Achieving the photon up-conversion thermodynamic yield upper limit by sensitized triplet-triplet annihilation

被引：138
|
作者：
Hoseinkhani, S. [1 ]
Tubino, R. [1 ]
Meinardi, F. [1 ]
Monguzzi, A. [1 ]
机构：
[1] Univ Milano Bicocca, Dipartimento Sci Mat, I-20125 Milan, Italy
来源：
PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 2015年 / 17卷 / 06期
关键词：
SOLAR-CELLS; FLUORESCENCE; PERYLENE; LIGHT; FUSION;
D O I：
10.1039/c4cp03936j
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Triplet-triplet annihilation (TTA) based up-conversion is a promising strategy for light harvesting the low-energy tail of the solar spectrum with photovoltaic technologies. Here, we present a bi-component system for photon managing via TTA that allows bypassing the classical statistic limit of 2/5 in the singlet generation, achieving a near unitary conversion efficiency. This result is obtained because of the peculiar relative position of the triplet and singlet energy levels of perylene, used as up-converter and emitter. The system shows a record red-to-blue external up-conversion yield of similar to 10% under an irradiance of 1 sun.
引用
收藏
页码：4020 / 4024
页数：5
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