화학공학소재연구정보센터
Journal of the American Ceramic Society, Vol.96, No.5, 1349-1351, 2013
Near-infrared quantum cutting of Eu2+/Yb3+ codoped chalcohalide glasses
Near-infrared (NIR) quantum cutting involving the emission of two NIR photons for each visible photon absorbed is realized from Eu2+/Yb3+ codoped chalcohalide glasses. Excitation, emission and decay spectra are measured to prove the occurrence of cooperative energy transfer (ET) from Eu2+ to Yb3+. The maximum ET efficiency obtained is as high as 85%. The ET from Eu2+ to Yb3+ is followed by dipole-dipole interaction. The possible mechanism of ET is discussed.