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- W2512543397 abstract "Luminescent solar concentrators (LSCs) can potentially reduce the cost of solar cells by decreasing the photoactive area of the device and boosting the photoconversion efficiency (PCE). This study demonstrates the application of giant CdSe/Cdx Pb1-x S core/shell quantum dots (QDs) as light harvesters in high performance LSCs with over 1.15% PCE. Pb addition is critical to maximize PCE. First, this study synthesizes giant CdSe/Cdx Pb1-x S QDs with high quantum yield (40%), narrow size distribution (<10%), and stable photoluminescence in a wide temperature range (100-300 K). Subsequently these thick alloyed-shell QDs are embedded in a polymer matrix, resulting in a highly transparent composite with absorption spectrum covering the range 300-600 nm, and are applied as active material for prototype LSCs. The latter exhibits a 15% enhancement in efficiency with respect to 1% PCE of the pure-CdS-shelled QDs. This study attributes this increase to the contribution of Pb doping. The results demonstrate a straightforward approach to enhance light absorption in giant QDs by metal doping, indicating a promising route to broaden the absorption spectrum and increase the efficiency of LSCs." @default.
- W2512543397 created "2016-09-16" @default.
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- W2512543397 date "2016-08-12" @default.
- W2512543397 modified "2023-10-16" @default.
- W2512543397 title "Absorption Enhancement in “Giant” Core/Alloyed-Shell Quantum Dots for Luminescent Solar Concentrator" @default.
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- W2512543397 doi "https://doi.org/10.1002/smll.201600945" @default.
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