High-performance polarization-sensitive photodetector based on a few-layered PdSe2 nanosheet

Zhong, Jiahong; Yu, Juan; Cao, Lingkai; Zeng, Cheng; Ding, Junnan; Cong, Chunxiao; Liu, Zongwen; Liu, Yanping

doi:10.1007/s12274-020-2804-y

Cited by 71 publications

(51 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Notably, this low-symmetry structure offers new characteristics for in-plane anisotropy in optics and electronics [16,17]. For example, PdSe 2 possesses a strong linear dichroism ratio, up to 1.9, which can act as a high polarization-sensitive photodetector [18,19]. Notably, both chemical vapor deposition (CVD) grown and exfoliated PdSe 2 exhibit extremely high air quality stability and device performance stability, which provides an excellent opportunity for future large-scale electronic device applications [20,21].…”

Section: Introductionmentioning

confidence: 99%

In-Plane Anisotropic Thermal Conductivity of Low-Symmetry PdSe2

Chen

Zhang

et al. 2021

Sustainability

View full text Add to dashboard Cite

Low-symmetry two-dimensional (2D) materials have exhibited novel anisotropic properties in optics, electronics, and mechanics. Such characteristics have opened up new avenues for fundamental research on nano-electronic devices. In-plane thermal conductivity plays a pivotal role in the electronic performance of devices. This article reports a systematic study of the in-plane anisotropic thermal conductivity of PdSe2 with a pentagonal, low-symmetry structure. An in-plane anisotropic ratio up to 1.42 was observed by the micro-Raman thermometry method. In the Raman scattering spectrum, we extracted a frequency shift from the mode with the most sensitivity to temperature. The anisotropic thermal conductivity was deduced by analyzing the heat diffusion equations of suspended PdSe2 films. With the increase in thickness, the anisotropy ratio decreased gradually because the thermal conductivity in the x-direction increased faster than in the y-direction. The anisotropic thermal conductivity provides thermal management strategies for the next generation of nano-electronic devices based on PdSe2.

show abstract

Section: Introductionmentioning

confidence: 99%

In-Plane Anisotropic Thermal Conductivity of Low-Symmetry PdSe2

Chen

Zhang

et al. 2021

Sustainability

View full text Add to dashboard Cite

show abstract

“…The film selenized at 300 ℃ shows the highest hole mobil-ity of 48.5 cm 2 • V -1 • s -1 and the mobility decreases with further increase of the selenization temperature. The mobility of PdSe2 thin films obtained by vacuum selenization process here is much higher than that of the PdSe2 films fabricated by traditional mechanical exfoliation method [13,18,[35][36] , as listed in Table 1.…”

Section: Effects Of Selenization Temperature On Electrical Transport Propertymentioning

confidence: 74%

Electronic Property of PdSe₂ Thin Films Fabricated by Post-selenization of Pd Films

Wang¹,

Zhang²,

Chen³

et al. 2021

Journal of Inorganic Materials

View full text Add to dashboard Cite

At present, the approaches to fabricate PdSe2 thin films mainly focus on mechanical exfoliation and chemical vapor deposition. In this study, we report a simple and efficient method to fabricate PdSe 2 thin films on SiO2/Si substrates. First, a Pd metal layer was deposited on a SiO2/Si substrate using magnetron sputtering. Then the PdSe2 thin film was obtained by a selenization of the Pd layer at certain temperatures in a vacuum quartz ampule containing Se powder. According to the cross-sectional high-resolution transmission electron microscopy (HRTEM) image, the as-grown PdSe2 thin film has an average thickness of approximately 30 nm. The correlation between selenization temperature and electronic transport properties of PdSe2 thin films has been investigated. PdSe2 thin films with a hole carrier concentration of ~10 18 cm -3 and a mobility of ~48.5 cm 2 • V -1 • s -1 have been realized at a low selenization temperature of 300 ℃. It is worth noting that the mobility obtained by the vacuum selenization is superior to that of the p-type PdSe2 thin films fabricated by mechanical exfoliation from bulk PdSe2 single crystals. In addition, a relatively large room-temperature magnetoresistance (MR) of 12% was achieved for the PdSe2 thin films selenized at 300 ℃. With the increase in the selenization temperature from 300 ℃, mobility and magnetoresistance decrease due to the evaporation of Se element at high temperatures. Our work demonstrates that the one-step selenization process is a facile and efficient approach to synthesize PdSe2 films, which could actually be used to prepare PdSe2 films in a large scale and may have potential applications for next-generation electronic and magneto-electronic devices.

