ife.Heatatthep-n-junctionisoneofthemainfactorsthataffectthelifeofwhiteLEDs.Therefore,knowingtherelationshipbetweenlifeandheatwouldbeveryusefulformanufacturerswhoareinterestedindevelopingreliable,long-lastingsystems.Resultsfromthefirstexperiment—conductedundervariousambienttemperaturestounderstandtherelationshipbetweenT-pointtemperatureandlife—indicatethatlifedecreaseswithincreasingtemperatureinanexponentialmanner.Resultsfromthesecondexperiment—mercialwhiteLEDsperformunderidenticaloperatingconditions—showalargevariationinlifeamongthedifferentpackages,indicatingthatthepackagesuseddifferentheatextractiontechniquesandmaterials.Aspartofongoingresearch,mercialLEDsareaffectedbyheatandfinallydevelopafamilyofcurvesthatillustratetherelationshipbetweenlifeandT-pointtemperatureforthedifferentproducts.
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