Search results for optoelectronic devices

Optics & Photonics Apr 9, 2024

Research team exerts electrical control over polaritons, hybridized light-matter particles, at room temperature

A research team has pioneered an innovative technique in ultra-high-resolution spectroscopy. Their breakthrough marks the world's first instance of electrically controlling polaritons—hybridized light-matter particles—at ...

Condensed Matter Apr 8, 2024

High-performance terahertz modulators induced by substrate field in Te-based all-2D heterojunctions

High-performance active terahertz (THz) modulators are of great importance for next generation communication technology. However, they currently suffer from the tradeoff between modulation depth and speed.

Condensed Matter Apr 1, 2024

Team creates cooperative exciton-polariton condensate

Superfluorescence (SF), as a cooperative radiation effect originating from vacuum quantum fluctuations, is an ideal platform for studying many-body correlation mechanisms in an exciton ensemble, and for developing optically ...

Optics & Photonics Apr 1, 2024

Team demonstrates an ultra-broadband tunable terahertz absorber of graphene and hierarchical plasmonic metamaterials

Perfect absorption arises from the strong interaction of valence electrons with light in a conducting material. Optical metamaterial is an effective approach to exploit the superior photon capture capability. Thus, the perfect ...

Optics & Photonics Apr 1, 2024

Researchers observe anomalously bright single-molecule upconversion electroluminescence phenomenon

A research group has developed a new and highly efficient upconversion luminescence mechanism by scanning tunneling microscopy (STM) induced luminescence to observe an extraordinarily bright single-molecule upconversion electroluminescence ...

Condensed Matter Mar 28, 2024

Study unveils a spontaneous toroidal polar topology in the helielectric nematic state

Magnetic and electric dipoles, objects with two oppositely charged ends, have a similar symmetrical structure. One might thus assume that they exhibit similar internal structures and physical states.

Nanomaterials Mar 22, 2024

A 2D 'antenna' boosts light emission from carbon nanotubes

A flat sheet of atoms can act as a kind of antenna that absorbs light and funnels its energy into carbon nanotubes, making them glow brightly. This advance could aid the development of tiny future light-emitting devices that ...

Optics & Photonics Mar 19, 2024

2D optoelectronic neuron array achieves broadband and low-loss optical nonlinearity accessible with ambient light

Light can compute functions during its propagation and interaction with structured materials, with high speed and low energy consumption. Achieving universal computing using all-optical neural networks requires optical activation ...

Optics & Photonics Mar 15, 2024

Direct laser writing on halide perovskites: From mechanisms to applications

Metal halide perovskites have become well-deserved "star" materials among a variety of semiconductors owing to their excellent optoelectronic properties, such as high photoluminescence (PL) quantum yield (QY), high absorption ...

Nanomaterials Mar 14, 2024

Researchers overcome lattice mismatch issue to advance optoelectronic applications

A research team from City University of Hong Kong (CityU) recently successfully achieved lattice-mismatch-free construction of III-V/chalcogenide core-shell heterostructure nanowires for electronic and optoelectronic applications. ...

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