Assertion: led's intensity | /r/HasProperty | 0.03 mw
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Source sentences:
text: In order to investigate which mechanism dominates the efficiency roll-off in the MQW perovskite LEDs, we measure the PLQE and EQE of the devices simultaneously by using low-frequency chopped illumination at very low intensity (0.03 mW cm−2), when the LED device is in operation.