| 초록 |
Excited state absorption measurement can be used to quantify the population of triplet states in polymer films and device, but this measurement depends on the value of the triplet-triplet absorption cross-section, which in not well known. In the first section of this talk, the measurement of the triplet-triplet absorption cross-section of a conjugated polymer, F8BT, by using quasi-steady-state photo-induced absorption technique in phosphorescent dye blended polymer film will be discussed. Recent studies show that using the triplet exciton in polymer photovoltaic device improves efficiency of photovoltaic device. In the second section of this talk, the triplet exciton dynamics of a conjugated polymer in heavy metal complex blended photovoltaic device and effect of triplet exciton on the photovoltaic device efficiency will be discussed. |
