Single-Component Bipolar FETs

Separately engineering distinct contacts for hole-electron injection in bipolar OFETs will facilitate more efficient injection of the two types of carriers, but at the same time it will make the device realization more complex. 

For the realization of narrow band gap polymers, a useful synthetic strategy consists in copolymerizing an electron-rich and an electron-poor unit, to obtain a donor-acceptor structure. An example of this alternating donor-acceptor architecture has been reported by Jenekhe [36] with the synthesis of the copolymer PNIBT consisting of an electron-donating dialkoxybithiophene and 

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