摘要We report on cooperative quantum cutting in Tb3+-Yb3+ codoped glass ceramics. Precipitation of BaF2 nano-crystals is confirmed by XRD and HRTEM analysis. Near-infrared emission due to transition of Yb3+ ions under 485nm excitation indicates cooperative energy transfer from Tb3+ to Yb3+. The quantum efficiency of this process reaches 145%. The realization of quantum cutting in glass ceramics may have promising applications in solar cells.
Abstract：We report on cooperative quantum cutting in Tb3+-Yb3+ codoped glass ceramics. Precipitation of BaF2 nano-crystals is confirmed by XRD and HRTEM analysis. Near-infrared emission due to transition of Yb3+ ions under 485nm excitation indicates cooperative energy transfer from Tb3+ to Yb3+. The quantum efficiency of this process reaches 145%. The realization of quantum cutting in glass ceramics may have promising applications in solar cells.
[1] Piper W W, de Luca J A and Ham F D 1974 J. Lumin. 8 344 [2] Sommerdijk J L, Bril A and de Jager A W 1974 J. Lumin. 8 41 [3] Pappalardo R 1976 J. Lumin. 14 159 [4] Wegh R T, Donker H, Oskam K D and Meijerink A 1999 Science 283 663 [5] Vergeer P et al %, Vlugt T J H, Kox M H F, Den Hertog M I, vander%Eerden J P J M and Meijerink A2005 Phys. Rev. B 71 014119 [6] Wegh R T, Donker Hand Meijerink A 1997 Phys. Rev. B 56 13841 [7] Wegh R T, van Loef E V D and Meijerink A 2000 J. Lumin. 90111 [8] Liu B, Chen Y, Shi C, Tang H and Tao Y 2003 J. Lumin. 101 155 [9] Khaidukov N M et al %, Lam S K, Lo D, Makhov V N and Suetin N V2002 Opt. Mater. 19 365 [10] odama N and Watanabe Y 2004 Appl. Phys. Lett. 84 4141 [11] Lee T J et al %, Luo L Y, Diau D G, Chen T M, Cheng B M and Tung C Y2006 Appl. Phys. Lett. 89 131121 [12] Zhang Q Y, Yang C H and Pan Y X 2007 Appl. Phys. Lett. 90021107 [13] Zhang Q Y, Yang G F and Jiang Z H 2007 Appl. Phys.Lett. 91 051903
2008, Vol. 25 
