IEC-60747-5-9 › Semiconductor devices - Part 5-9: Optoelectronic devices - Light emitting diodes - Test method of the internal quantum efficiency based on the temperature-dependent electroluminescence

IEC-60747-5-9 - EDITION 1.0 - CURRENT


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IEC 60747-5-9:2019(E) specifies the measuring method of the internal quantum efficiency (IQE) of single light emitting diode (LED) chips or packages without phosphor. White LEDs for lighting applications are out of the scope of this document. This document utilizes the relative external quantum efficiencies (EQEs) measured at cryogenic temperatures and at an operating temperature, which is called temperature-dependent electroluminescence (TDEL). In order to identify the reference IQE of 100 %, the maximum values of the peak EQE are found by varying the environmental temperature and current.

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Document Number

IEC 60747-5-9 Ed. 1.0 en:2019

Revision Level

EDITION 1.0

Status

Current

Publication Date

Dec. 1, 2019

Committee Number

47E