Design of vertically-stacked polychromatic light-emitting diodes.

High-efficiency organic polymer light-emitting heterostructure devices on flexible plastic substrates

Articles you may be interested in High-contrast organic light-emitting diodes on flexible substrates Appl. High-performance polymer light-emitting diodes doped with a red phosphorescent iridium complex Appl. High-efficiency, low-drive-voltage, semitransparent stacked organic light-emitting device Appl.

Thin-film Encapsulation of Organic Light-Emitting Diodes Using Single and Multilayer Structures of MgF2, YF3 and ZnS

In this research, the lifetime of green organic light emitting diodes (OLEDs) is studied using four passivation layers. To encapsulate the OLEDs, MgF2, YF3, composed of alternating MgF2/ZnS and YF3/ZnS layers were grown by thermal vacuum deposition. Measurements show that the device lifetime is significantly improved by using YF3 and ZnS as passivation layers. However, diodes encapsulated by Mg...

High-performance Single-unit and Stacked Inverted Top-emitting Electrophosphorescent Organic Light-emitting Diodes

Polychromatic LED therapy in burn healing of non-diabetic and diabetic rats.

OBJECTIVE We determined the effect of polychromatic light-emitting diodes (LED) in burn healing of non-diabetic and streptozotocin-induced diabetic rats. BACKGROUND DATA LEDs were used as the light source for phototherapy. MATERIALS AND METHODS The polychromatic LED is a cluster of 25 diodes emitting photons at wavelengths of 510-543, 594-599, 626-639, 640-670, and 842-879 nm with 272-mW ou...

Wearable red–green–blue quantum dot light-emitting diode array using high-resolution intaglio transfer printing

Deformable full-colour light-emitting diodes with ultrafine pixels are essential for wearable electronics, which requires the conformal integration on curvilinear surface as well as retina-like high-definition displays. However, there are remaining challenges in terms of polychromatic configuration, electroluminescence efficiency and/or multidirectional deformability. Here we present ultra-thin...