2D Ternary Chalcogenides

Gao, Ting; Zhang, Qi; Li, Liang; Zhou, Xing; Li, Leigang; Li, Huiqiao; Zhai, Tianyou

doi:10.1002/adom.201800058

Cited by 133 publications

(101 citation statements)

References 167 publications

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“…Compared to single or binary element materials, the added new element in ternary materials can tune their physical properties for more applications by changing the compositions. In addition, ternary chalcogenides have bandgaps in the range of 1.3–3.5 eV, allowing them to be better used at visible wavelengths, which exactly coincides the range of SERS detection. Although we cannot judge their SERS potential merely by the bandgaps.…”

Section: Introductionmentioning

confidence: 81%

Alloy Engineering in Few‐Layer Manganese Phosphorus Trichalcogenides for Surface‐Enhanced Raman Scattering

Hou

Zhang

et al. 2020

Adv Funct Materials

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Manganese phosphorus trichalcogenides are widely used in the field of photocatalysis and magnetic studies due to their broadband gaps. Herein, an alloy engineering method for the few‐layer manganese phosphorus trichalcogenides (MnPS3–xSex, 0 ≤ x ≤ 3) in surface‐enhanced Raman scattering (SERS) is reported. A new strategy, with the coupling of exciton resonance (µex) and photoinduced charge transfer (PICT), is applied to screen out materials for SERS enhancement. According to the calculation of density functional theory, the bandgap of manganese phosphorus trichalcogenides (MnPS3) can be adjusted to match the band energy of Rhodamine 6G molecules by alloy engineering. Furthermore, a series of few‐layer MnPS3–xSex (0 ≤ x ≤ 3) are fabricated to study the PICT‐induced SERS behavior under resonance excitation. The good performance with a detection limit down to 10−9 m indicates that the synergistic resonances between µex and PICT are crucial to the enhancement.

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Section: Introductionmentioning

confidence: 81%

Alloy Engineering in Few‐Layer Manganese Phosphorus Trichalcogenides for Surface‐Enhanced Raman Scattering

Hou

Zhang

et al. 2020

Adv Funct Materials

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“…Recently, 2D ternary materials have aroused a great research interest in many fields due to the adjustable physical properties by means of stoichiometric alteration . Such emerging 2D ternary materials also exhibit outstanding properties in IR detection .…”

Section: Individual 2d Metal Chalcogenides For Ir Photodetectionmentioning

confidence: 99%

2D Metal Chalcogenides for IR Photodetection

Wang

Zhang

Gao

et al. 2019

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Infrared (IR) photodetectors are finding diverse applications in imaging, information communication, military, etc. 2D metal chalcogenides (2DMCs) have attracted increasing interest in view of their unique structures and extraordinary physical properties. They have demonstrated outstanding IR detection performance including high responsivity and detectivity, high on/off ratio, fast response rate, stable room temperature operability, and good mechanical flexibility, which has opened up a new prospect in next‐generation IR photodetectors. This Review presents a comprehensive summary of recent progress in advanced IR photodetectors based on 2DMCs. The rationale of the photodetectors containing photocurrent generation mechanisms and performance parameters are briefly introduced. The device performances of 2DMCs‐based IR photodetectors are also systematically summarized, and some representative achievements are highlighted as well. Finally, conclusions and outlooks are delivered as a guideline for this thriving field.

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“…Hitherto, some popular 2D materials, such as graphene and transition metal dichalcogenides, have been widely investigated for many years and the research enthusiasm for these 2D elements and binary compounds is still maintained . Recently, the investigation of ternary layered compounds with 2D feature has emerged . Compared to 2D elements and binary compounds, ternary layered compounds possess more tunability for physical and chemical properties due to more element species .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Large‐Area Atomically Thin BiOI Crystals with Highly Sensitive and Controllable Photodetection

Zeng

Feng

et al. 2019

Adv Funct Materials

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Compared to the most studied 2D elements and binary compounds, ternary layered compounds with more adjustable physical and chemical properties have exhibited potential applications in electronic and optoelectronic devices. Here, 2D ternary layered BiOI crystals are synthesized first with a domain size up to 100 µm via space-confined chemical vapor deposition. The photodetectors based on the as-grown BiOI nanosheets demonstrate high sensitivity to 473 nm light. The I on /I off ratio and detectivity of BiOI photodetectors can reach up to 1 × 10 5 and 8.2 × 10 11 Jones at 473 nm, respectively. Particularly, the contact and dark current of the photodetectors can be controlled by 254 nm ultraviolet light irradiation due to the introduction of oxygen vacancies. The facile synthesis of large-area atomically thin BiOI and its controllable performance by ultraviolet light irradiation suggest that 2D BiOI crystal is a promising material for fundamental investigations and optoelectronic applications.

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2D Ternary Chalcogenides

Cited by 133 publications

References 167 publications

Alloy Engineering in Few‐Layer Manganese Phosphorus Trichalcogenides for Surface‐Enhanced Raman Scattering

Alloy Engineering in Few‐Layer Manganese Phosphorus Trichalcogenides for Surface‐Enhanced Raman Scattering

2D Metal Chalcogenides for IR Photodetection

Synthesis of Large‐Area Atomically Thin BiOI Crystals with Highly Sensitive and Controllable Photodetection

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