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Libero Zuppiroli

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Cubic and oriented Ag nano-particles by high vacuum evaporation

Ag cubes of uniform size (70nm) and self-assembled into two dimensional arrays are formed by physical vapor deposition. The formation of the Ag cubes depends critically on the substrate composition. While heat dissipation can control the crystallization of ...

Nano Science and Technology Institute, Cambridge, MA 02139, United States2006

Charge transport across organic-organic interfaces in organic light-emitting diodes

Libero Zuppiroli, Eduard Tutis, Hocine Houili

The process of hopping transport across organic heterojunctions is critical to the function of organic light-emitting diodes (OLED) and many other currently developed organic electronic devices. We consider the case of a hole-only or homopolar heterojuncti ...

Elsevier2006

Investigation of the charge transport through disordered organic molecular heterojunctions

Libero Zuppiroli, Eduard Tutis, Hocine Houili

We present a three-dimensional multiparticle Monte Carlo (3DMPMC) simulation of hopping transport in disordered organic molecular media. We used this approach in order to study the charge transport across an energetically disordered organic molecular heter ...

AIP2006

Efficient blue light-emitting diodes based on a classical "push-pull" architecture molecule 4,4 prime -di-(2-(2,5- dimethoxyphenyl)ethenyl)-2,2 prime -bipyridine

Michael Graetzel, Mohammad Khaja Nazeeruddin, Libero Zuppiroli, Rosario Scopelliti, Philippe Bugnon, Detlef Berner, Filippo de Angelis, Mauro Castellani

A novel, highly blue luminescent molecule containing donor and acceptor groups, 4,4 prime -di-(2-(2,5-dimethoxyphenyl)ethenyl)-2,2 prime -bipyridine, that shows photoluminescence emission at 450 nm with 43% quantum yield is designed and synthesized. Time d ...

Royal Society of Chemistry2006

Counterion effects in cyanine heterojunction photovoltaic devices

Frank Nüesch, Antonin Faes, Libero Zuppiroli

We investigated cyanine heterojunction photovoltaic devices using carbocyanine dyes as donors and buckminsterfullerene (C60) as acceptor. In particular, we focused on the influence of cyanine counterions on the photovoltaic device characteristics. It was f ...

2005

Doping-induced charge trapping in organic light-emitting devices

Frank Nüesch, Libero Zuppiroli, Detlef Berner, Eduard Tutis, Xiao Wang

By using pyran-containing donor-acceptor dyes as doping molecules in organic light-emitting devices (OLEDs), we scrutinize the effects of charge trapping and polarization induced by the guest molecules in the electro-active host material. Laser dyes 4-(dic ...

Wiley-VCH2005

Comparison between nucleation of pentacene monolayer islands on polymeric and inorganic substrates

Frank Nüesch, Libero Zuppiroli

We present a comparative study of the nucleation and growth of pentacene monolayer islands in the submonolayer regime onto inorganic substrates of SiO2 and sapphire (Al2O3) and organic substrates of poly(methyl-metacrylate) ...

2005

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Efficient blue light-emitting diodes based on a classical "push-pull" architecture molecule 4,4 prime -di-(2-(2,5- dimethoxyphenyl)ethenyl)-2,2 prime -bipyridine

Michael Graetzel, Mohammad Khaja Nazeeruddin, Libero Zuppiroli, Rosario Scopelliti, Philippe Bugnon, Detlef Berner, Filippo de Angelis, Mauro Castellani

Royal Society of Chemistry2006

Libero Zuppiroli

Graph Chatbot

Cubic and oriented Ag nano-particles by high vacuum evaporation

Charge transport across organic-organic interfaces in organic light-emitting diodes

Investigation of the charge transport through disordered organic molecular heterojunctions

Efficient blue light-emitting diodes based on a classical "push-pull" architecture molecule 4,4 prime -di-(2-(2,5- dimethoxyphenyl)ethenyl)-2,2 prime -bipyridine

Counterion effects in cyanine heterojunction photovoltaic devices

Doping-induced charge trapping in organic light-emitting devices

Comparison between nucleation of pentacene monolayer islands on polymeric and inorganic substrates

Tuneable planar photonic crystals

Tuneable planar photonic crystal devices

Optical characterization of tunable planar photonic crystals

Cubic and oriented Ag nano-particles by high vacuum evaporation

Charge transport across organic-organic interfaces in organic light-emitting diodes

Investigation of the charge transport through disordered organic molecular heterojunctions

Efficient blue light-emitting diodes based on a classical "push-pull" architecture molecule 4,4 prime -di-(2-(2,5- dimethoxyphenyl)ethenyl)-2,2 prime -bipyridine

Counterion effects in cyanine heterojunction photovoltaic devices

Doping-induced charge trapping in organic light-emitting devices

Comparison between nucleation of pentacene monolayer islands on polymeric and inorganic substrates

Tuneable planar photonic crystals

Tuneable planar photonic crystal devices

Optical characterization of tunable planar photonic crystals