Ecole Polytechnique Federale De Lausanne

Solvay (societe Anonyme)

Asulab S.a.

Solvay Sa

Koninklijke Philips Corporation N.V.

Panasonic Corporation

Huazhong University of Science and Technology

Director-general of Agency of Industrial Science and Technology

Ems Inventa Ag

Universitat De Valéncia

Aalto University Foundation

Renata Ag

Kaunas University of Technology

Westonbridge International Limited

Ecole Polytechnique Féderale De Lausanne (epfl)

Michael Graetzel

Mohammad Khaja Nazeeruddin

Shaik Mohammad Zakeeruddin

Shaik Mohammed Zakeeruddin

Peng Wang

Etienne Baranoff

Feifei Gao

Florian Kessler

Cedric Klein

Jing Zhang

Fabrizio Giordano

Anders Hagfeldt

Etienne David Baranoff

Robert Plass

Udo Bach

Brian O'Regan

Michael Saliba

Chenyi Yi

Chengcheng Xi

Yiming Cao

Julian Burschka

Vytautas Getautis

Rene Theodorus Wegh

Rudolf Dinger

Eric Saurer

Maryte Daskeviciene

Timothy Malcome Spitler

Jean-Paul Randin

Tadas Malinauskas

Jan Prochazka

Hironori Arakawa

Taisuke Matsui

Kazuhiro Sayama

Ivan Exnar

Peter Péchy

Hideki Sugihara

Alessandro Abbotto

Steve Klink

David Martineau

David Fraser

Olga Malinkiewicz

Syed Ghufran Hashmi

Kun Cao

Mingfei Xu

Peter Bäuerle

Lioz Etgar

Jaejung Ko

Norberto Manfredi

Sanghyun Paek

Nara Cho

Xiong Li

Péter Péchy

Artiom Magomedov

Lok Pratap Singh

Patrick Poscio

Jared Delcamp

Wolfgang Richard Tress

Hao Qin

Mingkui Wang

Cêdric Klein

Zhixiang Zuo

Nicholas Evans

Jin Cui

Henry J Snaith

Merve Ozkan

Cedric Nicolas Klein

Yella Aswani

Ladislav Kavan

François Sugnaux

Yan Shen

Jan Augustynski

Neha Arora

Marina Freitag

Mohammad Ibrahim Dar

Michael Bauer

Yuhang Liu

Andreas G Kay

Gianluca Pozzi

Jun-Ho Yum

Ary Saaman

Aswani Yella

Simonetta Orlandi

Hoi Nok Tsao

Klaus-Hermann Dahmen

Paul Gratia

Yuan Wang

Thomas Wesley Holcombe

Jun Ho Yum

Hendrik Jan Bolink

Konrad Domanski

Zing Zhang

Dongqin Bi

Alejandra Soriano Portillo

Jiyoun Seo

Chiara Marinzi

Filippo De Angelis

Peng Qin

Hong Zhang

Mohammad Nazeeruddin

The organic small molecule 4,4',4&#x2033;,4&#x2032;&#x2033;-(5,5-dimethoxycyclopenta-1,3-diene-1,2,3,4-tetrayl)tetrakis(N,N-bis(4-methoxyhenyl)aniline (CPDA 1), shows electrochemical properties very close to spiro-OMeTAD indicating a high compatibility with PSC systems for its use as a hole transport material (HTM). The implementation of the cyclopentadiene dimethyl acetale core helps to red shift the absorption onset of the films as well as provide a flexible spatial configuration of the molecule, which is essential for optimum film forming properties. Transient and steady state emission analysis as well as hole mobility measurements indicate that the new HTM allows a better charge extraction, transport and separation than the spiro-OMeTAD reference compound. PSCs based on the new CPDA 1 show a PCE close to 23% with lower hysteresis than its analogue. Stability studies performed under ambient, heated and humid conditions all showed that CPDA 1 is over-performing spiro-OMeTAD. Furthermore the production cost of CPDA 1 is about 10 times lower than that of spiro-OMeTAD, contributing to render PSCs more affordable.

Hole transport material, synthesis thereof, and solar cell

The invention relates to an optoelectronic and/or photoelectrochemical device including a conductive support layer, n-type semiconductor, a sensitizer or light-absorber layer, a hole transporting layer, a spacer layer and a back contact, wherein the n-type semiconductor is in contact with the sensitizer or light-absorber layer, the sensitizer or light-absorber layer includes a perovskite or metal halide perovskite material, the hole transporting layer is in direct contact with the sensitizer or light-absorber layer and includes an inorganic hole transporting material or inorganic p-type semiconductor, the spacer layer is between the hole transporting layer and the back contact and includes a material being different from the inorganic hole transporting material and the material of the back contact.

