Home
Resources
Publications
Compositional engineering of VOPcPhO-TiO 2 nano-composite to reduce the absolute threshold value of humidity sensors

Compositional engineering of VOPcPhO-TiO 2 nano-composite to reduce the absolute threshold value of humidity sensors

Mohamad Izzat Azmer, Fakhra Aziz, Zubair Ahmad, Ehsan Raza, Mansoor Ani Najeeb, Noshin Fatima, Tahani M Bawazeer, Mohammad S Alsoufi, R A Shakoor, Khaulah Sulaiman

Talanta. 2017 Nov 1;174:279-284.

PMID: 28738579

Abstract:

This research work demonstrates compositional engineering of an organic-inorganic hybrid nano-composites for modifying absolute threshold of humidity sensors. Vanadyl-2,9,16,23-tetraphenoxy-29H,31H-phthalocyanine (VOPcPhO), an organic semiconductor, doped with Titanium-dioxide nanoparticles (TiO2 NPs) has been employed to fabricate humidity sensors. The morphology of the VOPcPhO:TiO2 nano-composite films has been analyzed by atomic force microscopy (AFM) and field emission scanning electron microscopy (FESEM). The sensors have been examined over a wide range of relative humidity i.e. 20-99% RH. The sensor with TiO2 (90nm) shows reduced sensitivity-threshold and improved linearity. The VOPcPhO:TiO2 (90nm) nano-composite film is comprised of uniformly distributed voids which makes the surface more favorable for adsorption of moisture content from environment. The VOPcPhO:TiO2 nano-composite based sensor demonstrates remarkable improvement in the sensing parameter when equated with VOPcPhO sensors.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP109738218	Vanadyl 2,9,16,23-tetraphenoxy-29H,31H-phthalocyanine		109738-21-8	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: