摘要:
A polymer waveguide for coupling with one or more light transmissible devices, a method of fabricating a polymer waveguide for coupling with one or more light transmissible devices, and a method of coupling a polymer waveguide with one or more light transmissible devices. The polymeric waveguide comprises a grating structure.
摘要:
A photovoltaic cell comprises first and second electrode layers, an organic photoactive layer between the first and second electrode layers, and a polymeric grating structure in the first electrode layer. The first and second electrode layers are configured to collect electrical charges from the photoactive layer and to allow light to transmit through the first electrode layer to reach the photoactive layer. The grating structure is configured to provide a grating periodicity of about 100 nm to about 500 nm and grating amplitude of about 100 nm to about 500 nm. A device comprising the photovoltaic cell is disclosed. A photovoltaic cell may be formed by printing a polymer on a substrate to form a grating structure, forming a first electrode layer on the polymeric grating structure and the substrate, forming an organic photoactive layer above the first electrode layer, and forming a second electrode layer above the photoactive layer.
摘要:
A polymer comprises a polymeric chain represented by formula (I) or (II). In formula (I), a, b, c, d, and n are integers, a from 0 to 3, b from 1 to 5, c from 1 to 3, d from 1 to 5, and n from 2 to 5000; R1 and R2 are side chains; R3 and R4 are each independently H or a side chain; and when a is 0, R3 and R4 are side chains. In formula (II), a, b, c, d, e, and n are integers, a from 1 to 3, b and c being independently 0 or 1, d and e being independently 1 or 2, and n from 2 to 5000; R1 and R2 are side chains except —COOalkyl; and X1, X2 and X3 are independently O, S, or Se. Semiconductors and devices comprising the polymer are also provided.
摘要:
There is presently provided organic compounds of formula I, n-type acceptor materials derived from such compounds and devices comprising such n-type acceptor materials. (An-DprAn I
摘要:
Water-soluble fluorescent particles are formed in a simple process. A mixture comprising a solvent, water, a fluorescent polymer dissolved in the solvent, and an amphiphilic molecule is provided. The fluorescent polymer comprises a hydrophobic segment. The amphiphilic molecule comprises hydrophilic and hydrophobic segments. The solvent is removed from the mixture to allow the fluorescent polymer and the amphiphilic molecule to entangle in the presence of water, thus forming the water-soluble fluorescent particles. In the formed particles, the hydrophilic segments of the amphiphilic molecule are entangled with one another, and the hydrophobic segments of the fluorescent polymer and amphiphilic molecule are entangled with one another. The amphiphilic molecule encapsulates the fluorescent polymer and at least some of the hydrophilic segments are exposed to render the particle soluble in water.
摘要:
There is provided novel n-type conjugated compounds based on 2-vinyl-4,5-dicyanoimidazole moieties conjugated via the vinyl group to an aromatic moiety. Also provided are thin films and photovoltaics comprising the novel compounds, as well as methods of synthesizing the compounds.
摘要:
Disclosed are compounds according to formula (I), wherein R′ and R″ are selected from the group consisting of R′=SiR1R2R3 and R″=H; R′=SiR1R2R3 and R″=SiR4R5R6; and R′=Ar1SiR1R2R3 and R″=Ar2SiR4R5R6; R1, R2, R3, R4, R5, and R6 are independently selected from the group consisting of hydrogen, alkyl, alkenyl, alkynyl, aryl, cycloalkyl, cycloalkenyl, cycloalkynyl, arylalkyl, arylalkenyl, and arylalkynyl; Ar1 and Ar2 are independently selected from the group consisting of arylene, arylenealkylene, arylenealkynylene, heteroarylene, heteroarylenealkylene, heteroarylenealkenylene and heteroarylenealkylene; and n is at least 20. Such compounds may be used as an emissive layer in a polymer light-emitting diode (PLED), which itself may be used in electroluminescent devices.
摘要翻译:公开了根据式(I)的化合物,其中R'和R“选自R'= SiR 1 R 2 R 3 和/或R“= H; R'= SiR 1 R 2 R 3 R 3和R“= SiR 4 R 5, R 6; 和R'= Ar 1 SiR 1 R 2 R 3 R 3和R“= Ar 2 SiR 4 R 5 R 5 R 6; R 1,R 2,R 3,R 4,R 5, R 6和R 6独立地选自氢,烷基,烯基,炔基,芳基,环烷基,环烯基,环炔基,芳基烷基,芳基烯基和芳基炔基; Ar 1和Ar 2独立地选自亚芳基,亚芳基亚烷基,亚芳基亚炔基,亚杂芳基,亚杂芳基亚烷基,杂亚芳基亚烯基和亚杂芳基亚烷基; 并且n为至少20.这种化合物可用作聚合物发光二极管(PLED)中的发射层,其本身可用于电致发光器件中。
摘要:
There is presently provided compounds of formula (I), which are useful as p-type semiconductor materials and in devices comprising such p-type semiconductor materials.
摘要:
There is provided conductive organic arylamine compounds. The compounds may be prepared as films and such films may be used as a hole transporting layer, an emissive layer or an electron transporting layer in organic light emitting devices.
摘要:
An organic compound represented by the following general formula (I) and characterized by the conjugation of thieno[3,2-b]thiophene, thiophene and phenylene units in the conjugated compound.