Organic semiconductors have attracted interest for electronic applications due to their potential for use in low-cost, large-area, flexible electronic devices. In this talk I will discuss the development of metallocenes-based dimers as n-dopants for use in semiconductors, 2D materials and electrodes, and their resulting impact on material properties and device performance. In particular I will focus on the application of photo-induced doping of low electron affinity compounds using air-stable organometallic compounds. The mechanism of doping and the application of the doping for fabrication of organic light emitting diodes (OLEDs) will be discussed. I will also briefly discuss recent work on the development of materials that have small excited state singlet-triplet energy gaps, which may be of interest as hosts or emitters for OLED applications.
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