The invention discloses a light-emitting element, including a first conductivity type semiconductor layer;
一种发光元件，包括：第一导电型半导体层；
Spirofluorene derivative, material for light-emitting element, light-emitting element, light-emitting device, and electronic device.
螺芴衍生物，发光元件用材料，发光元件，发光设备和电子设备。
It is an object of the present invention to collect a scarce metal such as iridium from a light-emitting element which is no longer used.
本发明的一个目的是从不再使用的发光元件中收集铱之类的稀有金属。
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