ACNP and NILDE : essential tools for access to scientific research

<p>ACNP (The Italian Union Serial Catalogue), containing  more than 190,000 journals in various disciplines, and NILDE (Network Inter Library Document  Exchange), an online service that facilitates more than 800 libraries  to request and supply documents in a reciprocal manner, are two services based on similar management models linked with their users.                <br> ACNP and NILDE and their user communities in cooperation form the most important network for Italian libraries to share resources, services and professional practices and this represents a cooperation system working for the real access to scientific information which is hampered by high costs and restrictive policies.<br> The present talk illustrates both communities, focusing attention on the informational needs of the astronomical community.</p

ACNP and NILDE : essential tools for access to scientific research

<p>ACNP (The Italian Union Serial Catalogue), containing  more than 190,000 journals in various disciplines, and NILDE (Network Inter Library Document  Exchange), an online service that facilitates more than 800 libraries  to request and supply documents in a reciprocal manner, are two services based on similar management models linked with their users.                <br> ACNP and NILDE and their user communities in cooperation form the most important network for Italian libraries to share resources, services and professional practices and this represents a cooperation system working for the real access to scientific information which is hampered by high costs and restrictive policies.<br> The present talk illustrates both communities, focusing attention on the informational needs of the astronomical community.</p

Designing Small Molecules as Ternary Energy-Cascade Additives for Polymer:Fullerene Solar Cell Blends

Designing Small Molecules as Ternary Energy-Cascade Additives for Polymer:Fullerene Solar Cell Blend

Photonic Flash Sintering of Ink-Jet-Printed Back Electrodes for Organic Photovoltaic Applications

A study of the photonic flash sintering of a silver nanoparticle ink printed as the back electrode for organic solar cells is presented. A number of sintering settings with different intensities and pulse durations have been tested on both full-area and grid-based silver electrodes, using the complete emission spectrum of the flash lamps from UV-A to NIR. However, none of these settings was able to produce functional devices with performances comparable to those of reference cells prepared using thermally sintered ink. Different degradation mechanisms were detected in the devices with a flash-sintered back electrode. The P3HT:PCBM photoactive layer appears to be highly heat-sensitive and turned out to be severely damaged by the high temperatures generated in the silver layer during the sintering. In addition, UV-induced photochemical degradation of the functional materials was identified as another possible source of performance deterioration in the devices with grid-based electrodes. Reducing the light intensity does not provide a proper solution because in this case the Ag electrode is not sintered sufficiently. For both types of devices, with full-area and grid-based electrodes, these problems could be solved by excluding the short wavelength contribution from the flash light spectrum using a filter. Optimized sintering parameters allowed manufacture of OPV devices with performance equal to those of the reference devices. Photonic flash sintering of the top electrode in organic solar cells was demonstrated for the first time. It reveals the great potential of this sintering method for the future roll-to-roll manufacturing of organic solar cells from solution