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NTIS 바로가기한국태양에너지학회 논문집 = Journal of the Korean Solar Energy Society, v.39 no.4, 2019년, pp.25 - 39
송형준 (서울과학기술대학교 안전공학과)
Luminescent solar concentrator (LSC), consisting of luminophore included glass or substrate with edge-mounted photovoltaic cell, is semi-transparent, energy harvesting devices. The luminophore absorbs incident solar light and re-emit photons, while the waveguide plate allows re-emitted photons to re...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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건물일체형 태양광 발전 시스템이란 무엇인가? | 태양광 발전 시스템은 현재 대규모 발전 단지를 기반으로 설치 용량이 급증하고 있으며, 도심에서는 건물의 에너지 효율 상승 및 송배전 거리 최소화를 위한 건물 일체형 태양광 발전 시스템(Building integrated photovoltaic)에 대한 수요가 급증하고 있다. 건물일체형 태양광 발전 시스템은 건물과 어울리는 색상을 가진 태양광 모듈을 건물의 벽면이나 옥상에 배치하여 태양광을 전기로 변환시키는 방법이다. 태양광 모듈은 빛을 흡수해서 전기로 변환시키기에 색상이 불투명한 단점이 있어, 투명한 유리창 부분을 대체할 수 있는 태양광 시스템에 대한 필요성이 대두되고 있다. | |
발광형 태양광 집광기의 전망은 어떠한가? | 그 중 한 방법이 발광형 태양광 집광기(Luminescent solar concentrator)이다. 발광형 태양광 집광기는 용액 공정으로 일반 유리창에 제작이 가능하고, 태양광 시장의 90% 이상을 차지하는 실리콘 태양전지와 결합이 용이하기에 향후 건물의 창문을 이용한 태양광 발전에 널리 사용될 것으로 예상된다. 또한 수명 측면에서도 이미 검증된 발광체(Luminophore)들과 결정질 실리콘 태양전지를 사용하기에 장시간 운영 에도 큰 문제 없이 사용할 수 있다. | |
반투명 태양전지의 단점은 무엇인가? | 태양전지에 들어가는 광 흡수층을 얇게 형성하고, 투명한 전극들을 이용하면 반투명 태양광 시스템 구현이 가능하다 2,3) . 하지만 이 방식의 경우 주로 사용되는 박막 태양광 모듈의 수명 문제로 건물에서 요구하는 유리창 규격에 맞지 않는 단점들이 지적되고 있다. 또한 가격이 비싸서 시장 확대에 한계가 지적되고 있다. 이를 극복하기 위해 공정이 단순하고, 가격 경쟁력 확보가 가능한 창문형 태양광 발전 시스템에 대한 방법들이 제시되고 있다. |
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