Biaxial strain tuned upconversion photoluminescence of monolayer WS2 [PDF]
Scientific ReportsMonolayer tungsten disulfide (1L-WS2) is a direct bandgap atomic-layered semiconductor material with strain tunable optical and optoelectronic properties among the monolayer transition metal dichalcogenides (1L-TMDs).
Shrawan Roy, Xiaodong Yang, Jie Gao
doaj +4 more sources
Uncovering upconversion photoluminescence in layered PbI2 above room temperature [PDF]
Scientific ReportsAs a van der Waals (vdW) layered semiconductor material, lead iodide (PbI2) possessing a direct bandgap with strong photoluminescence emission in visible range has gained wide attention in applications of photonic and optoelectronic devices.
Sharad Ambardar, Xiaodong Yang, Jie Gao
doaj +4 more sources
Quantitative Surface Plasmon Interferometry via Upconversion Photoluminescence Mapping [PDF]
Research, 2019 Direct far-field visualization and characterization of surface plasmon polaritons (SPPs) are of great importance for fundamental studies and technological applications. To probe the evanescently confined plasmon fields, one usually requires advanced near-
Anxiang Yin +12 more
doaj +7 more sources
Tuning the upconversion photoluminescence lifetimes of NaYF4:Yb3+, Er3+ through lanthanide Gd3+ doping [PDF]
Scientific Reports, 2018 The multiplexing capacity of conventional fluorescence materials are significantly limited by spectral overlap and background interference, mainly due to their short-lived fluorescence lifetimes.
Heng Qin +5 more
doaj +5 more sources
Room temperature multi-phonon upconversion photoluminescence in monolayer semiconductor WS2 [PDF]
Nature Communications, 2019 Two-dimensional materials show promise for photon upconversion processes due to their strong photon-exciton and phonon-exciton interactions. Here, the authors report room temperature upconversion photoluminescence in monolayer WS2 with high energy gain ...
J. Jadczak +6 more
doaj +6 more sources
Upconversion photoluminescence excitation reveals exciton–trion and exciton–biexciton coupling in hBN/WS $$_{2}$$ 2 /hBN van der Waals heterostructures [PDF]
Scientific Reports, 2022 Monolayers of transition-metal dichalcogenides with direct band gap located at the binary $$K_{-}/K_{+}$$ K - / K + points of the Brillouin zone are promising materials for applications in opto- and spin-electronics due to strongly enhanced Coulomb ...
Ewa Żuberek +8 more
doaj +2 more sources
Exciton States in Monolayer MoSe_{2} and MoTe_{2} Probed by Upconversion Spectroscopy
Physical Review X, 2018 Transitions metal dichalcogenides (TMDs) are direct gap semiconductors in the monolayer (ML) limit with fascinating optical and spin-valley properties.
B. Han +12 more
doaj +2 more sources
Upconversion optical entropy encoding for infrared complex-amplitude imaging [PDF]
Light: Science & ApplicationsUpconversion detection of infrared radiation by cost-effective silicon photodetectors in visible bands has spurred a revolution in infrared imaging technology, unlocking a wide range of applications in biological imaging, optical spectroscopy, and ...
Sheng-ke Zhu +7 more
doaj +2 more sources
Uniaxial Strain Tuning of Upconversion Photoluminescence in Monolayer WSe2
Advanced Photonics ResearchStrain engineering is one of the leading mechanical ways to tune the optical properties of monolayer transition metal dichalcogenides among different techniques.
Shrawan Roy, Xiaodong Yang, Jie Gao
doaj +2 more sources
Efficient light upconversion via resonant exciton-exciton annihilation of dark excitons in few-layer transition metal dichalcogenides [PDF]
Nature CommunicationsMaterials capable of light upconversion—transforming low-energy photons into higher-energy ones—are pivotal in advancing optoelectronics, energy solutions, and photocatalysis. However, the discovery in various materials pays little attention on few-layer
Yi-Hsun Chen +17 more
doaj +2 more sources