Ambipolar Charge Carrier Transport in Organic Semiconductor Blends

Ambipolar Charge Carrier Transport in Organic Semiconductor Blends 

Markus Bronner, Andreas Opitz, and Wolfgang Briitting 

In this work we have chosen the combination of hole-conducting copper-phthalocyanine (CuPc) and the n-conducting fullerene C o, which are both known from organic photovoltaic cells either as heterolayer structures or bulk-heterojunctions [18-21]. They can be considered as model systems for ambipolar transport where the asymmetry of the electron and hole mobilities is adjustable by the concentration of both materials in the mixture. 

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