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