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Upstream product

• 3661-49-2 3-methoxy-N-(4-methoxyphenyl)benzenamine 
• 128055-74-3 2,2',7,7'-tetrabromo-9,9'-spirobifluorene 

Relevant academic research and scientific papers

Carbohydrate double-nitrogen heterocyclic carbene precursor salt and its preparation and use (by machine translation)

The present invention provides a carbohydrate double-nitrogen heterocyclic carbene precursor salt and its preparation and use, the structure shown in formula I: The invention through the cheap and easy to obtain, three-dimensional chemical rich monosaccharide as a chiral source of chiral catalyst, for two different synthesis method carbohydrate double-nitrogen heterocyclic carbene precursor salt, as a palladium-catalyzed Buchwald - Hartwig reaction catalyst, replacing the toxicity, extremely sensitive to water and oxygen phosphine, synthesis has the value of the practical application of the Spiro - OMeTAD and its derivatives, overcome the preparation Spiro - OMeTAD and its derivatives of complex steps, a plurality of product components, not easy purification, low yield and the like. (by machine translation)

Molecular engineering of the hole-transporting material spiro-OMeTAD: Via manipulation of alkyl groups

Aliphatic substituent effects on the HOMO energy levels and the ability to transport charge and form stable molecular glasses of systematically modified spiro-OMeTAD analogues were investigated. It was determined that the thermal properties, energy levels and hole mobility values are dependent on the number of alkyl substituents and their position in the investigated spirobifluorene-based hole transporting materials (HTMs). The charge mobility of HTM3 possessing a seemingly insignificant m-methyl group in the diphenylamino moieties is the highest with a value of 2.8 × 10-3cm2V-1s-1at 6.4 × 105V cm-1field strength. It was found that moving one methoxy group into the m-position in the diphenylamino fragment ensured a stable amorphous phase of HTM1. Moreover, the long-term stability of a solid state dye-sensitized solar cell (ssDSSC) device comprising HTM1 was significantly enhanced over a cell with spiro-OMeTAD, in lifetime tests. The findings described in this publication could be applicable to hybrid solar cell research as a number of well-performing architectures rely heavily upon doped spiro-OMeTAD as a HTM.

NEW SPIRO COMPOUNDS AND THEIR USE IN ORGANIC ELECTRONICS APPLICATIONS AND DEVICES

The present invention relates 9,9'-spirobifluorene compounds of general formula (I) wherein the variables R11, R12, R21, R22, R31, R32, R41 and R42 independently of each other have the meaning of aryl or hetaryl, with the proviso that not all of the radicals R11, R12, R21, R22, R31, R32, R41 and R42 are identical, to the use of compounds of general formula I in organic electronics applications, especially in organic field effect transistors, in organic photodetectors and organic solar cells, specifically in dye-sensitized solar cells and bulk heterojunction solar cells, and to an organic field effect transistor, a dye-sensitized solar cell and a bulk heterojunction solar cell comprising compounds of general formula I.

hole-transporting material for inorganic-organic hybrid perovskite solar cells

The present invention relates to a hole-transporting compound having a novel structure and, more specifically, to a hole-transporting compound for an inorganic/organic hybrid perovskite-based solar cell. In the present invention, the inorganic/organic hybrid perovskite-based solar cell including a hole-transporting body has very high generating efficiency.(AA) Hole transferring layer(BB) Inorganic/organic perovskite layer(CC) TiO_2 layer(DD) Transparent conductive film(FTO)COPYRIGHT KIPO 2016

O-methoxy substituents in spiro-OMeTAD for efficient inorganic-organic hybrid perovskite solar cells

Three spiro-OMeTAD derivatives have been synthesized and characterized by 1H/13C NMR spectroscopy and mass spectrometry. The optical and electronic properties of the derivatives were modified by changing the positions of the two methoxy substituents in each of the quadrants, as monitored by UV-vis spectroscopy and cyclic voltammetry measurements. The derivatives were employed as hole-transporting materials (HTMs), and their performances were compared for the fabrication of mesoporous TiO2/CH 3NH3PbI3/HTM/Au solar cells. Surprisingly, the cell performance was dependent on the positions of the OMe substituents. The derivative with o-OMe substituents showed highly improved performance by exhibiting a short-circuit current density of 21.2 mA/cm2, an open-circuit voltage of 1.02 V, and a fill factor of 77.6% under 1 sun illumination (100 mW/cm2), which resulted in an overall power conversion efficiency (PCE) of 16.7%, compared to ～15% for conventional p-OMe substituents. The PCE of 16.7% is the highest value reported to date for perovskite-based solar cells with spiro-OMeTAD.