Photoluminescence and photoluminescence excitation spectroscopy of Er-doped Si prepared by laser ablation

被引:14
作者
Ng, WL [1 ]
Temple, MP [1 ]
Childs, PA [1 ]
Wellhofer, F [1 ]
Homewood, KP [1 ]
机构
[1] Univ Surrey, Sch Elect Engn Informat Technol & Math, Guildford GU2 5XH, Surrey, England
关键词
D O I
10.1063/1.124324
中图分类号
O59 [应用物理学];
学科分类号
摘要
Strong room-temperature photoluminescence (PL) peaks of Er3+ (I-4(13/2)-->I-4(15/2)) ions at similar to 1.535 mu m are obtained from Er-doped thin-film Si layers prepared by laser ablation. The Si sample was found to produce optimum photoluminescence peaks at an annealing temperature of about 450 degrees C. Experimental results also shows that the thermal quenching of the luminescence intensity from 80 K to room temperature is a factor of 2.5 only. PL excitation measurements reveal that the Er luminescence is significantly excited via the silicon band edge. The lifetime of the luminescence from the Si:Er samples is 90+/-10 mu s. (C) 1999 American Institute of Physics. [S0003-6951(99)02427-4].
引用
收藏
页码:97 / 99
页数:3
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