https://www.osti.gov/pages/biblio/1981119-influence-superlattice-structure-defect-distribution-external-quantum-efficiency-electroluminescence-red-ingan-based-leds-silicon
Influence of Superlattice Structure on V-Defect Distribution, External Quantum Efficiency and...
The U.S. Department of Energy's Office of Scientific and Technical Information
external quantum efficiency