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  • 09월 05일 23시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제128회 대한화학회 학술발표회, 총회 및 기기전시회 Transparent luminescent solar concentrator assisted by energy transfer between quantum dots and hexarhenium cluster dyes

2021년 8월 19일 16시 16분 06초
MAT.P-430 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 14일 (목요일) 11:00~12:30
Material Chemistry
저자 및
Jun Choi, Sung-Jin Kim1,*
Department of Chemistry and Nano Science, Ewha Womans University, Korea
1Department of Chemistry, Ewha Womans University, Korea
Luminescent solar concentrator (LSC) is a solar-light harvesting device that concentrates sun light on a photovoltaic cell placed at the edge of an LSC panel to convert it into electricity. The nano-sized inorganic–organic cluster complex (dMDAEMA)4[Re6S8(NCS)6] (this refers to RMC where dMDAEMA is 2-dimethyl amino ethyl methacrylate) is a promising candidate for LSC luminophores due to its downshifted broad photoluminescence suitable for photovoltaic cells. However, the low photoluminescent quantum yield (PLQY) of RMC limits the performance. Here, zinc-doped CuGaS/ZnS core/shell quantum dots (ZQD) were used as energy transferring donor with high PLQY to enhance the performance of the LSC. The two metal chalcogenide luminophores, RMC and ZQD, are chemically suitable for dispersion in an amphiphilic polymer matrix, resulting in a transparent waveguide with suppressed reabsorption and extended harvesting coverage of the solar spectrum. We achieved an ηopt of 3.47% and a PCE of 1.23% while maintaining greater than 80% transparency in the visible range. The performance of this device was also evaluated by measuring the current density over distance and proved to be more stable when the two dyes were used together. The high performance of this dual-dye LSC with suppressed reabsorption, and scattering losses is not only due to uniform dispersion of dyes in a polymer matrix, but also energy transfer from ZQD to RMC. This report suggests a new possibility for promising various multi-dye LSCs for use in building-integrated photovoltaic (BIPV) windows.