Eni S.p.a.

Enichem S.p.a

Polimeri Europa S.p.a.

Enichem Elastomeri Srl

Centre National De La Recherche Scientifique

Eniricerche S.p.a.

Encichem Elastomeri S.r.l.

Paolo Biagini

Roberto Santi

Gabriele Lugli

Giampietro Borsotti

Viviano Banzi

Piero Andreussi

Fabio Garbassi

Francesco Masi

Liliana Gila

Stefano Ramello

Giampiero Borsotti

Jean Roncali

Dora Demeter

Antonio Alfonso Proto

Giuliana Schimperna

Riccardo Po'

Riccardo Po

Philippe Leriche

Gianfranco Longhini

Alessandro Abbotto

Roberto Provera

Stefano Maiorana

Fausto Calderazzo

Maria Caldararo

Roberto Fusco

Andrea Pellegrino

Daniela Belli Dell'Amico

Stefanio Bonsignore

Laura Boggioni

Diego Vigliarolo

Maria Rivellini, Legal Representative

Laura Santi, Legal Representative

Luigi Abis

Stefano Santi, Legal Representative

Maurizio Filippo Acciarri

Simona Olga Binetti

Norberto Manfredi

Mario Salvalaggio

Alessandra Merigo

Emanuela Licandro

Aurora Rizzo

Antonella Giuri

Silvia Colella

Franco Cambisi

Francesco Bisconti

Lucia Bonoldi

Lorenzo Veronese

Simona Losio

Massimiliano Brivio

A semi-transparent perovskite-based photovoltaic cell (or solar cell), wherein the photoactive perovskite layer includes at least one polysaccharide-based inert polymer in an amount ranging between 0.5% by weight and 3.5% by weight, preferably ranging between 1% by weight and 3% by weight, more preferably ranging between 1.5% by weight and 2.8% by weight, with respect to the total weight of the perovskite precursors. The semi-transparent perovskite-based photovoltaic cell (or solar cell) can be advantageously used in various applications that require the production of electricity through the exploitation of light energy, in particular solar radiation energy such as, for example: building integrated photovoltaic (BIPV) systems; photovoltaic windows; greenhouses; photo-bioreactors; noise barriers; lighting; design; advertising; automotive industry. Said semi-transparent perovskite-based photovoltaic cell (or solar cell) can be used either in a 'stand alone' mode or in modular systems.

Semi-transparent perovskite-based photovoltaic cells and process for preparing them

There is a process for preparing polycarbonate. The process has the step of copolymerizing an epoxy compound and carbon dioxide (CO) in the presence of a catalytic system having at least one catalyst selected from complexes of a transition metal having general formula (I): The aforesaid process allows to obtain polycarbonates having a quantity of carbonate bonds in chain greater than 95% or polycarbonate/polyether copolymers having a quantity of ether bonds in chain ranging from 15% to 90%.

Process for preparing polycarbonate and catalytic system used

The present invention relates to a process for preparing polycarbonate comprising copolymerizing an epoxy compound and carbon dioxide (CO) in the presence of a catalytic system comprising:

An organic dye for a dye-sensitized solar cell (DSSC) comprising at least one electron-acceptor unit and at least one &#x3c0;-conjugated unit is described. Said organic dye is particularly useful in a dye-sensitized photoelectric transformation element which, in its turn, can be used in a dye-sensitized solar cell (DSSC).

Organic dye for dye-sensitized solar cell

Organic dye for a dye-sensitized solar cell (DSSC) comprising at least one electron-acceptor unit and at least one &#x3c0;-conjugated unit. Said organic dye is particularly useful in a dye-sensitized photoelectric transformation element which, in its turn, can be used in a dye-sensitized solar cell (DSSC).

Organic dye for a dye-sensitized solar cell

Organic dye for a dye sensitized solar cell (DSSC) comprising at least one substituted pyrrole group. Said organic dye is particularly useful in a dye sensitized photoelectric transformation element which, in its turn, can be used in a dye sensitized solar cell (DSSC).

