Results 81 to 90 of about 497,014 (306)

Tailorable infrared sensing device with strain layer superlattice structure [PDF]

open access: yes, 1987
An infrared photodetector is formed of a heavily doped p-type Ge sub x Si sub 1-x/Si superlattice in which x is pre-established during manufacture in the range 0 to 100 percent.
Cheng, Li-Jen
core   +1 more source

InP nanocrystals on silicon for optoelectronic applications

open access: yes, 2012
One of the solutions enabling performance progress, which can overcome the downsizing limit in silicon technology, is the integration of different functional optoelectronic devices within a single chip. Silicon with its indirect band gap has poor optical
Helm, Manfred   +10 more
core   +1 more source

Stable P‐Type PbS Quantum Dot Ink for all‐Blade‐Coated Short‐Wavelength Infrared Photodiodes

open access: yesAdvanced Materials, EarlyView.
Stabilization of p‐type PbS quantum dot ink is achieved through hydrogen bonding between fluorinated alcohols solvent and the MP ligand, allowing a six‐day shelf‐life. The solvent does not compromise pre‐deposited layers, enabling fully blade‐coated photodiodes in both n–p and p–n architectures, with enhanced detectivity and bandwidth compared to layer‐
Han Wang   +5 more
wiley   +1 more source

On-chip optical diode based on silicon photonic crystal heterojunctions

open access: yes, 2011
Optical isolation is a long pursued object with fundamental difficulty in integrated photonics. As a step towards this goal, we demonstrate the design, fabrication, and characterization of on-chip wavelength-scale optical diodes that are made from the ...
Almeida   +27 more
core   +1 more source

Single‐Chromophore Homojunction Organic Solar Cells: A Path to Simplicity and Efficiency

open access: yesAdvanced Materials, EarlyView.
This perspective discusses how the intrinsic optoelectronic properties of organic semiconductors, their molecular packing in the solid‐state, and internal energetic gradients within a device can enable free‐charge carrier generation in homojunction organic solar cells.
Shaun McAnally   +2 more
wiley   +1 more source

Development of photocatalysis‐membrane separation reactor systems for aqueous pollutant removal

open access: yesPhotoMat, EarlyView., 2023
Abstract Background In our rapidly expanding society, the demand for clean water has steadily emerged as one of the most critical issues, promoting the development of numerous water treatment strategies. Aims Coupling photocatalysis and membrane separation technology provides an energy saving and environment‐friendly as well as sustainable method for ...
Junyang Zhang   +3 more
wiley   +1 more source

Model for petahertz optical memory based on a manipulation of the optical-field-induced current in dielectrics

open access: yesNew Journal of Physics, 2018
A new physical insight into the ultrafast information communication can be gained from the reversible and robust petahertz (PHz, 10 ^15 Hz) current induced by a strong few-cycle optical waveform in large band-gap dielectrics.
J D Lee, Youngjae Kim, Chil-Min Kim
doaj   +1 more source

Emergent Freestanding Complex Oxide Membranes for Multifunctional Applications

open access: yesAdvanced Materials, EarlyView.
This review surveys freestanding oxide membranes and covers fabrication and three pathways for studies and devices: strain‐free and strained membranes, and van der Waals‐integrated heterostructures. We show how coupled oxide responses map onto these routes and cross‐couple to expand behaviors.
Baowen Li   +6 more
wiley   +1 more source

Exciton Dissociation Dynamics in Model Donor-Acceptor Polymer Heterojunctions: I. Energetics and Spectra

open access: yes, 2005
In this paper we consider the essential electronic excited states in parallel chains of semiconducting polymers that are currently being explored for photovoltaic and light-emitting diode applications.
Eric R. Bittner   +3 more
core   +1 more source

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