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

页码：4020 / 4024

页数：5

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