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About IQE | ODPL measurement system

 

"IQE" is a parameter for quality evaluation

Semiconductor crystals have the property of emitting light when they are excited by light emitted from outside (photoluminescence). IQE is a parameter that expresses the efficiency of this light emission, and its value changes with great sensitivity due to dislocations, defects, and dopants. Therefore, it is expected that IQE will be used as an indicator of the quality of semiconductor materials.

ODPL measurement system Principle 2

GaN crystal lattice

ODPL measurement system Principle 1

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