Creation of Periodical Antiparallel Domain Structure in Lithium Niobate Crystals During Growth Process

Ghambaryan, I. A.; Guo, Ruyan; Hovsepyan, Roman; Poghosyan, Armen; Vardanyan, E. S.; Lazaryan, V. G.

doi:10.1080/713931706

Ferroelectrics Letters Section

2003

DOI: 10.1080/713931706

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Creation of Periodical Antiparallel Domain Structure in Lithium Niobate Crystals During Growth Process

I. A. Ghambaryan

Ruyan Guo²,

Roman Hovsepyan

et al.

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“…The Curie temperature is as high as 1210 °C. [21][22][23][24] The z-cut LiNbO 3 is utilized to adjust the carrier concentration, mobility, and bandgap of 2D materials to construct ferroelectric field-effect transistors. [11] Gorecki et al demonstrated a graphene all-optical control device based on an Fe:LiNbO 3 substrate.…”

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Broadband, High‐Sensitivity Graphene Photodetector Based on Ferroelectric Polarization of Lithium Niobate

Guan

Hong

Wang

et al. 2021

Advanced Optical Materials

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2D graphene has attracted extensive attention as a promising candidate for high‐performance photodetectors because of its superior optoelectronic properties. However, the realization of high‐sensitivity broadband graphene photodetectors remains a challenge. Lithium niobate (LiNbO3) has the advantages of spontaneous polarization, high dielectric constant, and high voltage electric coefficient, and it can improve the photoelectric detection characteristics of graphene by polarized doping. In this work, n‐ and p‐doping of graphene is demonstrated at the same time with the help of local ferroelectric polarization of x‐cut LiNbO3. This high‐sensitivity and broadband p–n junction photodetector shows a wide detection range of 405 to 2000 nm, a responsivity of ≈2.92 × 106 A W−1 at an incident power of 24 pW (λ = 1064 nm), and a high detectivity of ≈8.65 × 1014 Jones. In particular, a fast rise/decay time of ≈23 ms/≈23 ms is achieved. The graphene‐based LiNbO3 (bulk) photodetector shows higher responsivity, and the graphene‐based LiNbO3 (film) photodetector a faster response time. This work not only deepens and expands the basic research on 2D materials and ferroelectric materials, but also demonstrates the great potential of doped graphene materials for high‐performance photodetection.

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mentioning

confidence: 99%

Broadband, High‐Sensitivity Graphene Photodetector Based on Ferroelectric Polarization of Lithium Niobate

Guan

Hong

Wang

et al. 2021

Advanced Optical Materials

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Performance of LiTaO3 Crystals and Thin Films and Their Application

Xiao

Liang

et al. 2023

Crystals

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Lithium tantalate (LiTaO3, or LT) crystal is widely used in optical applications, infrared detection, and acoustic surface wave devices because of its excellent piezoelectric, pyroelectric, and nonlinear optical properties. In this paper, we discuss the defect structure of LT; the preparation method for LT; the influence of doping on LT; and LT’s application in optical, acoustic, and electrical devices. We mainly analyzed the structure and physical properties of LT crystal, the preparation of LT crystal and LT thin films, the periodic polarization of LT crystal, the reduction of LT wafers, and the application potential of LT crystals in lasers and acoustic surface filters according to the most recent research. We also provide an overview of future research directions for LT in the fields of acoustics, optics, and other fields. The applications of LT in 5G, 6G, SAW filters, nonlinear optical devices, and waveguides are expected to provide additional breakthroughs.

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Broadband, Polarization-Sensitive, and Self-Powered High-Performance Photodetection of Hetero-Integrated MoS ₂ on Lithium Niobate

et al. 2023

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High-performance photodetectors hold promising potential in optical communication and imaging systems. However, conventional counterparts are suffering narrow detection range, high power consumption, and poor polarization sensitivity. Characteristics originating from switchable polarization in ferroelectrics can be used to optimize the photo-to-electric procedure and improve the photodetection performance. In this regard, we constructed a configuration by integrating 2-dimensional molybdenum disulfide (MoS 2 ) with ferroelectric lithium niobate (LiNbO 3 ), resulting in the MoS 2 /LiNbO 3 heterostructured photodetector. Benefiting from the pyroelectric effect of LiNbO 3 , the limitation of bandgap on the detection range can be broken, thus broadening the response band of the detector to 365 to 1,064 nm, as well as enabling the self-powered characteristic. Meanwhile, high carrier mobility and decent light absorbance of MoS 2 introduce robust light-matter interactions with the underlying LiNbO 3 , leading to ultrafast rise/fall times of ≈150 μs/250 μs and switching ratios of up to ≈190. Moreover, the highest responsivity, specific detectivity, and external quantum efficiency achieved were 17.3 A·W −1 , 4.3 × 10 11 Jones, and 4,645.78%, respectively. Furthermore, because of the anisotropy of the spontaneous-polarized LiNbO 3 substrate, the photocurrent of the device achieved a dichroic ratio of 7.42, comparing favorably to most MoS 2 -based photodetectors. This work demonstrates the integration potential between ferroelectric LiNbO 3 and 2-dimensional materials for high-performance photodetection.

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Creation of Periodical Antiparallel Domain Structure in Lithium Niobate Crystals During Growth Process

Cited by 3 publications

References 0 publications

Broadband, High‐Sensitivity Graphene Photodetector Based on Ferroelectric Polarization of Lithium Niobate

Broadband, High‐Sensitivity Graphene Photodetector Based on Ferroelectric Polarization of Lithium Niobate

Performance of LiTaO3 Crystals and Thin Films and Their Application

Broadband, Polarization-Sensitive, and Self-Powered High-Performance Photodetection of Hetero-Integrated MoS ₂ on Lithium Niobate

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Creation of Periodical Antiparallel Domain Structure in Lithium Niobate Crystals During Growth Process

Cited by 3 publications

References 0 publications

Broadband, High‐Sensitivity Graphene Photodetector Based on Ferroelectric Polarization of Lithium Niobate

Broadband, High‐Sensitivity Graphene Photodetector Based on Ferroelectric Polarization of Lithium Niobate

Performance of LiTaO3 Crystals and Thin Films and Their Application

Broadband, Polarization-Sensitive, and Self-Powered High-Performance Photodetection of Hetero-Integrated MoS 2 on Lithium Niobate

Contact Info

Product

Resources

About

Broadband, Polarization-Sensitive, and Self-Powered High-Performance Photodetection of Hetero-Integrated MoS ₂ on Lithium Niobate