasic confined interface, a large area for GBL molecule diffusion, and sufficient traction for swimming growth. As a typical result, (BA)2MAPb2I7 single‐crystal‐based photodetectors exhibit outstanding weak‐light photoelectric performance with a responsivity of 1.02 A W−1, an external quantum efficiency of 226.9%, and a detectivity of 8.7 × 1012 Jones; these values are 310%, 310%, and 700%, respectively, as high as those of photodetectors obtained by the antisolvent vapor‐assisted crystallization method.

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High-performance photodetectors based on two-dimensional perovskite crystals with alternating interlayer cations

Cited by 5 publications

References 40 publications

One pot synthesizing of cobalt (III) and (IV) oxides/polypyrrole nanocomposite for light sensing in wide optical range

One pot synthesizing of cobalt (III) and (IV) oxides/polypyrrole nanocomposite for light sensing in wide optical range

Fabrication of thin film solar cell based on CoO-CoS/P2-Amino-1-mercaptobenzene/polypyrrole with additional promising sensitivities to photons in a broad optical region

Biphasic Interfacial Swimming Top‐Down Growth of Ruddlesden‒Popper Halide Perovskite Single‐Crystal Sheets with Few Defects

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