Humidity sensor based on squaraine polymer, preparation method and use thereof
US10302583B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 30, 2017 |
| Grant date | May 28, 2019 |
| Priority date | — |
| Expiry date | Feb 8, 2038 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2261/94
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The invention discloses a humidity sensor based on squaraine polymer and the preparation method and use thereof. Specifically, the humidity sensor disclosed by the invention comprises a coating material and an interdigital electrode, wherein the coating material is a squaraine polymer as shown in formula I, n is an integer of 40-50, the coating material is brushed on the interdigital electrode, and the thickness is 100-400 microns. The humidity sensor disclosed by the invention has the advantages that the preparation is convenient, and the operation is simple; the response time is short, and the response for humidity change is higher than that of common metallic oxides; the recovery time is short, and the device performance is stable; the humidity hysteresis of the device is high under high humidity environment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.