id author title date pages extension mime words sentence flesch summary cache txt 00000002p3s Yurii Morozov Semiconductor Nanostructures with High Photoluminescence Quantum Efficiency and Their Application for Laser Cooling 2019 .txt text/plain 257 11 35 During anti-Stokes PL, the energy of the incoming laser photons is lower than the band gap energy, and necessary energy deficiency is supplied by thermal energy. Despite the simplicity of the underlying principle, actual realization requires remarkably high external PL quantum efficiency (near unity).This entails very high internal PL quantum efficiency and PL extraction efficiency. cache/00000002p3s.txt txt/00000002p3s.txt