309 citations · 703 across the 13 of their papers we have counts for
13 papers
Optical microscopy-based thickness estimation in thin GaSe flakes
Wenliang Zhang, Qinghua Zhao, Sergio Puebla +3
We have implemented three different optical methods to quantitatively assess the thickness of thin GaSe flakes transferred on both transparent substrates, like Gel-Film, or SiO2/Si…
Integrating van der Waals materials on paper substrates for electrical and optical applications
Wenliang Zhang, Qinghua Zhao, Carmen Munuera +12
Paper holds the promise to replace silicon substrates in applications like internet of things or disposable electronics that require ultra-low-cost electronic components and an env…
Thickness identification of thin InSe by optical microscopy methods
Qinghua Zhao, Sergio Puebla, Wenliang Zhang +3
Indium selenide (InSe), as a novel van der Waals layered semiconductor, has attracted a large research interest thanks to its excellent optical and electrical properties in the ult…
Giant piezoresistive effect and strong band gap tunability in ultrathin InSe upon biaxial strain
Qinghua Zhao, Tao Wang, Riccardo Frisenda +1
The ultrathin nature and dangling bonds free surface of two-dimensional (2D) semiconductors allow for significant modifications of their band gap through strain engineering. Here,…
InSe Schottky diodes based on van der Waals contacts
Qinghua Zhao, Wanqi Jie, Tao Wang +2
Two-dimensional semiconductors are excellent candidates for next-generation electronics and optoelec-tronics thanks to their electrical properties and strong light-matter interacti…
The role of traps in the photocurrent generation mechanism in thin In-Se photodetectors
Qinghua Zhao, Wei Wang, Felix Carrascoso-Plana +4
Due to the excellent electrical transport properties and optoelectronic performance, thin indium selenide (InSe) has recently attracted attention in the field of 2D semiconducting…
A system to test 2D optoelectronic devices in high vacuum
Qinghua Zhao, Felix Carrascoso, Patricia Gant +3
The exploration of electronic and optoelectronic properties of two-dimensional (2D) materials has become one of the most attractive line of research since the isolation of graphene…
InSe: a two-dimensional semiconductor with superior flexibility
Qinghua Zhao, Riccardo Frisenda, Tao Wang +1
Two-dimensional Indium Selenide (InSe) has attracted extensive attention recently due to its record-high charge carrier mobility and photoresponsivity in the fields of electronics…
An inexpensive system for the deterministic transfer of 2D materials
Qinghua Zhao, Tao Wang, Yu Kyoung Ryu +2
The development of systems for the deterministic transfer of two-dimensional (2D) materials have undoubtedly contributed to a great advance in the 2D materials research. In fact, t…
Second harmonic and sum-frequency generations from a silicon metasurface integrated with a two-dimensional material
Qingchen Yuan, Liang Fang, Hanlin Fang +5
Silicon-based nonlinear metasurfaces were implemented only with third-order nonlinearity due to the crystal centrosymmetry and the efficiencies are considerably low, which hinders…
Towards Air Stability of Ultra-Thin GaSe Devices: Avoiding Environmental and Laser-Induced Degradation by Encapsulation
Qinghua Zhao, Riccardo Frisenda, Patricia Gant +7
Gallium selenide (GaSe) is a novel two-dimensional material, which belongs to the layered III-VIA semiconductors family and attracted interest recently as it displays single-photon…
Multiple optical frequency-conversions in few-layer GaSe assisted by a photonic crystal cavity
Liang Fang, Qingchen Yuan, Hanlin Fang +6
While two-dimensional (2D) materials have intriguing second-order nonlinearities with ultrahigh coefficient and electrical tunability, their atomic layer thicknesses hinder explora…
Microwatts continuous-wave pumped second harmonic generation in few- and mono-layer GaSe
Xuetao Gan, Chenyang Zhao, Siqi Hu +6
We demonstrate the first achievement of continuous-wave (CW) pumped second harmonic generation (SHG) in few- and mono-layer gallium selenide (GaSe) flakes, which are coated on sili…