Commissariat a L'energie Atomique

Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Commissariat {dot Over (a)} L'ėnergie Atomique Et Aux Énergies Alternatives

Renaud Demadrille

Yann Kervella

Damien Joly

Adam Pron

Stéphane Guillerez

Muriel Firon

Marinella Mazzanti

Marion Giraud

Eugen Andreiadis

Jocelyne Leroy

Maxime Godfroy

Eugen Sorin Andreiadis

David Aradilla

The present invention concerns an organic dye comprising a photochromic entity, a segment -eD representing an electron donor segment and a segment -L-A with -L- representing a covalent bond or a spacer segment and particularly a pi-conjugated spacer segment, and -A representing an electron attractor segment able to form a covalent bond with a semi-conductor. The present invention concerns the use thereof as photosensitizer in a photovoltaic device and said photovoltaic device.

Organic photochromic dye and uses thereof for dye sensitized solar cells

An organic dye corresponding to one of the following structures (I) or (II): eD-pi-conjugated chromophore-L-A (I), or A-L-pi-conjugated chromophore-eD (II), where eD represents an electron donor segment, L represents a covalent bond or a spacer segment and in particular a pi-conjugated spacer segment, A represents an electron acceptor segment capable of forming a covalent bond with a semiconductor, in which the pi-conjugated chromophore comprises at least one unit of formula (III): in which the radicals R1 and R2, which are identical or different, represent an optionally substituted aryl group; the radicals R3 to R8, which are identical or different, represent a hydrogen, an optionally substituted alkyl group or an optionally substituted aryl group; and X1 and X2, which are identical or different, are chosen from S, Se and O.

Organic dye with improved efficiency and uses thereof in photovoltaic cells

The present invention relates to an organic colorant corresponding to one of the following structures (I) or (II):eD-pi-conjugated chromophore-L-A&#x2003;&#x2003;(I)A-L-pi-conjugated chromophore-eD&#x2003;&#x2003;(II)

Organic colourant and uses thereof in photovoltaic cells

The invention relates to the use of compounds comprising at least one 2-(1H-tetrazol-5-yl)pyridine unit, of formula (I) below: as ligands for lanthanides and, more especially, as organic chromophores for complexing these elements. It also relates to lanthanide complexes using these compounds as complexing organic chromophores, and to new compounds containing one or more 2-(1H-tetrazol-5-yl)pyridine units, which are useful as ligands for lanthanides and, in particular, as organic chromophores for complexing these elements. Applications: photonics and optoelectronics, especially for forming light-emitting devices such as electroluminescent diodes; biology, as for example for the preparation of luminescent probes.

Compounds useful as ligands and particularly as organic chromophores for complexing lanthanides and applications thereof

The inventive method for placing and fixing (bonding) a first object, whose surface is functionalized by compounds of formula I Y (X), A' (I), on the surface of a second object whose surface is functionalized by compounds of formula II Y (X)A (II), wherein A and A&#x2032; are functional groups enabling to be bonded at least by a link in a covalent manner to an object surface X and X&#x2032; are aliphatic, linear, branched or cyclic spacers which can comprise one or several hetero or aromatic, or heteroaromatic atoms or consist of several aromatic or heteroaromatic cycles and optionally of alternating aliphatic chains having aromatic or heteroaromatic groups, n and n&#x2032;=0 or 1 and Y and Y are functions for generating one or several non-covalent bonds wherein said Y or Y&#x2032; are selected such that they are complementary or can complex a metal atom or an identical metal compound.

Compounds for placing objects by self assembling and the use thereof

Monomeric, oligomeric or polymeric compound corresponding to the following formula (I):   Use of the said compound in an optoelectronic device, such as a photovoltaic cell, a field-effect transistor or an electrochemical sensor. Photovoltaic cell comprising an active layer comprising an electron donor composed of the said compound.

Growing community of inventors

Saint Egreve, France

Renaud Demadrille