Organic electroluminescent element, lighting fixture, and food storage device

摘要

The object of the present invention is to provide an organic electroluminescent element suitable for both food lighting at a high temperature and indoor lighting at room temperature. The organic electroluminescent element according to the present invention has such characteristics that: an element temperature at which a general color rendering index Ra has its maximum in an element temperature range of 5° C. to 60° C. is present in a range of 15° C. to 35° C.; and an element temperature at which at least one of a color rendering index R8 a special color rendering index R9, a special color rendering index R14, and a special color rendering index R15 has its maximum in the element temperature range of 5° C. to 60° C. is in a range of temperatures higher than the element temperature at which the general color rendering index Ra has its maximum.

主权项

1. An organic electroluminescent element, comprising:
a first light emitting layer, including a first green region light emitting layer; a second light emitting layer, including a second green region light emitting layer; and an interlayer interposed between the first light emitting layer and the second light emitting layer, the organic electroluminescent element having such characteristics that: an element temperature, at which a general color rendering index Ra has its maximum in an element temperature range of 5° C. to 60° C., is present in a range of 15° C. to 35° C.; and, an element temperature, at which at least one of a color rendering index R8, a special color rendering index R9, a special color rendering index R14, and a special color rendering index R15 has its maximum in the element temperature range of 5° C. to 60° C., is in a temperature range higher than the element temperature at which the general color rendering index Ra has its maximum.