Abstract:
Small molecule and polymer semiconductors and their preparation methods are provided. These compounds are of formula I-III, and can be used in high-mobility organic thin-film transistors and bulk heterojunction polymer solar cells.
Abstract:
The present invention is directed to the field of organic semiconductor material. The present invention relates to a donor-acceptor conjugated polymer containing 4-alkoxy thiophene (AOT) ring as a conjugated side chain, a composition including the same and a photovoltaic device containing the same.
Abstract:
An electron-donating unit of the Formula, a copolymer thereof and their preparation methods, as well as their uses in thin-film transistor or polymer solar cell. The electron-donating unit is an effective building block for constructing high-performance polymer semiconductors due to its solubilizing ability, centrosymmetric geometry, backbone planarity, compact packing, and appropriate electron donating ability versus the previously reported BTOR and DTP units.
Abstract:
A method for preparing a bifunctional electrocatalyst is provided, which comprises: adding a nickel source compound and a ferric iron source compound into a solvent of ethanol; adding a urea into the obtained solution to give a mixture; drying the mixture; grinding the dried mixture into homogeneous powders and then subjecting the homogeneous powders to a heating process under inert atmosphere. The bifunctional electrocatalyst could simultaneously promote HER and OER processes in alkaline solution.
Abstract:
A method for characterising an object is provided and comprises that: providing, via a support plane, coherent incident radiation at the object at each of a plurality of radiation configurations, detecting, at a detector, an intensity of radiation scattered by the object for each of the plurality of radiation configurations, and determining, via an iterative process, an object transmission function associated with the object in dependence on the detected intensity of radiation at the detector for each of the plurality of radiation configurations. The iterative process comprises estimating, for each of the plurality of radiation configurations, an entrance wave function indicative of the incident radiation at the object and an exit wave function indicative of radiation emitted from the object in dependence on the detected intensity at the detector, a support constraint at the support plane and a current estimate of the object transmission function, determining a ratio of a sum of intensities of the exit wave function for the plurality of radiation configurations to a sum of intensities of the entrance wave function for the plurality of radiation configurations, and updating the estimate of the object transmission function in dependence on the determined ratio and an amplitude constraint.
Abstract:
The synthesis and characterization of a platinum (II) terpyridine system tethered with a latent organic dye of rhodamine derivative as colorimetric and fluorescent sensory moiety has been reported to show selective Hg 2+ ion sensing behavior. The interplay of aggregation/de-aggregation behavior of the alkynylplatinum (II) terpyridine complex and the ring-opening process of rhodamine derivative has been investigated. The spectral change of aggregation NIR emission at 800 nm and rhodamine fluorescence at 585 nm provides a possible ratiometric luminescence measurement. Morphological studies from TEM and SEM images showing nanospherical structures confirmed the aggregation in the absence of Hg 2+ ion.
Abstract:
Polymeric semiconductors and their preparation methods, as well as their uses in organic thin-film transistors or polymer solar cells. The polymeric semiconductors provided by the present invention are of Formula (I). The polymeric semiconductors provided by the present invention can be used in high-mobility organic thin-film transistors and exhibit high power conversion efficiencies in both bulk heterojunction polymer solar cells and layer-by-layer polymer solar cells.
Abstract:
Scalable hydrothermal synthesis of VO 2 (M) nanowires with high aspect ratio is achieved via the reduction of V 2 O 5 by oxalic acid in a diluted H 2 SO 4 solution, and the maximum length of as-synthesized nanowires can reach 90μm. Doping of Sb changes the structural phase diagram of VO 2 lattice, accompanied with a large decline of its phase temperature to even subzero temperature, at the same time impurity VO 2 (A) is effectively eliminated. Interestingly, the phase transition temperature of the un-doped sample is also obviously lower than the theoretical value.
Abstract translation:具有高纵横比的VO 2(M)纳米线的可伸缩水热合成是通过将V 2 O 5(M) 在稀释的H 2 SO 4溶液中通过草酸处理,并且合成的纳米线的最大长度可以达到90μm。 Sb的掺杂改变了VO 2晶格的结构相图,伴随着相的温度大幅下降到甚至零下的温度,同时杂质VO 2(A )被有效消除。 有趣的是,未掺杂样品的相变温度也明显低于理论值。 p>
Abstract:
A method for preparing a flexible perovskite solar cell by blade coating, which comprises the following steps: preparing a hole transport layer, a perovskite layer and an electron transport layer on a flexible conductive substrate by a blade coating method. The method is simple in preparation process and has low requirements for the equipment, the advantages from using the blade coating method lie in that the costs can be saved to the greatest extent and the green production can be realized.
Abstract:
A compound having a formula (I) is provided, in which each of A and B is independently and respectively one of formula (II) and (III), given that at least one of A and B comprise an alkynyl, each of R 1 and R 2 is independently and respectively a C 1-20 alkyl, a thienyl or a phenyl, and each of the thienyl and the phenyl is optionally and independently substituted with a C 1-20 alkyl. An organic semiconductor polymer formed by an electron donor unit and an electron acceptor unit, a film formed by the organic semiconductor polymer, and a semiconductor device are also provided.