An Optoelectronic Sensor Configuration Using ZnO Thick Film for Detection of Methanol

Sensors & Transducers

Shobhna DIXIT¹  K. P. MISRA¹  Atul SRIVASTAVA¹  R. K. SHUKLA¹  Anchal SRIVASTAVA² 

[1] Department of Physics, University of Lucknow, Lucknow-226007, India;Department of Physics, University of Lucknow, Lucknow-226007, IndiaDepartment of Physics, University of Lucknow, Lucknow-226007, India;

关键词: Nanocrystalline;    Sensitivity;    Physisorption;    Chemisorption;   

DOI  :  

来源: DOAJ

【 摘 要 】

In the present paper sensitivity of a nanocrystalline ZnO thick film to methanol vapors is reported. The sensing mechanism is the modulation in the intensity of light reflected from glass film interface. Modulation occurs due to the change in refractive index of ZnO film upon adsorption of vapor molecules. The film has been characterized by XRD, SEM, and optical transmission studies. XRD pattern reveals polycrystalline structure of the film with grain size 33.5 nm.

【 授权许可】

Unknown