IEC 60747-5-8:2019 ED1

Semiconductor devices - Part 5-8: Optoelectronic devices - Light emitting diodes - Test method of optoelectronic efficiencies of light emitting diodes IEC 60747-5-8:2019 ED1

Publication date:   Nov 13, 2019

General information

60.60 Standard published   Nov 13, 2019


TC 47/SC 47E

International Standard

31.080.99   Other semiconductor devices



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IEC 60747-5-8:2019 specifies the terminology and the measuring methods of various efficiencies of single light emitting diode (LED) chips or packages without phosphor. White LEDs for lighting applications are out of the scope of this part of IEC 60747. The efficiencies whose measuring methods are defined in this part are the power efficiency (PE), the external quantum efficiency (EQE), the voltage efficiency (VE), and the light extraction efficiency (LEE). To measure the LEE, the measurement data of the internal quantum efficiency (IQE) is used, whose measuring method is discussed in IEC 60747-5-9 and IEC 60747-5-10. The injection efficiency (IE) and the radiative efficiency (RE) are given definitions only.

Life cycle


IEC 60747-5-8:2019 ED1
60.60 Standard published
Nov 13, 2019