Solution-processed cross-linkable hole selective layer for polymer solar cells in the inverted structure

Solution-processed cross-linkable tetraphenyldiamine-containing material (TPD-BVB) as a highly efficient hole selective transport layer was demonstrated. Polymer solar cells (PSCs) with an inverted structure fabricated with a thin cross-linked TPD-BVB film show comparable efficiency and superior long-term air stability when compared to devices fabricated with poly (3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS). Thus, solution-processed TPD-BVB is an attractive alternative to PEDOT: PSS as a hole extraction layer in inverted structure PSCs. (C) 2010 American Institute of Physics. [doi:10.1063/1.3518074]