公开(公告)号：US20210181144A1

公开(公告)日：2021-06-17

申请号：US16976483

申请日：2018-03-01

申请人： PRINTED ELECTRONICS TECHNOLOGIES LIMITED LIABILITY COMPANY ("PRINTELTECH" LLC)

发明人： Alexey Sergeevich SIZOV ,  Daniil Sergeevich ANISIMOV ,  Askold Albertovich TRUL ,  Victoriya Petrovna CHEKUSOVA ,  Aleksandr Anatolevich PERMYAKOV ,  Aleksey Nikolaevich KISILEV ,  Aleksey Andreevich VASILEV ,  Elena Valerievna AGINA ,  Sergey Anatolevich PONOMARENKO

IPC分类号： G01N27/414 ,  H01L27/28 ,  H01L51/05 ,  H01L51/00 ,  G01N33/00

摘要： The invention relates to the field of measuring equipment, and more particularly, to gas analysis sensors/chemical sensors designed to analyze the composition of gas mixtures and to detect and quantify toxic chemical gaseous compounds in an environment. The gas multisensor includes an array of N organic field-effect transistors, each of which consist of at least a source electrode and a drain electrode separated by an organic semiconductor layer, a gate electrode, a dielectric layer, and an additional receptor layer based on a metalloporphyrin of general formula 1 or 2 and completely or partially covering the organic semiconductor layer, while a metal ion M of metalloporphyrin is a transition metal, and each of the N organic field-effect transistors contained in the array differs from the other organic field- effect transistors in the array by the chemical structure of the receptor layer. The technical result is lowering the limit of detection of an electronic nose device based on chemosensors.

公开(公告)号：US20210164933A1

公开(公告)日：2021-06-03

申请号：US16954555

申请日：2018-12-11

申请人： Printeltech LLC

发明人： Alexey Sergeevich SIZOV ,  Daniil Sergeevich ANISIMOV ,  Askold Albertovich TRUL ,  Victoriya Petrovna CHEKUSOVA ,  Aleksandr Anatolevich PERMYAKOV ,  Mikhail Yurevich YABLOKOV ,  Aleksey Andreevich VASILEV ,  Elena Valerievna AGINA ,  Sergey Anatolevich PONOMARENKO

IPC分类号： G01N27/414

摘要： Use: detecting the presence of small concentrations of target gases. A method for selectively determining the concentration of gaseous mercaptan-containing and/or amino-containing compounds using a gas sensor based on an organic field-effect transistor is characterized in that the magnitude of a current in the channel of an organic field-effect transistor is measured in a time-dependent manner; the magnitude of a threshold opening voltage of the organic field-effect transistor and the magnitude of the charge carrier mobility are calculated in a time-dependent manner on the basis of the data regarding the time-dependent magnitude of the current in the channel of the organic field-effect transistor; the magnitude of the relative change in charge carrier mobility and the magnitude of the shift in the threshold opening voltage of the organic field-effect transistor are calculated; a detectable mercaptan-containing and/or amino-containing compound is determined according to the value of the magnitudes of the relative change in charge carrier mobility and of the shift in the threshold opening voltage of the organic field-effect transistor; the concentration of the detectable mercaptan-containing compound is determined according to the magnitude of the relative change in charge carrier mobility, and/or the concentration of the detectable amino-containing compound is determined according to the shift in the threshold opening voltage of the organic field-effect transistor. Technical result: creation of a device for the independent selective measurement of small concentrations (from 10 ppb to 1 ppm) of mercaptan-containing and/or amino-containing compounds in atmospheric air or in gas mixtures.