Theory of photogeneration and fluorescence quenching
Theory of photogeneration and fluorescence quenching
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光生和荧光猝灭理论
DOI：
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发表时间：
1979
期刊：
影响因子：
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通讯作者：
K. Hong
中科院分区：
文献类型：
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作者：
J. Noolandi;K. Hong
本文给出了一对带相反电荷的粒子在原点处有限半径的部分吸收球的边界条件下的成对复合几率的精确解。在无限复合速度（κ→∞）和消失半径（a→0）的极限下，我们恢复了Onsager的著名结果。我们使用的解决方案中制定的模型的光生和荧光猝灭的有机固体，热化长度是可比的晶格间距。作为一个例子，我们分析了无x金属酞菁的荧光猝灭和量子效率数据，假设完全内部转换和没有热化长度的极端情况。我们讨论了由广义逃逸概率的解确定的小外加场的斜率截距比的形式。
We give the exact solution of the geminate recombination probability of a pair of oppositely charged particles, corresponding to the boundary condition of a partly absorbing sphere of finite radius at the origin. In the limit of an infinite recombination velocity (κ→∞) and a vanishing radius (a→0) we recover the well‐known result of Onsager. We use the solution in the formulation of a model of photogeneration and fluorescence quenching in organic solids, with thermalization lengths which are comparable to the lattice spacing. As an illustration we analyze fluorescence quenching and quantum efficiency data for x‐metal‐free phthalocyanine, assuming the extreme case of complete internal conversion and no thermalization length. We discuss the form of the slope‐to‐intercept ratio for small applied fields determined from the solution for the generalized escape probability.