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Figure 10 | Journal of Solid State Lighting

Figure 10

From: A comprehensive discussion on colour conversion element design of phosphor converted LEDs

Figure 10

Line scans for the temperature profiles along the vertical directions of the LED packages (for the three radii and phosphor concentrations resulting in CIE × values of about 0.3300) assuming that the assembly is mounted on a cooler with a constant temperature of 300 K. The quantum efficiency of the phosphor is 100% (a) and 70% (b). The position z =0 μm coincides with the top surface of the PCB. HSP: 1 mm refers to a hemispherical globe-top with a radius of 1 mm, similarly HSP: 2 mm and HSP: 3 mm to hemispherical globe-tops with radii of 2 mm and 3 mm. Shown are the results for device operation at currents of either 350 mA or 1000 mA.

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