Results 31 to 40 of about 71,090 (280)

Light-driven conductivity in Quasi-one-dimensional charge density wave insulator (TaSe4)2I

open access: yesiScience
Summary: Charge density waves (CDWs) represent a fundamental phenomenon in condensed matter physics with profound implications for quantum materials research.
Zhenyang Xiao   +5 more
doaj   +1 more source

Recent progress in perovskite-based photodetectors: the design of materials and structures

open access: yesAdvances in Physics: X, 2019
In recent years, taking advantages of high light absorption coefficients, long charge carrier diffusion lengths and intense photoluminescence, halide perovskites have attracted a great deal of interest in developing high-performance optoelectronic ...
Fei Mei   +6 more
doaj   +1 more source

Long-range correlation of thermal radiation [PDF]

open access: yes, 1998
A general theory is presented for the spatial correlations in the intensity of the radiation emitted by a random medium in thermal equilibrium. We find that a non-zero correlation persists over distances large compared to the transverse coherence length ...
Beenakker, C. W. J., Patra, M.
core   +4 more sources

Conditional generation of arbitrary single-mode quantum states of light by repeated photon subtractions

open access: yes, 2005
We propose a scheme for the conditional generation of arbitrary finite superpositions of (squeezed) Fock states in a single mode of a traveling optical field.
Cerf, Nicolas J.   +2 more
core   +1 more source

MoS2-HgTe Quantum Dot Hybrid Photodetectors beyond 2 μm [PDF]

open access: yes, 2017
Mercury telluride (HgTe) colloidal quantum dots (CQDs) have been developed as promising materials for the short and mid-wave infrared photodetection applications because of their low cost, solution processing and size tunable absorption in the short wave-
Barkhouse   +37 more
core   +4 more sources

Polarization‐sensitive and wide‐spectrum photovoltaic detector based on quasi‐1D ZrGeTe4 nanoribbon

open access: yesInfoMat, 2022
Low‐dimensional semiconductors with in‐plane anisotropy and narrow bandgap have been extensively applied to polarized detection in the near‐infrared (NIR) region.
Ruixue Bai   +11 more
doaj   +1 more source

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

open access: yesAdvanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho   +8 more
wiley   +1 more source

Non‐volatile Sliding Ferroelectric Memory Effect in Ultrathin γ‐InSe

open access: yesAdvanced Electronic Materials
Ferroelectrics exhibit field‐tunable non‐volatile polarization, making them essential for modern electronic devices, including memories and sensors. Conventional ferroelectric transistors typically suffer from limited memory windows and poor fatigue ...
Yue Li   +7 more
doaj   +1 more source

Promoting 2D Material Photodetectors by Optical Antennas beyond Noble Metals

open access: yesAdvanced Sensor Research, 2023
The distinctive layered crystal structures and diverse properties of 2D layered materials (2DLMs) have established them as prospective building blocks for implementing next‐generation optoelectronics. One critical predicament in terms of light sensing is
Huaxin Yi   +8 more
doaj   +1 more source

Fast high-efficiency integrated waveguide photodetectors using novel hybrid vertical/butt coupling geometry [PDF]

open access: yes, 1992
We report a novel coupling geometry for integrated waveguide photodetectors−a hybrid vertical coupling/butt coupling scheme that allows the integration of fast, efficient, photodetectors with conventional double heterostructure waveguides.
Andreadakis, N. C.   +7 more
core   +1 more source

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