show abstract

“…The morphology and structure of PdSe 2 have shown satisfactory property–structure correlation. Indeed, the anisotropic orientation of the PdSe 2 domains results in polarized light detection [ 29 ]. The strain engineering influences the phonon response, which demonstrates its potential in the field of flexible electronics.…”

Section: Structure and Properties Of Pdsementioning

confidence: 99%

“…Besides, PtSe 2 has a large photoresponse at a wide spectral band ranging from 200 to 1550 nm [ 7 ]. Then, the anisotropic compounds such as PdSe 2 can be used for polarized sensitive photoelectric detection [ 29 ]. Therefore, the coupling of PdSe 2 and other 2D materials may cover the light detection of a broad spectral range.…”

Section: Pdse 2 For Optoelectronics and Opticsmentioning

confidence: 99%

Applications of 2D-Layered Palladium Diselenide and Its van der Waals Heterostructures in Electronics and Optoelectronics

et al. 2021

View full text Add to dashboard Cite

The rapid development of two-dimensional (2D) transition-metal dichalcogenides has been possible owing to their special structures and remarkable properties. In particular, palladium diselenide (PdSe2) with a novel pentagonal structure and unique physical characteristics have recently attracted extensive research interest. Consequently, tremendous research progress has been achieved regarding the physics, chemistry, and electronics of PdSe2. Accordingly, in this review, we recapitulate and summarize the most recent research on PdSe2, including its structure, properties, synthesis, and applications. First, a mechanical exfoliation method to obtain PdSe2 nanosheets is introduced, and large-area synthesis strategies are explained with respect to chemical vapor deposition and metal selenization. Next, the electronic and optoelectronic properties of PdSe2 and related heterostructures, such as field-effect transistors, photodetectors, sensors, and thermoelectric devices, are discussed. Subsequently, the integration of systems into infrared image sensors on the basis of PdSe2 van der Waals heterostructures is explored. Finally, future opportunities are highlighted to serve as a general guide for physicists, chemists, materials scientists, and engineers. Therefore, this comprehensive review may shed light on the research conducted by the 2D material community.

show abstract

High-performance polarization-sensitive photodetector based on a few-layered PdSe2 nanosheet

Cited by 71 publications

References 30 publications

In-Plane Anisotropic Thermal Conductivity of Low-Symmetry PdSe2

In-Plane Anisotropic Thermal Conductivity of Low-Symmetry PdSe2

Electronic Property of PdSe₂ Thin Films Fabricated by Post-selenization of Pd Films

Applications of 2D-Layered Palladium Diselenide and Its van der Waals Heterostructures in Electronics and Optoelectronics

Contact Info

Product

Resources

About

High-performance polarization-sensitive photodetector based on a few-layered PdSe2 nanosheet

Cited by 71 publications

References 30 publications

In-Plane Anisotropic Thermal Conductivity of Low-Symmetry PdSe2

In-Plane Anisotropic Thermal Conductivity of Low-Symmetry PdSe2

Electronic Property of PdSe2 Thin Films Fabricated by Post-selenization of Pd Films

Applications of 2D-Layered Palladium Diselenide and Its van der Waals Heterostructures in Electronics and Optoelectronics

Contact Info

Product

Resources

About

Electronic Property of PdSe₂ Thin Films Fabricated by Post-selenization of Pd Films