The authors demonstrate a method of texturing a meshed surface on a poly(dimethyl siloxane) (PDMS) film for improving light extraction. This meshed surface is fabricated through a casting process by using a self-organized porous film as a template. Experimental results show that the light outcoupling efficiency increases on the meshed surface of a freestanding PDMS film with large incident angles. The external quantum efficiency of an organic light-emitting diode with the textured PDMS film was also demonstrated to have an enhancement of 46%.

The authors investigated the anode work function modified by series of self-assembled monolayers comprising alkanethiols and perfluorinated alkanethiols with different alkyl lengths on pentacene/fullerene thin-film organic solar cells. Via selecting different types of self-assembled molecules, the anode work function can be tailored for modifying the interfacial barrier. The measured open-circuit voltages indicated reduced anode work function that tends to form Schottky contact. The maximal open-circuit voltage and short-circuit current were measured to be 0.4V and 17.7mA∕cm2, respectively, in the case of anode work function modified by perfluorinated alkanethiols. The power conversion efficiency is 2.24%.

Na-, K-, Ba-, and Ca-Y were employed for the separation of fructose and glucose in an adsorption column. Effects of temperature, solvent flow rate, amount of mixture injection, and exchangeable cations on the separation were investigated. Efficiency of separation was used as a criterion to characterize the effectiveness of the separation. The transport and kinetic parameters for the column separation were also presented. From simple pulse experiments and moment analysis, the obtained process information of equilibrium and dynamic parameters might be used to design, operate, and control the separation column.

Silver nanowires are prepared by electroplating into an anodic aluminium oxide (AAO) template. After the AAO template was removed by chemical etching, the surface of Ag nanowires was further modified by pulse DC electroplating. Various Ag nanobranches are grown on the surface of the Ag nanowire. This study discusses the influence of the pulse DC voltage and bias on the surface morphologies of Ag nanowires. The curvature of the nanowire surface is found to be the main factor in the growth of nanobranches. The surface morphology of the nanowire is adjustable by changing its growth rate. Radii of curvatures of the surfaces of approximately 33, 12 and 3 nm are obtained by electroplating at 1, 3 and 4 V DC voltages, respectively. The crystal size of a nanowire determined by x-ray diffraction analysis is almost independent of the growth conditions. Pulse DC electroplating conditions yield different growth rates of the nanobranch and create various surface morphologies of the nanowire. A more highly curved surface has a more localized charge and grows nanobranches faster. Surface roughness dominates the growth of nanobranches from silver nanowire.

This study presents a flexible substrate using poly(dimenthylsiloxane) (PDMS) to fabricate organic light-emitting diodes (OLEDs). To reduce surface roughness and enhance surface stiffness necessary for OLED fabrication, we optimized the constituents of PDMS precursor and introduced a strength-enhancement layer, which comprises Al 2 O 3 nanoparticles, and embedded it near the surface. Experimental results showed the tris(8-hydroxyquinolinato) aluminum (Alq3)-based OLEDs fabricated on the substrate can be successfully turned on at a low threshold voltage of 2.2 V with a bending radius of 3.0 cm. #