Ecole Polytechnique Federale De Lausanne

Asulab S.a.

Huazhong University of Science and Technology

Ecole Polytechnique Féderale De Lausanne (epfl)

Shaik Mohammad Zakeeruddin

Michael Graetzel

Peng Wang

Michael Gratzel

David Fraser

Mohammad Khaja Nazeeruddin

Feifei Gao

Chengcheng Xi

Yiming Cao

Michaël Graetzel

Jean-Paul Randin

Erik Jan Frenkel

Florian Kessler

Jing Zhang

Etienne Baranoff

Fabrizio Giordano

Kun Cao

Chenyi Yi

Péter Péchy

Mingfei Xu

Oliver Kohle

Mohammed K Nazeeruddin

Stephan Ruile

Cédric Klein

Francois P Rotzinger

Henry J Snaith

Daibin Kuang

Cêdric Klein

Hao Qin

Zing Zhang

Hoi Nok Tsao

Aswani Yella

Jun-Ho Yum

Yan Shen

Zhixiang Zuo

Jin Cui

Mingkui Wang

The invention discloses a perovskite solar cell and a method of fabrication thereof. The perovskite solar cell sequentially comprises a transparent electrode, a mesoporous P-I-N framework and a counter electrode from the bottom to top; the mesoporous P-I-N framework is composed of an n-type semiconductor layer, an insulating layer, and a p-type semiconductor layer in a sequentially stacked mode, and the n-type semiconductor layer, the insulating layer and the p-type semiconductor layer all comprise mesopores filled with a perovskite material. The preparation method sequentially includes preparing the mesoporous P-I-N framework on a transparent conductive substrate through a spin-coating method or a screen printing method, filling with the perovskite material and preparing the counter electrode layer.

Mesoscopic framework for organic-inorganic perovskite based photoelectric conversion device and method for manufacturing the same

The present invention relates to compounds of formula (I) based on a porphyrin core and a &#x3c0;-conjugated linker or acceptor introduced between the porphyrin core and an anchoring group having a high absorption coefficient covering the whole UV-Visible and near-infrared spectral response, and their use as sensitizer or dye and an electrochemical or optoelectronic device including a compound of the invention.

Porphyrin based sensitizer for dye-sensitized solar cell

The present invention provides an improved redox couple for electrochemical and optoelectronic devices. The redox couple is based on a complex of a first row transition metal, said complex containing at least one mono-, bi-, or tridentate ligand comprising a substituted or unsubstituted ring or ring system comprising a five-membered N-containing heteroring and/or a six-membered ring comprising at least two heteroatoms, at least one of which being a nitrogen atom, said five- or six-membered heteroring, respectively, comprising at least one double bond. The invention also relates to electrolytes and to the devices containing the complex, and to the use of the complex as a redox couple. The invention further provides electrochemical and/or optoelectronic devices comprising a first and a second electrode and, between said first and second electrode, a charge transport layer, said a charge transport layer comprising tetracyanoborate ([B(CN)]) and a cationic metal complex functioning as redox-couple.

Redox couple for electrochemical and optoelectronic devices

The present invention relates to modified surfaces. The surfaces comprise an inorganic material on which a phosphinic acid derivative is adsorbed. The phosphinic acid thus turns out to be a new anchoring group useful for surface derivatization. The invention has many applications for photoelectric conversion devices, batteries, capacitors, electrochromic displays, chemical sensors, biological sensors, light emitting diodes, electrodes, semiconductors, separation membranes, selective adsorbents, adsorbents for HPLC, catalysts, implants, nanoparticles, antiadhesives, and anticorrosion coatings, for example.

Modified surface

The present invention refers to using the principal of a room temperature molten ionic liquid, to an electrolyte, to devices comprising the ionic liquid co-melting, and to the preparation of a room temperature ionic liquid via various physical and chemical methods. The room temperature molten ionic liquid comprises at least two component salts, at least one of which is not molten at room temperature, but, if combined with another salt, is in the molten state at room temperature.

Eutectic melts

A dye sensitized solar cell, wherein a compacting compound whose molecular structure comprises a terminal group, a hydrophobic part and an anchoring group is co-adsorbed together with the dye on the semi-conductive metal oxide layer of the photoanode, forming a dense mixed self-assembled monolayer.

Dye sensitized solar cell

A dye sensitized solar cell, comprising a heteroleptic polypyridil complex of Ru, Os or Fe. The donating ligand has an extended conjugated &#x3c0;-system increasing the light absorbance and keeing the LUMO energy level higher than that of the anchoring ligand. A compacting compound whose molecular structure comprises a terminal group, a hydrophobic part and an anchoring group may be co-adsorbed together with the dye on the semi-conductive metal oxide layer of the photoanode, forming a dense mixed self-assembled monolayer.

2, 2-bipyridine ligand, sensitizing dye and dye sensitized solar cell

The present invention relates to electrolytes comprising tetracyanoborate and an organic cation as components of electrolytes in electrochemical and/or optoelectronic devices, in particular solar cells. This ionic liquid has low viscosity and can be used as electrolyte in the absence of a solvent. Importantly, the ionic liquid remains stable in solar cells even after prolonged thermal stress at 80&#xb0; C. for 1000 hours. Photovoltaic conversion efficiency remained stable and keeping more than 90% of the initial value.

Ionic liquid electrolyte

The present invention relates to optoelectronic and/or electrochemical devices comprising an organic charge transporting material which is liquid at a temperature of &#x2266;180&#xb0; C. In particular in dye-sensitised solar cells, quantum efficiency higher than with prior art solid organic hole-transporters is reported. The melting point of a large quantity of organic charge transporting materials may be adjusted to a desired value by selecting suitable substituents. Accordingly, general advantages of the liquid state may be associated with the properties of organic charge transporting materials.

Liquid charge transporting material

A dye sensitized solar cell, comprising a-heteroleptic polypyridil complex of Ru, Os or Fe. The donating ligand has an extended conjugated n-system increasing the light absorbance and keeing the LUMO energy level higher than that of the anchoring ligand. A compacting compound whose molecular structure comprises a terminal group, a hydrophobic part and an anchoring' group may be co-adsorbed together with the dye on the semi-conductive metal oxide layer of the photoanode, forming a dense mixed self-assembled monolayer.

2,2-bipyridine ligand, sensitizing dye and dye sensitized solar cell

Phosphonated polypyridyl compounds and their complexes

Complexes of the general formula I ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3, which may be the same or different, each represent a straight or branched alkyl radical having 1 to 5 carbon atoms or together with the adjacent nitrogen atom a heterocyclic radical having 5 to 7 carbon atoms; 'alk' represents a straight or branched alkylene radical having 1 to 5 carbon atoms; R.sub.4 to R.sub.8, which may be the same or different, represent hydrogen, or a hydroxy, alkoxy, aryloxy or primary secondary or tertiary amino group, or the group -alk-N.sup.+ (R.sub.1 R.sub.2 R.sub.3) wherein 'alk', R.sub.1, R.sub.2 and R.sub.3 have the meanings given above; M represents a transition metal such as Fe, Ru or Os; X represents an anion and n is an integer corresponding to the number of positive charges of the complex.

Transition metal complexes having 2,2'-bipyridine ligands substituted by

Mono, bis or tris(substituted 2,2'-bipyridine) iron, ruthenium, osmium

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Renens, Switzerland

Shaik Mohammad Zakeeruddin