N-DOPING OF ORGANIC SEMICONDUCTORS

The doping of inorganic materials has been instrumental in the progress of the semiconductor industry. For organics major advances were largely enabled by p-doped (hole transporting) materials, while useful n-doped (electron-transporting) materials have been limited in chemical accessibility, doping efficiency, electron mobility and conductivity. Recently, we discovered that metal nanoparticles (e.g., Au) can catalytically assist/accelerate the doping of representative organic semiconductors by a molecular dopant (N-DMBI-H). The result for these semiconductors is greatly enhanced n-doping efficiency and electrical conductivity raising intriguing questions concerning the detail of the doping process, scope, and ultimate impact.

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