Results 111 to 120 of about 30,403 (309)

Synthesis and properties of a spirobifluorene-based hole-transporting material containingtert-butyl group

open access: yes上海师范大学学报. 自然科学版, 2016
A spirobifluorene-based compound SPF-BMO was developed as hole transporters for green phosphorescent organic light-emitting diodes(PhOLEDs).The synthesized material showed sufficient HOMO/LUMO bandgap and triplet energy for green emitting bis[2-(2 ...
DING Ning   +4 more
doaj   +1 more source

Organic light-emitting-diode lighting overview [PDF]

open access: yesJournal of Photonics for Energy, 2011
For organic light-emitting-diode (OLED) lighting to be successful, it is critical that it be properly positioned in the marketplace. It is also critical that both the performance and cost be competitive against other lighting technologies in the selected marketplace.
openaire   +1 more source

Light-emission from conjugated dendrimers and polymers [PDF]

open access: yes, 1999
This thesis reports the photophysical and electroluminescence studies undertaken on two types of material: polymeric and dendritic. The dendritic architecture is a recent concept adopted to develop new materials for light-emitting diodes.
Halim, Mounir, Halim, M.
core  

Efficient Light-Emitting Diodes Based on In-Situ Self-Assembled Perovskite Nanocrystals

open access: yes, 2018
We introduce a simple and low-cost approach -drop-coating method -for preparation of in-situ self-assembled perovskite nanocrystals for efficient light-emitting diodes.
Wang, Heyong,   +3 more
core   +1 more source

Magnetic‐Field Modulation of Charge Transport in Non‐Fullerene Semiconductors for Enhanced Hydrogen Evolution

open access: yesAdvanced Materials Interfaces, EarlyView.
ABSTRACT This study demonstrates that weak magnetic fields (16–40 mT) increase the efficiency of the hydrogen evolution reaction (HER) in electrocatalysts based on non‐fullerene acceptor (NFA) derivatives IT‐4Cl and Y6. Electrochemical measurements reveal that the application of the magnetic field reduces the onset potential and increases the current ...
João Paulo Araujo Souza   +7 more
wiley   +1 more source

Using Equalizers to Increase Data Rates in Organic Photonic Devices for Visible Light Communications Systems

open access: yes, 2014
This thesis proposes to marry two separate technologies together. The first technology is that of visible light communications (VLC), and the second is small molecule and polymer organic photonic devices.
Haigh, Paul
core  

Advances in Halide Perovskites for Photon Radiation Detectors

open access: yesAdvanced Materials Technologies, EarlyView.
This work highlights recent progress in perovskite‐based photon radiation detectors, covering organic–inorganic hybrid, inorganic, lead‐free double, and vacancy‐ordered halide perovskites. Their detection performance is compared, material‐specific advantages and challenges are examined, and provides insight into current limitations and future ...
Liangling Wang   +3 more
wiley   +1 more source

ITO-free top emitting organic light emitting diodes with enhanced light out-coupling

open access: yes, 2014
Bottom emitting organic light emitting diodes (OLEDs) can suffer from lower external quantum efficiencies (EQE) due to inefficient out-coupling of the generated light.
Ullah, Mujeeb   +9 more
core   +1 more source

Parallel Electrical Integration of Photo Bio Electrochemical Systems (photo‐BESs): Performance Gains and Load Dependency

open access: yesAdvanced Materials Technologies, EarlyView.
Parallel wiring of bioelectrochemical devices with conventional generators unexpectedly boosts output. A biophotovoltaic paired with a solar cell delivers up to 50% more power at low loads than their separate contributions; a plant microbial fuel cell shows similar current gains.
Valeria Marsaglia   +4 more
wiley   +1 more source

Organic light-emitting diode

open access: yes, 2011
An organic light emitting diode (OLED) is a light-emitting diode (LED) in which the emissive electroluminescent layer is a film of organic compounds which emit light in response to an electric current. This layer of organic semiconductor material is situated between two electrodes. Generally, at least one of these electrodes is transparent.
Diadechko, Alla Mykolaivna, Shapko, D.V.
openaire   +1 more source

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