The type-II band structures in vertically stacked transition metal dichalcogenides (TMDs) heterobilayers facilitate the formation of interlayer excitons. The twist-angle and the mismatch in the lattice constants of the monolayers ...
Nanomaterials
Oct 20, 2021
0
5
From a team of City College of New York physicists and their collaborators in Japan and Germany comes another advancement in the study of excitons—electrically neutral quasiparticles that exist in insulators, semi-conductors ...
Nanophysics
Nov 1, 2021
0
32
When light of specific frequency hits a semiconductor crystal, it is absorbed and produces excitation, a state of higher energy. In solar cells, this energy is converted into electricity. In two-dimensional crystals, which ...
Nanophysics
May 4, 2018
0
11
Since the realization that a linearly polarized light can create K-K' valley coherent excitons in monolayer transition metal dichalcogenide (TMDC) semiconductors back in 2013, it has been a longstanding goal for researchers ...
Optics & Photonics
Jul 19, 2023
0
2
A team of researchers from Osaka University, Osaka Prefecture University, Osaka City University, and The University of Shiga Prefecture have found excitonic radiative decay faster than thermal dephasing at room temperature ...
Optics & Photonics
May 15, 2019
0
5
Applying hydrostatic pressure as an external stimulus, Tokyo Tech and Keio University researchers demonstrate a new way to regulate singlet fission (SF), a process in which two electrons are generated from a single photon, ...
Analytical Chemistry
Mar 23, 2023
0
105
Recently, a group of illegal counterfeiters was apprehended for producing around 400 fake luxury jewelry items using molds. They were able to create hundreds of faked luxury items simply after pouring molten metal into molds ...
Analytical Chemistry
Jun 13, 2023
0
28
Semiconductor nanocrystals (NCs) hold great promise as sensitizers for triplet-triplet annihilation up-conversion (TTA-UC) due to their facile bandgap tunability and negligible inter-system crossing loss. However, the understanding ...
Optics & Photonics
Feb 9, 2023
0
24
National University of Singapore scientists have demonstrated the non-invasive imaging of both the organic layers and underlying inorganic lattice of two-dimensional (2D) hybrid perovskites at the sub-angstrom level.
Nanomaterials
Jul 6, 2022
0
5
Organic semiconductors are a class of materials that find applications in various electronic devices owing to their unique properties. One attribute that influences the optoelectronic property of these organic semiconductors ...
Condensed Matter
Jan 18, 2024
0
2