Organic dye for a dye sensitized solar cell

Electrode comprising a conductive substrate on which a uniform layer of aggregates A, having an average diameter ranging from 40 to 100 nm, is deposited, on which a non-homogeneous distribution of aggregates B, having an average diameter ranging from 300 nm to 1,200 nm, is superimposed, both of said aggregates being composed of particles containing one or more metals Me selected from platinum, palladium and gold, having an average diameter ranging from 8 to 10 nm. The use of said electrode, as cathode, for DSSC devices produces a marked improvement in the performances of the cell with respect to the results that can be obtained with known cathodes.

Electrode for solar cells and preparation method

Organic dye for a Dye Sensitized Solar Cell (DSSC) comprising at least one electron donor group and at least two electron acceptor groups, each of said electron acceptor groups being bound to said electron donor group through a &#x3c0;-conjugated unit. Said organic dye is particularly useful in a dye sensitized photoelectric transformation element, which, in its turn, can be used in a Dye Sensitized Solar Cell (DSSC).

Compound comprising a benzoetherodiazole group of formula (I) and at least one benzodithiophene group or a mixture of compounds comprising a benzoetherodiazole group and at least one benzodithiophene group of formulae (II) and (III). Both said compound and said mixture of compounds can be advantageously used as spectrum converters in luminescent solar concentrators (LSCs), capable, in their turn, of enhancing the performances of solar devices (i.e. devices for exploiting solar energy) such as, for example, photovoltaic cells, photoelectrolytic cells.

Benzodithiophene derivatives and their use as photoluminescent compounds

A catalytic composition for the selective oligomerization of ethylene and a process for preparing light linear (&#x3b1;-olefins, especially 1-hexene and 1-octene, starting from ethylene, using this composition, said composition comprising the following components: (A) a compound of a transition metal M of Group 4 of the periodic table; (B) an organic compound containing the sulfonic group (&#x3e;SO) bonded to two carbon atoms; (C) a hydrocarbyl organometallic compound of a metal M' selected from elements of Groups 1, 2, 12, 13 or 14 of the periodic table; components (A), (B) and (C) being in such a quantity that the atomic ratios respectively of the metal M in (A), of the sulfur S in the sulfonic group of (B) and of the metal M&#x2032; in (C), respect the following proportions: S/M=(from 0 to 20)/1 and M&#x2032;/M=(from 2 to 2000)/1, on the condition that when the compound of the metal M in component (A) is not a sulfonic complex of M, the S/M ratio is greater than 0.5, preferably greater than 1.

Catalytic composition and process for the selective oligomerization of ethylene to light linear alpha-olefins

A process is described for the purification of lanthanide carboxylates which comprises a step in which the hydrocarbon solution deriving from the synthesis of lanthanide carboxylate, containing said carboxylate and impurities of the corresponding carboxylic acid and/or water, is treated with an aqueous solution of a base in order to obtain a pH of the aqueous phase ranging from 9.0 to 12.2 and/or a step in which the hydrocarbon solution containing lanthanide carboxylate is treated with a solid selected from NaSO, MgSO, Mg(ClO), molecular sieves 3 &#x212b;, molecular sieves 4 &#x212b;, molecular sieves 5 &#x212b; and molecular sieves 13 X. Analytical methods are also described, which allow the purity of the lanthanide carboxylates to be non-destructively measured.

Process for the purification of lanthanide carboxylates

A process is described for the preparation of ethylene copolymers having a wide molecular weight distribution, characterized in that it is carried out in the presence of meso- and rac-stereoisomeric mixtures of metallocene compounds having general formula (I), wherein A' and A&#x2033;, the same or different, are a radical of the &#x3b7;?5-tetrahydroindenyl type (Ia) 

Process for the preparation of ethylene copolymers

The present invention relates to metallocene compounds consisting of indenyl-cyclopentadienyl groups non-symmetrically joined by a bivalent radical. Said compounds can be conveniently used as components of catalysts for the polymerization of olefins.

Bridged metallocene compounds as olefin-polymerization catalysts

New polycyclic cyclopentadiene compounds having the formula (II) wherein the various substituents and symbols R1, R2, R3, R4, R5, R6, R7, Z1 and Z2 and 'n' have the meaning specified in the description. These compounds can form metallocene complexes with transition metals, which have shown unusual properties in the (co)polymerization of ethylene and alpha-olefins in general.

Substituted polycyclic cyclopentadienes and method for their preparation

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San Giuliano Terme, Italy

Paolo Biagini