Reverse Saturable Absorption Induced by Phonon-Assisted Anti-Stokes Processes.
Sign Up to like & getrecommendations! Published in 2018 at "Advanced materials"
DOI: 10.1002/adma.201801638
Abstract: In materials showing reverse saturable absorption (RSA), optical transmittance decreases at intense laser irradiation. One approach to application of these materials is to protect the sensors or human eyes from laser damage. To date, research… read more here.
Keywords: absorption; assisted anti; phonon assisted; saturable absorption ... See more keywords
Phonon-assisted anti-Stokes luminescence of tricarbocyanine near-infrared dye
Sign Up to like & getrecommendations! Published in 2020 at "Chemical Physics Letters"
DOI: 10.1016/j.cplett.2019.136905
Abstract: Abstract Hot-band absorption assisted anti-Stokes photoluminescence (ASPL) in the near infrared region is demonstrated using specific tricarbocyanine dye, with the large anti-Stokes shift of 100 nm. Intensity of the ASPL is shown to correlate with intensity… read more here.
Keywords: near infrared; assisted anti; phonon assisted; dye ... See more keywords
Optical temperature sensing based on phonon-assisted population of Dy3+ sensitized by Gd3+ in Gd2Ge2O7 nanophosphors
Sign Up to like & getrecommendations! Published in 2020 at "Journal of Luminescence"
DOI: 10.1016/j.jlumin.2020.117567
Abstract: Abstract Herein, we propose a series of unprecedented Dy3+-doped triclinic Gd2Ge2O7 nanophosphors by solid-state reaction method. As the doping concentration arises, the XRD peaks shift to large angle and absorption edge energy increases from 5.42… read more here.
Keywords: gd2ge2o7 nanophosphors; temperature; dy3; population dy3 ... See more keywords
Phonon-assisted exciton dissociation in transition metal dichalcogenides.
Sign Up to like & getrecommendations! Published in 2021 at "Nanoscale"
DOI: 10.1039/d0nr07131e
Abstract: Monolayers of transition metal dichalcogenides (TMDs) have been established in the last years as promising materials for novel optoelectronic devices. However, the performance of such devices is often limited by the dissociation of tightly bound… read more here.
Keywords: transition metal; assisted exciton; dissociation; phonon assisted ... See more keywords
Activation of B1 silent Raman modes and its potential origin as source for phonon-assisted replicas in photoluminescence response in N-doped ZnO nanowires
Sign Up to like & getrecommendations! Published in 2018 at "Journal of Applied Physics"
DOI: 10.1063/1.5011142
Abstract: ZnO nanowires are grown by metal organic chemical vapor deposition using two different zinc precursors, i.e., dimethylzinc-triethylamine which contains nitrogen, and diethylzinc which does not. The growth conditions are varied using different oxygen/zinc pressure ratios… read more here.
Keywords: raman; assisted replicas; raman modes; phonon assisted ... See more keywords
Time-resolved photoluminescence spectral analysis of phonon-assisted DAP and e-A recombination in N+B-doped n-type 4H-SiC epilayers
Sign Up to like & getrecommendations! Published in 2019 at "Journal of Physics D: Applied Physics"
DOI: 10.1088/1361-6463/aaf8e9
Abstract: It is crucial to clarify the roles of phonon-assisted donor-acceptor pairs (DAPs) and free-to-acceptor (e-A) emissions in n-type 4H-SiC doped with nitrogen (N) and boron (B), where N and B induce the shallow donor and… read more here.
Keywords: time resolved; emission; recombination; resolved photoluminescence ... See more keywords
Phonon-assisted upconversion photoluminescence of quantum emitters
Sign Up to like & getrecommendations! Published in 2023 at "Journal of Semiconductors"
DOI: 10.1088/1674-4926/44/4/041901
Abstract: Quantum emitters are widely used in quantum networks, quantum information processing, and quantum sensing due to their excellent optical properties. Compared with Stokes excitation, quantum emitters under anti-Stokes excitation exhibit better performance. In addition to… read more here.
Keywords: assisted upconversion; quantum; stokes excitation; upconversion photoluminescence ... See more keywords
Electron tunneling dynamics between two-dimensional and zero-dimensional quantum systems: Contributions of momentum matching, higher subbands, and phonon-assisted processes
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review B"
DOI: 10.1103/physrevb.102.035413
Abstract: We investigate tunneling dynamics of electrons from an ensemble of self-assembled InAs quantum dots into the subbands of a two-dimensional electron gas (2DEG). LO-phonon-assisted tunneling processes and tunneling into higher subbands of the 2DEG electronic… read more here.
Keywords: quantum; higher subbands; two dimensional; phonon assisted ... See more keywords
Phonon-assisted dark exciton preparation in a quantum dot
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.95.195305
Abstract: In semiconductor quantum dots the coupling to the environment, i.e. to phonons, plays a crucial role for optical state preparation. We analyze the phonon impact on two methods for a direct optical preparation of the… read more here.
Keywords: quantum; assisted dark; exciton preparation; phonon assisted ... See more keywords
Exponential and power-law renormalization in phonon-assisted tunneling
Sign Up to like & getrecommendations! Published in 2017 at "Physical Review B"
DOI: 10.1103/physrevb.96.195155
Abstract: We investigate the spinless Anderson-Holstein model routinely employed to describe the basic physics of phonon-assisted tunneling in molecular devices. Our focus is on small to intermediate electron-phonon coupling; we complement a recent strong coupling study… read more here.
Keywords: renormalization; phonon; phonon assisted; law renormalization ... See more keywords
Phonon-Assisted Transport through Double-Dot Aharonov-Bohm Interferometer in Kondo Regime
Sign Up to like & getrecommendations! Published in 2020 at "Acta Physica Polonica A"
DOI: 10.12693/aphyspola.137.747
Abstract: The effect of electron-phonon coupling on transport through a pair of strongly correlated quantum dots embedded in the Aharonov-Bohm ring is considered in the mean field slave boson Kotliar-Ruckenstein approach. It is shown that coupling… read more here.
Keywords: transport; phonon assisted; assisted transport; phonon ... See more keywords