Wiktionary
perfluoropentacene
n. (context organic compound English) The completely fluorinated derivative of pentacene; it is an organic semiconductor
Wikipedia
Perfluoropentacene
Perfluoropentacene (PFP) is an n-type organic semiconductor, which is made by fluorination of the p-type semiconductor pentacene. It has a blueish-black color, and is used for molecular thin-film devices (like OLEDs or OFETs).