Abstract
In this paper, a new, to the best of our knowledge, optical fluorescent sensor for the sensing of nitric oxide (NO) gas is developed. The optical NO sensor based on C s P b B r 3 perovskite quantum dots (PQDs) is coated on the surface of filter paper. The C s P b B r 3 PQD sensing material can be excited with a UV LED of a central wavelength at 380nm, and the optical sensor has been tested in regard to monitoring different NO concentrations from 0-1000ppm. The sensitivity of the optical NO sensor is represented in terms of the ratio I N2/I 1000p p m N O , where I N2 and I 1000p p m N O represent the detected fluorescence intensities in pure nitrogen and 1000ppm NO environments, respectively. The experimental results show that the optical NO sensor has a sensitivity of 6. In addition, the response time was 26s when switching from pure nitrogen to 1000ppm NO and 117s when switching from 1000ppm NO to pure nitrogen. Finally, the optical sensor may open a new approach for the sensing of the NO concentration in the harsh reacting environmental applications.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call