| 학회 |
한국화학공학회 |
| 학술대회 |
2016년 가을 (10/19 ~ 10/21, 대전컨벤션센터) |
| 권호 |
22권 2호, p.2343 |
| 발표분야 |
첨단소재의 개발 및 응용에 대한 최신동향 심포지엄 (우성일 교수 정년기념)(재료부문위원회) |
| 제목 |
Oxygen diffusion barrier coated on a transparent AZO electrode for dye-sensitized/perovskite solar cells |
| 초록 |
Developing thermally stable TCOs which are more conductive and transparent than fluorine-doped tin oxide (FTO) is a promising strategy to increase the efficiency of dye-sensitized or perovskite solar cells. The aluminum-doped zinc oxide (AZO), which is cheap with good TCO properties, is unfortunately unstable above 300 oC in air. The first priority to enhance its thermal stability is to establish mechanisms of electrical deterioration of AZO films at high temperatures. In this study, the insulating aluminum oxide formation at surface of AZO films as well as the decrease of oxygen vacancies at high temperatures turned out to be the reason for the decrease of conductivity. Both AlOx formation and decrease of oxygen vacancies are caused by oxygen adsorption, thus the oxygen diffusion barrier can help prevent these phenomena. Here, ZnF2 and SnO2 thin films were used as a barrier layer. Oxygen barrier/Al-doped zinc oxide double-layered transparent conducting oxides showed enhanced thermal stability and suitable optical properties for the solar cells after the high temperature process in air. |
| 저자 |
우성일 |
| 소속 |
한국과학기술원 생명화학공학과 |
| 키워드 |
Transparent conducting oxide; Aluminum-doped zinc oxide; Thermal stability; Oxygen diffusion barrier
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| 원문파일 |
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