Because of their ability to combine detection and processing into a single element, phototransistors have the potential to be a disruptive optical-detection technology. Unfortunately, however, at present the relationship between current and incident optical power density is complicated and poorly understood. In this report, we investigate how the ratio of polymer to fullerene affects the performance of organic phototransistors. We find the surprising result that even a small percentage (1% by weight) of polymer can modify the optical response of organic phototransistors to green light significantly. Polymer:fullerene phototransistors such as those demonstrated in this report have the combined advantages of being highly optically transparent to the excitation wavelength and being unipolar.

中文翻译：

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共混比在聚合物：富勒烯光电晶体管中的作用

由于光电晶体管具有将检测和处理结合为一个元件的能力，因此有可能成为一种破坏性的光学检测技术。然而，不幸的是，目前，电流与入射光功率密度之间的关系是复杂的，并且了解得很少。在这份报告中，我们研究了聚合物与富勒烯的比例如何影响有机光电晶体管的性能。我们发现令人惊讶的结果，即使是很小百分比的聚合物（按重量计1％）也可以显着改变有机光电晶体管对绿光的光学响应。聚合物：富勒烯光电晶体管（如本报告中所述）具有综合的优势，即对激发波长高度光学透明，并且是单极性的。