TY JOUR TI NARROWING OF THE GAAS LED EMISSION SPECTRUM DUE TO THE USE OF THE INP (AG) LIGHT FILTER KW gallium arsenide KW indium phosphide KW light filter KW LED spectral band KW approximation JO Modeling of systems and processes AU Makarenko, F.V. AU Arsent'ev, A.V. AU Zolnikov, K.V. PY 2021 IS 13 PB FSBE Institution of Higher Education Voronezh State University of Forestry and Technologies named after G.F. Morozov