Title :
Infra-red surface plasmons on platinum silicide
Author :
Sellai, A. ; Dawson, P. ; Hendren, W.R. ; Gamble, Harold S.
Author_Institution :
Dept. of Pure & Appl. Phys., Queens Univ., Belfast, UK
Abstract :
It is shown that surface plasmons (SPs) are supported on thin PtSi films. Using a prism-air gap-sample configuration, p-polarised infra-red light (3.39 mu m) has been coupled with approximately 95% efficiency to SPs on the silicide electrode of PtSi-Si Schottky barrier structures, stimulating SPs offers both a means of optically characterising silicide films and of enhancing optical absorption with a view to significantly increasing the Schottky barrier photoresponse.
Keywords :
Schottky effect; elemental semiconductors; infrared detectors; platinum compounds; semiconductor-metal boundaries; silicon; surface plasmons; 3.39 micron; 95 percent; IR surface plasmons; PtSi-Si; Schottky barrier structures; optical absorption; p-polarised infra-red light; photoresponse; prism-air gap-sample configuration; silicide electrode; thin PtSi films;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19920102
