Vorrichtung und Konzentrationsmessvorrichtung damit sowie Konzentrationsmessverfahren damit

Details

Veröffentlichungs-Nr.

EP4749277

Anmeldetag

17. Juli 2024

Veröffentlichung

23. Januar 2025

Rechtsraum

EP

IPC

G01N27/414, G01N27/416

Abstract

A device that can be used in a concentration measurement apparatus and a concentration measurement method is provided, the device being capable of detecting a threshold voltage V<th> with high sensitivity and promptly measuring a concentration of a target to be detected in a sample liquid even if the sample liquid contains a minute amount of the target to be detected. The device includes an insulating substrate, at least one insulating composite layer, and a liquid storage portion capable of holding the sample liquid, the insulating composite layer includes a pair of electrodes, and a semiconductor layer in contact with the pair of electrodes, the liquid storage portion includes a reference electrode in contact with the sample liquid, the semiconductor layer includes an oxide including an indium (In) element, a zinc (Zn) element, and an additive element (X), the additive element (X) is at least one element selected from tantalum (Ta), strontium (Sr), and niobium (Nb), and a selective detection membrane having selectivity with respect to the target to be detected in the sample liquid is provided between the insulating composite layer and the liquid storage portion.

Anmelder

Firmen

Mitsui Kinzoku Company, Limited
Kyushu Institute of Technology

Land

🇯🇵 Japan

Fachgebiete