Inorganic hole conductor based perovskite photoelectric conversion device with high operational stability at long term

The present invention relates to a method for producing a solid state solar cell, including the steps of providing a conductive support layer or current collector, applying a metal oxide layer on the conducting support layer, applying at least one sensitizer layer onto the metal oxide layer or onto a first optional layer covering the metal oxide layer, the first optional layer including a charge transporting layer, applying a second optional layer onto the sensitizer layer, the second optional layer being selected from a charge transporting layer, a protective layer, or a combination of both layers, and providing a counter electrode or a metal electrode onto the sensitizer layer or the second optional layer. The at least one sensitizer layer includes an organic-inorganic or metal halide perovskite and is treated by the application of a vacuum before the annealing of the sensitizer.

High efficiency large area perovskite solar cells and process for producing the same

A perovskite material including an organic-inorganic perovskite structure of formula (I), AMX(I), n being the number of cation A and an integer &#x3e;4, A being a monovalent cation selected from inorganic cations Ai and/or from organic cations Ao, M being a divalent metal cation or a combination thereof, X being a halide and/or pseudohalide anion or a combination thereof, wherein at least one cation A is selected from organic cations Ao, the inorganic cations Ai are independently selected from Li, Na, K, Rb, Cs, or Tland the organic cations Ao are independently selected from ammonium (NH), methyl ammonium (MA) (CHNH), ethyl ammonium (CHCHNH), formamidinium (FA) (CH(NH)), methylformamidinium (CHC(NH)), guanidium (C((NH))), tetramethylammonium ((CH)N), dimethylammonium ((CH)NH) or trimethylammonium ((CH)NH).

Mixed cation perovskite solid state solar cell and fabrication thereof

The present invention provides a method for depositing an organic-inorganic perovskite, the method comprising the step of depositing a perovskite precursor solution comprising one or more organic cation, wherein said precursor solution preferably deposited by inkjet printing. The method is particularly useful in the manufacture of perovskite solar cells. For depositing the perovskite, a perovskite precursor solution or ink is preferably used, which comprises an organic cation carrying an anchoring group, such as 5-ammonium valeric acid. Surprisingly, the presence of the latter compound renders the precursor solutions stable and suitable for inkjet printing.

Method for inkjet printing an organic-inorganic perovskite

The present invention relates to a compound of formula (I) based on a structure including functionalized spirofluorene and fused aromatics or non-aromatic rings with at least one heteroatom, and used as hole transporting material in a optoelectronic and/or photoelectrochemical device.

Functional hole transport materials for optoelectronic and/or electrochemical devices

The present invention relates to a compound of formula (I) based on carbazole substituted by diphenylamine and used as organic hole conductors or hole transporting material in an optoelectronic or photoelectrochemical device, with (I), D being selected from formula (1) or (2): 

Small molecule hole transporting material for optoelectronic and photoelectrochemical devices

The present invention relates to a method for producing a solid solar cells, including the steps of providing a hole collector layer, applying a conductive layer onto the hole collector layer, applying an electron blocking layer onto the conductive layer, applying a sensitizer layer onto the electron blocking layer, applying a hole blocking layer onto the sensitizer layer, and providing a current collector and/or a metal layer or a conductor. The sensitizer layer including an organic-inorganic perovskite is applied by co-deposition of one or more sublimated divalent or trivalent salts and of one or more sublimated organic ammonium salts to obtain the organic-inorganic perovskite. The invention also relates to solid state solar cells, wherein the charge flow is inverted compared to the charge flow in a solar cell of conventional architecture and/or obtained by the above method.

Inverted solar cell and process for producing the same

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 photoanodes, solar cells and methods and processes for producing the same. In some embodiments, the solar cells of the invention can do without a sintered nanoporous scaffold layer, making it possible to produce the solar cells in low-temperature procedures. In some embodiments, the invention encompasses organic-inorganic perovskite sensitizers, deposited on a smooth metal oxide layer. In some embodiments, the organic-inorganic perovskite sensitizers are deposited in a two-step sequential process.

Solar cell and process for producing the same

The invention relates to electrochemical devices comprising complexes of cobalt comprising at least one ligand with a 5- or six membered, N-containing heteroring. The complex are useful as p- and n-dopants, as over of electrochemical devices, in particular in organic semiconductors. The complexes are further useful as over-discharge prevention and overvoltage protection agents.

Metal complexes for use as dopants and other uses

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 novel compounds that are useful as ligands in organometallic dyes. More particularly, the invention relates to dyes comprising the compounds, said dyes being sensitizing dyes useful in solar cell technology. According to an embodiment, the present invention discloses new ruthenium dyes and their application in dye-sensitized solar cells (DSC). The referred ruthenium dyes with new structural features can be easily synthesized, show more than 85% light-to-electricity conversion efficiency and a higher than 9% cell efficiency.

High molecular extinction coefficient metal dyes

The present invention relates to compounds of formula (I) based on DPP moiety being useful as metal-free organic sensitizers or dyes of type D-&#x3c0;-A in electrochemical or optoelectronic devices, their use as sensitizer or dye and an electrochemical or optoelectronic device comprising a compound of the invention. 

Diketopyrrolopyrole (DPP)-based sensitizers for electrochemical or optoelectronic devices

Growing community of inventors

St-Sulpice, Switzerland

Michael Graetzel