On the Thermal Load of the Color‐Conversion Elements in Phosphor‐Based White Light‐Emitting Diodes
Source abstract
Abstract
For further improvements to the reliability and the white light quality of phosphor‐converted light‐emitting diodes (LEDs), it is imperative to understand how the compositional, optical, and thermal properties of the materials constituting the color‐conversion elements (CCEs) affect their respective thermal loads. By means of a combined optical and thermal simulation procedure, a comprehensive discussion is given on the underlying coherences of the absorption profile of the blue LED light, the phosphor concentration, the quantum efficiency of the phosphor, and the thermal conductivities of the CCEs. Some general strategies of material composition and design are deduced in order to minimize the thermal load of the CCEs, which is a prerequisite for correlated color temperature maintenance and long‐term material reliability of phosphor‐converted white LEDs.
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Research context
OpenAlex topics: GaN-based semiconductor devices and materials · Luminescence Properties of Advanced Materials · Organic Light-Emitting Diodes Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Institute of Sensor & Actuator Systems Vienna University of Technology Gusshausstraße 27–29 A‐1040 Vienna Austria
Institute of Surface Technologies and Photonics JOANNEUM RESEARCH, Forschungsgesm.b.H Franz‐Pichler Straße 30 A‐8160 Weiz Austria
Tridonic Jennersdorf GmbH Technologiepark 10 A‐8380 Jennersdorf Austria
Austria Technologie & Systemtechnik AG Fabriksgasse 13 A‐8700 Leoben Austria
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