Direct Laser Writing: Direct Laser Writing of Complementary Logic Gates and Lateral p–n Diodes in a Solution‐Processible Monolithic Organic Semiconductor (Adv. Mater. 15/2010)

Jean‐Charles Ribierre and co‐workers report on the conversion of the majority carrier type by laser irradiation in solution‐processed organic thin films based on a quinoidal oligothiophene derivative ( p. 1722 ). Patterning of p‐type and n‐type microstructures is achieved by direct laser writing and can be visualized using a Kelvin‐probe force microscope. The method is extremely promising for the fabrication of CMOS logic circuits and lateral p‐n diodes based on a monolithic solution‐processible organic semiconductor.