external quantum efficiency

https://doi.org/10.1351/goldbook.16202
Efficiency of light emission for solid-state light-emitting devices, such as organic light-emitting devices (OLEDs). Analogous to emission quantum yield.
Source:
PAC, 2007, 79, 293. (Glossary of terms used in photochemistry, 3rd edition (IUPAC Recommendations 2006)) on page 338 [Terms] [Paper]