期刊
ADVANCED ENERGY MATERIALS
卷 1, 期 4, 页码 626-633出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201100110
关键词
-
类别
资金
- Israel Science Foundation founded by The Israel Academy of Science and Humanities
- Weizmann Institute Alternative Energy Research Initiative
- Wolfson charitable fund
In this article, the physics of FRET is demonstrated for an architecture of dye-sensitized solar cells, in which the quantum dot antennas that serve as donors are incorporated into the solid titania electrode, providing isolation from electrolyte quenching, and potentially increased photostability. The energy transferred to the dye acceptor from the quantum dot donor, in addition to the direct light absorption by the dye, finally induce dye excitation and electron injection to the metal oxide semiconductor electrode. We use time-resolved photoluminescence measurements to directly show achievement of FRET efficiencies of up to 70%, corresponding to over 80% internal quantum efficiency when considering radiative energy transfer as well. The various parameters governing the FRET efficiency and the requirements for high efficiency FRET-based cells are discussed. Since both buried donors inside the electrode and donors solubilized in the electrolyte have both been shown to achieve high energy transfer efficiencies, and as the two methods take advantage of different available volumes of the electrode to introduce donors providing the excess absorption, synergy of the two methods is highly promising for achieving panchromatic absorption within a thin electrode.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据