Fig. 2From: Improved Work Function of Poly(3,4-ethylenedioxythiophene): Poly(styrenesulfonic acid) and its Effect on Hybrid Silicon/Organic Heterojunction Solar CellsSurface potential images of PEDOT:PSS layers fabricating form PEDOT:PSS solution containing different volumes of H2PtCl6 probed by SKPM for a 0%, b 5%, c 10%, and d 15%. All the measurements are carried out by using the same conductive tip. All the sale bars are 1 × 1 μmBack to article page