서지주요정보
Rare earth doping of hydrogenated amorphous silicon alloyed with carbon = 카본이 도핑된 수소화된 비정질 실리콘의 희토류원소 도핑에 관한 연구
서명 / 저자 Rare earth doping of hydrogenated amorphous silicon alloyed with carbon = 카본이 도핑된 수소화된 비정질 실리콘의 희토류원소 도핑에 관한 연구 / G. Kallo Mebratu.
저자명 Mebratu, G. Kallo ; 메브라투
발행사항 [대전 : 한국과학기술원, 2004].
Online Access 원문보기 원문인쇄

소장정보

등록번호

8015399

소장위치/청구기호

학술문화관(문화관) 보존서고

DPH 04003

휴대폰 전송

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초록정보

Rare 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.

서지기타정보

서지기타정보
청구기호 {DPH 04003
형태사항 vi, 50 p. : 삽도 ; 26 cm
언어 영어
일반주기 저자명의 한글표기 : 메브라투
지도교수의 영문표기 : Jung-H. Shin
지도교수의 한글표기 : 신중훈
학위논문 학위논문(박사) - 한국과학기술원 : 물리학과,
서지주기 Includes references
주제 TO 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
TO 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
희토류원소 도핑된 수소화된 비정질 실리콘의 희토류원소에 발광을 카본 도핑의 효과
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