Effects of contact metals on electroluminescence from embedded nanosize-Si-particle films

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	Effects of contact metals on electroluminescence from embedded nanosize-Si-particle films
	G. G. Qin; A. P. Li; Y. X. Zhang
	1996
发表期刊	Physical Review B
ISSN	0163-1829
卷号	54 期号:16 页码:11122-11125
摘要	Sandwich structures composed of metal and Si external layers with an intermediate embedded nanosize-Si-particle insulator layer have been fabricated. The insulator layer is composed of extra thin (similar to 80 Angstrom) Si-rich silicon dioxide (ETSSO) films or extra thin (similar to 80 Angstrom) silicon oxynitride (ETSON) films. Semitransparent An, Pd, Ag, and Al films were used as contact metals. The effects of metal contacts on electroluminescence (EL) from the structures under forward biases are reported. For structures with either ETSSO and ETSON insulator layers, the EL peak positions appear at a distinctly longer wavelength when the contact metal has a large work function, such as Au or Pd, when compared with structures where the contact metal has a lower work function, such as Ag or Al. For a single contact metal, the EL peak position is almost independent of forward biases. The experimental results are difficult to be explained with a model of band to band radiative recombination of electron-hole pairs in nanosize Si particles, but can be better explained by a model in which electrons and holes tunnel into the insulator layer and radiatively recombine at the luminescence centers there. The metal work functions affect which types of luminescence centers determine the EL.
部门归属	acad sinica,int ctr mat phys,shenyang 110015,peoples r china.;qin, gg (reprint author), beijing univ,dept phys,beijing 100871,peoples r china
关键词	Au Porous-si Oxide P-si Visible Electroluminescence Silicon Diodes Photoluminescence
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/38377
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	G. G. Qin,A. P. Li,Y. X. Zhang. Effects of contact metals on electroluminescence from embedded nanosize-Si-particle films[J]. Physical Review B,1996,54(16):11122-11125.
APA	G. G. Qin,A. P. Li,&Y. X. Zhang.(1996).Effects of contact metals on electroluminescence from embedded nanosize-Si-particle films.Physical Review B,54(16),11122-11125.
MLA	G. G. Qin,et al."Effects of contact metals on electroluminescence from embedded nanosize-Si-particle films".Physical Review B 54.16(1996):11122-11125.