Er3+ excited state absorption and the low fraction of nanocluster-excitable Er3+ in SiOx

被引:32
作者
Oton, C. J. [1 ]
Loh, W. H.
Kenyon, A. J.
机构
[1] Univ Southampton, Optoelect Res Ctr, Southampton SO17 1BJ, Hants, England
[2] UCL, Dept Elect & Elect Engn, London WC1E 7JE, England
基金
英国工程与自然科学研究理事会;
关键词
D O I
10.1063/1.2227637
中图分类号
O59 [应用物理学];
学科分类号
摘要
Despite the observation by a number of groups of a strong luminescence sensitization effect of erbium ions by excitation exchange from silicon nanoclusters, there is considerable experimental evidence that the fraction of Er ions excited by Si-nc is actually very low for much of the material reported. In this work, we examine the evidence and point out that Er excited state absorption is the likely cause. (c) 2006 American Institute of Physics.
引用
收藏
页数:3
相关论文
共 13 条
[1]   Role of the interface region on the optoelectronic properties of silicon nanocrystals embedded in SiO2 -: art. no. 085327 [J].
Daldosso, N ;
Luppi, M ;
Ossicini, S ;
Degoli, E ;
Magri, R ;
Dalba, G ;
Fornasini, P ;
Grisenti, R ;
Rocca, F ;
Pavesi, L ;
Boninelli, S ;
Priolo, F ;
Spinella, C ;
Iacona, F .
PHYSICAL REVIEW B, 2003, 68 (08)
[2]   1.54 mu m photoluminescence of Er3+ doped into SiO2 films containing Si nanocrystals: Evidence for energy transfer from Si nanocrystals to Er3+ [J].
Fujii, M ;
Yoshida, M ;
Kanzawa, Y ;
Hayashi, S ;
Yamamoto, K .
APPLIED PHYSICS LETTERS, 1997, 71 (09) :1198-1200
[3]   Photoluminescence from SiO2 films containing Si nanocrystals and Er:: Effects of nanocrystalline size on the photoluminescence efficiency of Er3+ [J].
Fujii, M ;
Yoshida, M ;
Hayashi, S ;
Yamamoto, K .
JOURNAL OF APPLIED PHYSICS, 1998, 84 (08) :4525-4531
[4]   Optimized conditions for an enhanced coupling rate between Er ions and Si nanoclusters for an improved 1.54-μm emission [J].
Gourbilleau, F ;
Levalois, M ;
Dufour, C ;
Vicens, J ;
Rizk, R .
JOURNAL OF APPLIED PHYSICS, 2004, 95 (07) :3717-3722
[5]   The characteristic carrier-Er interaction distance in Er-doped a-Si/SiO2 superlattices formed by ion sputtering [J].
Jhe, JH ;
Shin, JH ;
Kim, KJ ;
Moon, DW .
APPLIED PHYSICS LETTERS, 2003, 82 (25) :4489-4491
[6]   Luminescence from erbium-doped silicon nanocrystals in silica: Excitation mechanisms [J].
Kenyon, AJ ;
Chryssou, CE ;
Pitt, CW ;
Shimizu-Iwayama, T ;
Hole, DE ;
Sharma, N ;
Humphreys, CJ .
JOURNAL OF APPLIED PHYSICS, 2002, 91 (01) :367-374
[7]   Gain limiting processes in Er-doped Si nanocrystal waveguides in SiO2 [J].
Kik, PG ;
Polman, A .
JOURNAL OF APPLIED PHYSICS, 2002, 91 (01) :534-536
[8]   Exciton-erbium interactions in Si nanocrystal-doped SiO2 [J].
Kik, PG ;
Polman, A .
JOURNAL OF APPLIED PHYSICS, 2000, 88 (04) :1992-1998
[9]   Optical gain at 1.5 μm in nanocrystal Si-sensitized Er-doped silica waveguide using top-pumping 470 nm LEDs [J].
Lee, J ;
Shin, JH ;
Park, N .
JOURNAL OF LIGHTWAVE TECHNOLOGY, 2005, 23 (01) :19-25
[10]   Excited state absorption in the Si nanocluster-Er material system [J].
Loh, WH ;
Kenyon, AJ .
IEEE PHOTONICS TECHNOLOGY LETTERS, 2006, 18 (1-4) :289-291