Phosphor bleibt spannend!

Patterned structure of remote phosphor for phosphor-converted white LEDs.

High efficiency white light-emitting diodes with superior color-mixing have been investigated. It is suggested that the patterned remote phosphor structure could improve the uniformity of angular-dependent correlated color temperature (CCT) and achieve high chromatic stability in wider operating current range, as compared to the conventional remote phosphor coating structure. In this experiment...

EAI und SOA - Was bleibt nach dem Hype?

Das Fach Wirtschaftsinformatik hat sich in der Vergangenheit mehrfach als anfällig gegenüber Moden und Trends erwiesen und muss sich immer wieder mit der Frage auseinandersetzen, welche Themen nachhaltig verfolgt werden können und welche nur als Mode einzuschätzen sind. Im Bereich der innerbetrieblichen Integration sind in den letzten Jahren unter den Stichworten Enterprise Application Integrat...

Electroluminescence from Phosphor-doped nanocrystals

Alternating current thin-film electroluminescent (ACTFEL) devices already occupy a segment of the largearea, high-resolution, flat-panel-display market. The AC-TFEL displays, which consist of a phosphor layer, such as manganese doped-zinc sulfide (ZnS:Mn), vertically sandwiched between two insulators that are contacted by electrodes, are robust, possess long lifetimes, and offer high luminance ...

Investigation of Remote-Phosphor White Light-Emitting Diodes with Multi-Phosphor Layers

Red (SrCa)AlSiN3: Eu Nitride Phosphor Particle Size of Phosphor Converted Warm White LEDs

Red (SrCa)AlSiN3: Eu nitride phosphor with different particle sizes were characterized based on physical and luminescent properties, then packaged into Chip-On-Board (COB) Warm White Light Emitting Diode (LED) modules to investigate the influence of particle size on packaging parameters and optical output of the COB LED devices. The phosphor particle sizes investigated were 10μm, 12μm and 14μm,...