Pulse 전위를 적용한 전기화학적 증착 공정으로 제조된 가시광 활성 이종접합 CuInS2-TiO2 Nanotube 화합물 광전극

• 영문명: Visible Light-Driven CuInS2-TiO2 Nanotube Composite Photoelectrodes with Heterojunction Structureusing Pulsed-Electrochemical Deposition Process
• 발행기관: 한국응용과학기술학회 (구.한국유화학회)
• 저자명: 윤정호(Jung-Ho Yun) Rose Amal 박영구(Young-Koo Park)
• 간행물 정보: 『한국응용과학기술학회지』한국유화학회지 제30권 제1호, 49~56쪽, 전체 8쪽
• 주제분류: 공학 > 화학공학
• 파일형태: PDF
• 발행일자: 2013.03.30

영문 초록

Excellent electron transport properties with enhanced light scattering ability for light harvesting have made well-ordered one dimensional TiO2 nanotube(TNT) arrays an alternative candidate over TiO2 nanoparticles in the area of solar energy conversion applications. The principal drawback of TNT arrays being activated only by UV light has been addressed by coupling the TNT with secondary materials which are visible light-triggered. As well as extending the absorption region of sunlight, the introduction of these foreign components is also found to influence the charge separation and electron lifetime of TNT. In this study, a novel method to fabricate the TNT-based composite photoelectrodes employing visible responsive CuInS2 (CIS) nanoparticles is presented. The developed method is a square wave pulse-assisted electrochemical deposition approach to wrap the inner and outer walls of a TNT array with CIS nanoparticles. Instead of coating as a dense compact layer of CIS by a conventional non-pulsed-electrochemical deposition method, the nanoparticles pack relatively loosely to form a rough surface which increases the surface area of the composite and results in a higher degree of light scattering within the tubular channels and hence a greater chance of absorption. The excellence coverage of CIS on the tubular TiO2 allows the construction of an effective heterojunction that exhibits enhanced photoelectrochemical performance.

목차

1. 서 론

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References

키워드

solar energy nanotube photoelectrodes electrochemical non-pulsed-electrochemical