Rare earth doping of hydrogenated amorphous silicon alloyed with carbon = 카본이 도핑된 수소화된 비정질 실리콘의 희토류원소 도핑에 관한 연구

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dc.contributor.advisorShin, Jung-H.-
dc.contributor.advisor신중훈-
dc.contributor.authorMebratu, G. Kallo-
dc.contributor.author메브라투-
dc.date.accessioned2011-12-14T07:23:48Z-
dc.date.available2011-12-14T07:23:48Z-
dc.date.issued2004-
dc.identifier.urihttp://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=237498&flag=dissertation-
dc.identifier.urihttp://hdl.handle.net/10203/47335-
dc.description학위논문(박사) - 한국과학기술원 : 물리학과, 2004.2, [ vi, 50 p. ]-
dc.description.abstractRare Earth(RE) doped carbon co-doped hydrogenated amorphous silicon films were prepared by electron cyclotron - plasma enhanced chemical vapor deposition of $SiH_4$ and $CH_4$ with concurrent sputtering of RE target. Increase in carbon concentration causes increase in optical band gap with out significant effect on structural disorder, resulting in improved $Er^{3+}$ photoluminescence intensity and reduced temperature quenching. Room temperature $Er^{3+}$ photoluminescence intensity was observed to increase fourfold in carbon doped film. However, low temperature and high resolution $Er^{3+}$ photoluminescence spectra has the same peak position and similar peak shape both for carbon doped and carbon free films. Low temperature pump power dependent $Er^{3+}$ PL intensity together with time resolved $Er^{3+}$ photoluminescence was analyzed using the rate equation for linear excitation rate. The result indicated that improvement in $Er^{3+}$ photoluminescence intensity in carbon doped film was mainly due to increase in luminescence efficiency. $Nd^{3+}$ photoluminescence observed for the first time from Nd doped carbon co-doped hydrogenated amorphous silicon was well described using the excitation and de-excitation through Nd-related state.eng
dc.languageeng-
dc.publisher한국과학기술원-
dc.subjectTO STUDY THE EFFECT OF CARBON CO-DOPING ON THE ER(3+) PL IN RELATION TO ITS INFLUENCE ON THE STRUCTURAL AND OPTOELECTRONIC PROPERTIES OF A-SI:H-
dc.subject희토류원소 도핑된 수소화된 비정질 실리콘의 희토류원소에 발광을 카본 도핑의 효과-
dc.subjectTO STUDY THE ND(3+) PL IN ND DOPED A-SI:H:C AND CHECK THE VALIDITY AND UNIVERSALITY OF EXCITATION MECHANISMS APPLIED FOR ER(3+) ION-
dc.titleRare earth doping of hydrogenated amorphous silicon alloyed with carbon = 카본이 도핑된 수소화된 비정질 실리콘의 희토류원소 도핑에 관한 연구-
dc.typeThesis(Ph.D)-
dc.identifier.CNRN237498/325007 -
dc.description.department한국과학기술원 : 물리학과, -
dc.identifier.uid000994003-
dc.contributor.localauthorMebratu, G. Kallo-
dc.contributor.localauthor메브라투-
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