Abstract: Disclosed herein are stable organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material having a sufficiently high glass transition temperature, e.g., higher than the temperature or temperature range at which the device typically operates, higher than a highest operating temperature of the device, higher than a threshold temperature value, etc. and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).

Abstract: A compound that can be used as a donor material in organic photovoltaic devices comprising a non-activated porphyrin fused with one or more non-activated polycyclic aromatic rings or one or more non-activated heterocyclic rings can be obtained by a thermal fusion process. The compounds include those having the following structure By heating the reaction mixture of non-activated porphyrins with non-activated polycyclic aromatic rings or heterocyclic rings to a fusion temperature and holding for a predetermined time, fusion of one or more polycyclic rings or heterocyclic rings to the non-activated porphyrin core in meso,? fashion is achieved resulting in hybrid structures containing a distorted porphyrin ring with annulated aromatic rings. The porphyrin core can be olygoporphyrins.

Abstract: An organic light emitting device having an anode, a cathode and an organic layer disposed between the anode and the cathode is provided.

Abstract: Disclosed herein are methods and compositions for the modulation of the activity of electrically excitable cells. In particular, several embodiments relate to the use of photovoltaic compounds which, upon exposure to light energy, increase or decrease the electrical activity of cells.

Abstract: A compound comprising a ligand LA according to formula (I) as well as, a first device and a formulation including the same are disclosed. In the structure of formula (I): ring A is a 5- or 6-membered heteroaryl ring; X1 is C or N; RA is mono-, bi-, tri-, tetradentate, or unsubstituted; RA, R10, R11, R12, R13, R14, R15, R16, and R17 are independently selected from the group consisting of hydrogen, deuterium, halide, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, and combinations thereof, any adjacent substituents of RA, R10, R11, R12, R13, R14, R15, R16, and R17 are optionally joined to form a fused ring; the dashed lines represent bonds to a metal M; and metal M has an atomic number greater than 40.

Abstract: Arrangements and techniques for providing organic emissive layers are provided, in which the emissive layer includes a first dopant having a dissociative energy level. A second dopant in the emissive layer provides a solid state sink energy level, to which doubly excited excitons and/or polarons may transition instead of to the dissociative energy level, thereby decreasing the undesirable effects of transitions to the dissociative energy level.

Abstract: Compounds that act as capture agents to sequester unsaturated metal complexes are provided. In particular, the compounds may be host materials, dopant materials, or dopant materials containing functional groups, such as an isocyanide or a phosphine group, which are suitable for trapping an unsaturated coordination complex. These compounds may be used in organic light emitting devices, particularly blue devices, to provide improved device lifetime.

Abstract: A compound having a structure according to formula (I) is disclosed. In formula (I), Cu is a monovalent copper atom; *C is a carbene carbon; X1 and X2 are selected from alkyl, cycloalkyl, alkoxy, amino, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, heteroalkynyl, arylalkyl, aryloxy, aryl, heteroalkyl, heteroaryl, and combinations thereof; X1 is bonded to *C by a C atom, and X2 is bonded to *C by an N atom; X1 and X2 are optionally joined to form a ring; and Y is selected halide, alkyl, cycloalkyl, alkoxy, amino, phosphine, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, heteroalkynyl, arylalkyl, aryloxy, aryl, heteroalkyl, heteroaryl, and combinations thereof. A formulation containing compound having a structure according to formula (I), and a device with an organic layer comprising disposed between an anode and a cathode, that includes a compound having a structure according to formula (I) are also described.

Abstract: A compound comprising a ligand LA selected from: as well as, devices and formulations containing the compound are disclosed. In the compounds, independently X1-X6 are CH or N; Y1-Y12 are independently selected from CH, N, and C-APR1?R1?; when present, exactly one of Y1 through Y12 is C-APR1?R1? in LA8; A is selected from a single bond, —CRARB—, —NRA—, —O—, —S— and —SiRARB—; and R, R1?, R1?, R2, R3, RA, and RB are each independently a substituent selected from hydrogen, deuterium, alkyl, cycloalkyl, aryl, and combinations thereof. The P-atom of the ligand LA is bonded to a metal M having an atomic weight of at least 40.

Abstract: The present disclosure relates to a photosensitive optoelectronic device comprising two electrodes, an inorganic subcell positioned between the two electrodes, wherein the inorganic subcell comprises at least one inorganic semiconductor material having a band gap energy (EG), and an organic sensitizing window layer disposed on the inorganic subcell. In one aspect, the organic sensitizing window layer comprises a singlet fission material. In another aspect, the organic sensitizing window layer comprises a singlet fission host and a phosphorescent emitter dopant, where the singlet fission host exhibits an excitation triplet energy (ET-SF) greater than or equal to an excitation triplet energy (ET-PE) exhibited by the phosphorescent emitter dopant.

Abstract: An organic light emitting device is disclosed in which the emissive dopant material in its organic emissive layer is an organic phosphorescent emissive material and a neat film of the organic phosphorescent emissive material is disposed between the organic emissive layer and the anode as an electron blocking layer.

