Role of the Blend Ratio in Polymer:Fullerene Phototransistors
Posted on 2020-07-09 - 14:08
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.
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Trujillo Herrera, Cinthya; Hong, Min Ji; Labram, John G. (2020). Role of the Blend Ratio in Polymer:Fullerene Phototransistors. ACS Publications. Collection. https://doi.org/10.1021/acsaelm.0c00445