Titania:Graphdiyne nanocomposites for high-performance deep ultraviolet photodetectors based on mixed-phase MgZnO

Li, Yan; Kuang, Dan; Gao, Yanfei; Cheng, Jun; Li, Xuyang; Guo, Jian; Yu, Zhinong

doi:10.1016/j.jallcom.2020.153882

Cited by 27 publications

(19 citation statements)

References 49 publications

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“…18D) based on TiO2:GDY nanocomposites [157]. The published results proved that the considered composites were suitable as UV photodetectors, disclosing an outstanding optical response of 76 mAW −1 and a rise/decay time of 3.5/2.7s.…”

Section: Optoelectronic Propertiesmentioning

confidence: 66%

“…The GDY:ZnO/ZnO system manifested an excellent optical response of 1260 A W −1 , with a rise/decay time as short as 6.1/2.1 s. The device built only on zinc oxide nanoparticles held a responsivity of 174 A W −1 and a much more extended rise/decay time (32.1/28.7 s). Li et al proposed deep UV photodetectors ( Figure 18 D) based on TiO2:GDY nanocomposites [ 157 ]. The published results proved that the considered composites were suitable as UV photodetectors, disclosing an outstanding optical response of 76 mAW −1 and a rise/decay time of 3.5/2.7 s. The cited examples show the promising and efficient properties of graphyne derivatives.…”

Section: Electronic Propertiesmentioning

confidence: 99%

Section: Figurementioning

confidence: 99%

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Developments in Synthesis and Potential Electronic and Magnetic Applications of Pristine and Doped Graphynes

et al. 2021

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Doping and its consequences on the electronic features, optoelectronic features, and magnetism of graphynes (GYs) are reviewed in this work. First, synthetic strategies that consider numerous chemically and dimensionally different structures are discussed. Simultaneous or subsequent doping with heteroatoms, controlling dimensions, applying strain, and applying external electric fields can serve as effective ways to modulate the band structure of these new sp2/sp allotropes of carbon. The fundamental band gap is crucially dependent on morphology, with low dimensional GYs displaying a broader band gap than their bulk counterparts. Accurately chosen precursors and synthesis conditions ensure complete control of the morphological, electronic, and physicochemical properties of resulting GY sheets as well as the distribution of dopants deposited on GY surfaces. The uniform and quantitative inclusion of non-metallic (B, Cl, N, O, or P) and metallic (Fe, Co, or Ni) elements into graphyne derivatives were theoretically and experimentally studied, which improved their electronic and magnetic properties as row systems or in heterojunction. The effect of heteroatoms associated with metallic impurities on the magnetic properties of GYs was investigated. Finally, the flexibility of doped GYs’ electronic and magnetic features recommends them for new electronic and optoelectronic applications.

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Section: Optoelectronic Propertiesmentioning

confidence: 66%

Section: Electronic Propertiesmentioning

confidence: 99%

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Developments in Synthesis and Potential Electronic and Magnetic Applications of Pristine and Doped Graphynes

et al. 2021

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“…Above all, graphdiyne could enhance the carrier exchange process and hence improve the figure of merit of these photodetector devices. However, it is urgently necessary to determine that graphdiyne only serves as an additive in these devices. ,, In theory, the tunable bandgaps and multiple excitonic transitions of graphdiyne should make it a promising photoactive material. Recently, our group reported that graphdiyne served as a photoactive material in a flexible photoelectrochemical photodetector .…”

Section: Optoelectronicsmentioning

confidence: 99%

Artificial Carbon Graphdiyne: Status and Challenges in Nonlinear Photonic and Optoelectronic Applications

Wang

Zhang

et al. 2020

ACS Appl. Mater. Interfaces

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The creative integration of sp-hybridized carbon atoms into artificial carbon graphdiyne has led to graphdiyne with superior properties in terms of uniformly distributed pores, ambipolar carrier transport, natural bandgap, and broadband absorption. Consequently, graphdiyne, regarded as a promising carbon material, has garnered particular attention in light−matter interactions. Light− matter interactions play an important role in optical information technology and meet the increasing demand for various energy sources. Herein, the status and challenges in nonlinear photonic and optoelectronic applications of graphdiyne, which are still in the infancy stage, are summarized. Furthermore, the bottleneck and perspective of graphdiyne in these aspects are discussed. It is therefore anticipated that this review could promote the development of graphdiyne in photonic and optoelectronic fields.

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“…The study on wide band gap semiconductor (WBSC) materials (AlGaN, diamond, SiC, Ga 2 O 3 , MgZnO, etc.) that are used in UV photodetectors has emerged during past 20 years. − Compared with other materials, ternary alloy MgZnO materials with different Mg compositions could detect UV light in a wider range from 220 to 380 nm, , and the UV response of MgZnO-based detectors are relative higher at both near UV and solar-blind UV light. , Recently, mixed-phase MgZnO-based UV detector have shown a high response and a small dark current at both near and deep UV light, ,− so the mixed-phase MgZnO thin film is an ideal material for high-performance UV detectors at both solar-blind UV (220–280 nm) and visible-blind UV (300 nm–380 nm) light.…”

Section: Introductionmentioning

confidence: 99%

Great Enhancement Effect of 20–40 nm Ag NPs on Solar-Blind UV Response of the Mixed-Phase MgZnO Detector

Han

Xia

et al. 2021

ACS Omega

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High-performance solar-blind UV detector with high response and fast speed is needed in multiple types of areas, which is hard to achieve in one device with a simple structure and device fabrication process. Here, the effects of Ag nanoparticles (NPs) with different sizes on UV response characteristics of the device are studied, the Ag NPs with different sizes that are made from a simple vacuum anneal method. Ag NPs with different sizes could modulate the peak response position of the mixed-phase MgZnO detector from near UV range (350 nm) to deep UV range (235 nm), and the enhancement effect of the Ag NPs on the UV response differs much with the crystal structure and the basic UV response of the MgZnO thin film. When high density 20–40 nm Ag NPs is induced, the deep UV (235 nm) response of the mixed-phase MgZnO detector is increased by 226 times, the I uv / I dark ratio of the modified device is increased by 17.5 times. The slight enhancement in UV light intensity from 20 to 40 nm Ag NPs induces multiple tunnel breakdown phenomena within the mixed-phase MgZnO thin film, which is the main reason for the abnormal great enhancement effect on deep UV response of the device, so the recovery speed of the modified device is not influenced. Therefore, Ag NPs with different sizes could effectively modulate the UV response peak position of mixed-phase MgZnO thin films, and the introduction of Ag NPs with high density and small size is a simple way to greatly increase the sensitivity of the mixed-phase MgZnO detector at deep UV light without decreasing the device speed.

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Titania:Graphdiyne nanocomposites for high-performance deep ultraviolet photodetectors based on mixed-phase MgZnO

Cited by 27 publications

References 49 publications

Developments in Synthesis and Potential Electronic and Magnetic Applications of Pristine and Doped Graphynes

Developments in Synthesis and Potential Electronic and Magnetic Applications of Pristine and Doped Graphynes

Artificial Carbon Graphdiyne: Status and Challenges in Nonlinear Photonic and Optoelectronic Applications

Great Enhancement Effect of 20–40 nm Ag NPs on Solar-Blind UV Response of the Mixed-Phase MgZnO Detector

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