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서제형,정승욱,이원선,최윤성,최명운,최진철,최광호,Seo, J.H.,Jung, S.W.,Lee, W.S.,Choi, Y.S.,Choi, M.W.,Choi, J.C.,Jeong, K.H. 한국진공학회 2013 Applied Science and Convergence Technology Vol.22 No.1
$600{\times}1,200mm$ 기판에 대면적 CIGS 광흡수층 증착을 위한 선형증발원 개발을 위해 다른 크기의 노즐과 일정한 노즐 간격을 가지는 선형증발원의 플럭스 밀도를 전산 모사하여 플럭스 균일도 ${\pm}5%$의 조건을 구하였다. 이를 바탕으로 제작된 선형증발원을 이용하여 Cu, In의 단일막 두께균일도를 확인하였고, CIGS 광흡수층을 동시증발법으로 증착하여 박막의 두께균일도 및 증착 조성의 균일도로 선형증발원을 평가하였다. XRF 조성 분석을 통해 구한 조성불균일도는 600 mm 폭에서 $$Cu{\leq_-}5%$$, $$In{\leq_-}7%$$, $$Ga{\leq_-}4%$$, $$Se{\leq_-}3%$$으로 균일한 조성비로 성막된 것을 확인하였고 SEM 분석을 통해 표면 결정립의 형상을 확인하였다. 또한 XRD측정을 통해 선형증발원 방향의 대면적 CIGS 광흡수층이 칼코피라이트 구조임을 확인하였다. 이를 통해서 개발된 하향 선형증발원이 CIGS 광흡수층 증착에 적합함을 확인하였다. In this paper, to develop linear source for evaporating $600{\times}1,200mm$ size of large area CIGS absorber layer, we simulated linear thermal source and obtained ${\pm}5%$ thickness uniformity with various nozzle sizes and regular nozzle distance. Flux density was confirmed linear source length. Using this linear source, we tested thickness uniformity of Copper, Indium single layer which was obtained Cu ${\pm}5%$ and In ${\pm}5%$ thickness uniformity. And then CIGS absorber layers were evaporated with In-line single-stage co-evaporation. Large area CIGS absorber layers were confirmed composition uniformity of $$Cu{\leq_-}5%$$, $$In{\leq_-}7%$$, $$Ga{\leq_-}4%$$, $$Se{\leq_-}3%$$ with 600 mm width by XRF. Uniform shape of CIGS absorber layers was confirmed by SEM. XRD showed peaks which indicate chalcopyrite structure of CIGS absorber layers. Thus, developed linear source is suitable for evaporating CIGS absorber layer.
어승희 ( S. H. Euh ),이정빈 ( J. B. Lee ),최윤성 ( Y. S. Choi ),김대현 ( D. H. Kim ) 강원대학교 농업생명과학연구원(구 농업과학연구소) 2011 강원 농업생명환경연구 Vol.23 No.3
A photovoltaic/thermal (PVT) solar system is the technology that allows for simultaneous conversion of solar energy into both electricity and heat. PVT system consisted of PV module and thermal absorber plate unified has advantages of improving both the electrical and thermal performances, increasing aesthetic views, and reducing the space and material cost as compared to the separated PV module and solar thermal systems being placed side by side. In this study, the performance analysis of the PVT system was conducted. The maximum power generated was approximately 240W which was similar to the PV module specification, and the highest working fluid (water) temperature in the storage tank was 67℃ which was lower than the solar thermal system specification given due to blocking direct solar radiation to the absorber plate by PV module. The further investigation such as performance analysis compared with the separated PV module and solar thermal systems regarding power, flow rate of working fluid, packing factor needs to be performed.