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대한화학회 제105회 학술발표회 및 총회 Single-walled carbon nanotube three-dimensional networks: Synthesis and applications for photovoltaic devices

등록일
2010년 2월 3일 11시 09분 58초
접수번호
0032
발표코드
금27H3구 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 14시 : 50분
발표형식
구두발표
발표분야
물리화학 - 물리화학에서의 최근 연구
저자 및
공동저자
이태재, 서정은1, 민선기1, 이문근1, 여해구1, 이하진2, 이해원1, 한성환1
한양대학교 나노과학기술연구소, Korea
1한양대학교 화학과, Korea
2한국기초과학지원연구원 전주센터, Korea
Carbon nanotubes (CNTs) are an ideal electrode material because of their good conductivity, high aspect ratio with nano-sized diameters, and strong chemical and physical hardnesses. Therefore, CNTs can be used for efficient nano-electrodes in sensors, photo-electronic devices, and alternative sources of energy including solar-cell and fuel-cell applications. Here, we suggest an advanced three-dimensional (3D) electrode structure which consists of high-density single-walled carbon nanotube (SWNT) 3D networks (-3DNs) and a 3D-structured Si pillar template. A Si pillar template was prepared by a deep Si etching process, and the SWNT-3DNs were synthesized over the Si pillars by thermal chemical vapor deposition. Then, a sandwich-type photoelectrochemical (PEC) cell was fabricated by coating the SWNT-3DNs with a quantum dot (QD). SEM, TEM, and Raman analysis was used to characterize the SWNT-3DNs. The results confirmed that the high-density SWNT-3DNs assure the maximum effective density of SWNTs in the confined area of the template. Coating the 3D surface of SWNT-3DNs with functional materials is much important to extend the application fields of SWNT-3DNs. We will also discuss about coating SWNT-3DNs with functional materials by various techniques including an electrochemical deposition and an atomic layer deposition. We expect that the SWNT-3DNs will be useful for fabricating highly efficient nano-electrodes having a large active surface area with the desired spacing.

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