Abstract: Disclosed herein are organic photosensitive devices including at least one exciton-blocking charge carrier filter. The filters comprise a mixture of at least one wide energy gap material and at least one electron or hole conducting material. As described herein, the novel filters simultaneously block excitons and conduct the desired charge carrier (electrons or holes).

Abstract: Arrangements and techniques for providing organic emissive layers are provided, in which the emissive layer includes a first dopant having a dissociative energy level. A second dopant in the emissive layer provides a solid state sink energy level, to which doubly excited excitons and/or polarons may transition instead of to the dissociative energy level, thereby decreasing the undesirable effects of transitions to the dissociative energy level.

Abstract: Compound libraries, systems, methods, and apparatus, including computer program apparatus, are described for implementing techniques for processing data from a combinatorial inquiry to determine materials of use in various photoelectronic devices, e.g., organic light emitting diodes. The libraries include a collection of putative compounds of use as components of OLED devices, which are cross-referenced with one or more electronic property relevant to the efficacy of the compounds in an OLED device. The techniques broadly include receiving data from a chemical experiment on a library of materials having a plurality of members and generating a queriable representation of the chemical experiment. The chemical experiment is optionally an in silico experiment.

Abstract: A compound having a structure according to wherein Y is a carbene moeity coordinated to a trivalent copper atom Cu is disclosed. In Formula I, L1, L2, and L3 are three monodentate ligands. In Formula II, L1, L2, and L3 represent a single tridentate ligand chelated by X, wherein X is B—H, C—H, N, P, or P?O.

Abstract: Arrangements and techniques for providing organic emissive layers are provided, in which the emissive layer includes a first dopant having a dissociative energy level. A second dopant in the emissive layer provides a solid state sink energy level, to which doubly excited excitons and/or polarons may transition instead of to the dissociative energy level, thereby decreasing the undesirable effects of transitions to the dissociative energy level.

Abstract: A compound having a structure according to formula (I) is disclosed. In formula (I), Cu is a monovalent copper atom; *C is a carbene carbon; X1 and X2 are selected from alkyl, cycloalkyl, alkoxy, amino, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, heteroalkynyl, arylalkyl, aryloxy, aryl, heteroalkyl, heteroaryl, and combinations thereof; X1 is bonded to *C by a C atom, and X2 is bonded to *C by an N atom; X1 and X2 are optionally joined to form a ring; and Y is selected halide, alkyl, cycloalkyl, alkoxy, amino, phosphine, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, heteroalkynyl, arylalkyl, aryloxy, aryl, heteroalkyl, heteroaryl, and combinations thereof. A formulation containing compound having a structure according to formula (I), and a device with an organic layer comprising disposed between an anode and a cathode, that includes a compound having a structure according to formula (I) are also described.

Abstract: The invention provides emissive materials and organic light emitting devices using the emissive materials in an emissive layer disposed between and electrically connected to an anode and a cathode. The emissive materials include compounds with the following structure: wherein at least one of R8 to R14 is phenyl or substituted phenyl, and/or at least two of R8 to R14 that are adjacent are part of a fluorenyl group. The emissive materials have enhanced electroluminescent efficiency and improved lifetime when incorporated into light emitting devices.

Abstract: A compound having a structure according to formula (I) is disclosed. In formula (I), Cu is a monovalent copper atom; *C is a carbene carbon; X1 and X2 are selected from alkyl, cycloalkyl, alkoxy, amino, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, heteroalkynyl, arylalkyl, aryloxy, aryl, heteroalkyl, heteroaryl, and combinations thereof; X1 and X2 are independently bonded to *C by an atom selected from C, N, O, S, and P; X1 and X2 are optionally joined to form a ring; and Y is selected halide, alkyl, cycloalkyl, alkoxy, amino, phosphine, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, heteroalkynyl, arylalkyl, aryloxy, aryl, heteroalkyl, heteroaryl, and combinations thereof. A formulation containing compound having a structure according to formula (I), and a device with an organic layer comprising disposed between an anode and a cathode, that includes a compound having a structure according to formula (I) are also described.

Abstract: A compound having a structure of Formula M(LA)x(LB)y(LC)z, where ligand LA is ligand LB is and ligand LC is is disclosed. In Formula M(LA)x(LB)y(LC)z, M is a metal having an atomic number greater than 40; x is 1, 2, or 3; y and z are 0, 1, or 2; x+y+z is the oxidation state of metal M; Z1-Z6 are each C or N; ZD is N or a carbene carbon; rings C and D are independently a 5 or 6-membered carbocyclic or heterocyclic ring; R4 is substituted, while each of R1, R2, R3, RC, RD, R11, R12, and R13 are selected from hydrogen and a variety of moieties; and any adjacent substituents of R1, R2, R3, R4, RC, RD, R11, R12, and R13 are optionally joined to form a ring. Formulations and devices, such as an OLEDs, that include the compound of formula M(LA)x(LB)y(LC)z are also described.