Topics

Excited-State Trions in Monolayer WS_{2}.

08:00 EDT 18th October 2019 | BioPortfolio

Summary of "Excited-State Trions in Monolayer WS_{2}."

We discover an excited bound three-particle state, the 2s trion, appearing energetically below the 2s exciton in monolayer WS_{2}, using absorption spectroscopy and ab initio GW and Bethe-Salpeter equation calculations. The measured binding energy of the 2s trion (22 meV) is smaller compared to the 1s intravalley and intervalley trions (37 and 31 meV). With increasing temperature, the 1s and 2s trions transfer their oscillator strengths to the respective neutral excitons, establishing an optical fingerprint of trion-exciton resonance pairs. Our discovery underlines the importance of trions for the entire excitation spectrum of two-dimensional semiconductors.

Affiliation

Journal Details

This article was published in the following journal.

Name: Physical review letters
ISSN: 1079-7114
Pages: 167401

Links

DeepDyve research library

PubMed Articles [6276 Associated PubMed Articles listed on BioPortfolio]

Gate Tunable Dark Trions in Monolayer WSe_{2}.

Monolayer WSe_{2} is an intriguing material to explore dark exciton physics. We have measured the photoluminescence from dark excitons and trions in ultraclean monolayer WSe_{2} devices encapsulated b...

Rapid Excited State Deactivation of BODIPY Derivatives by a Boron Bound Catechol.

The excited state dynamics and energetics of a series of BODIPY derived chromophores bound to a catechol at the boron position were investigated with a combination of static and time resolved spectros...

Engineering Excited-State Interactions at Ultracold Temperatures.

Using a recently developed method for precisely controlling collision energy, we observe a dramatic suppression of inelastic collisions between an atom and ion (Ca+Yb^{+}) at low collision energy. Thi...

Ground-state Structural Disorder and Excited-state Symmetry Breaking in a Quadrupolar Molecule.

The influence of torsional disorder around the ethynyl π-bridges of a linear D-π-A-π-D molecule on the nature of its S excited state was investigated using ultrafast time-resolved infrared spectros...

Carotenoid Nuclear Reorganization and Interplay of Bright and Dark Excited States.

We report quantum chemical calculations using multireference perturbation theory (MRPT) with the density matrix renormalization group (DMRG) plus photothermal deflection spectroscopy measurements to i...

Clinical Trials [1781 Associated Clinical Trials listed on BioPortfolio]

BE Study of Bilayer Combination of Gemigliptin/Rosuvastatin 50/20mg in Comparison to Monolayer Combination.

To evaluate and compare PK/PD, safety and tolerability of monolayer combination of Gemigliptin/Rosuvastatin 50/20mg and bilayer combination of Gemigliprin/Rosuvastatin 50/20mg in healthy a...

Safety and Efficacy Study of Encapsulated Human Islets Allotransplantation to Treat Type 1 Diabetes

In view to avoid immunosuppression, the investigators are submitting a Phase 1 clinical trial protocol testing the safety and the efficacy of encapsulated human islets in a "Monolayer Cell...

Intraoperative Imaging of Pituitary Adenomas by OTL

The primary end-point of the study is to determine the specificity and sensitivity of OTL38 in identifying pituitary adenomas when excited by an imaging probe. The investigators intend to ...

EEG Synchronized TMS Trial for Depression

Daily prefrontal TMS for depression, as developed by the PI, involves delivering TMS pulses to the prefrontal cortex and not assessing what the actual EEG phase is of the person's brain. I...

Efficacy Study of NH001 in Vegetative State & Minimally Conscious State Following a Traumatic Brain Injury

The purpose of this study is to test the drug apomorphine in subjects who are in a Vegetative State or a Minimally Conscious State.

Medical and Biotech [MESH] Definitions

Emission of LIGHT when ELECTRONS return to the electronic ground state from an excited state and lose the energy as PHOTONS. It is sometimes called cool light in contrast to INCANDESCENCE. LUMINESCENT MEASUREMENTS take advantage of this type of light emitted from LUMINESCENT AGENTS.

An excited state of molecular oxygen generated photochemically or chemically. Singlet oxygen reacts with a variety of biological molecules such as NUCLEIC ACIDS; PROTEINS; and LIPIDS; causing oxidative damages.

An emotional attitude excited by realization of a shortcoming or impropriety.

Dynamic cytoplasmic organelles found in almost all cells. They consist of a central core of LIPIDS surrounded by a phospholipid monolayer studded with surface proteins, and are involved in LIPID METABOLISM and storage.

Agents or remedies that historically have produced stimulation or excited functional activity.

Quick Search


DeepDyve research library

Searches Linking to this Article