Optical fluorescent sensor based on perovskite QDs for nitric oxide gas detection.

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 perovskite quantum dots (PQDs) is coated on the surface of filter paper. The PQD sensing material can be excited with a UV LED of a central wavelength at 380 nm, and the optical sensor has been tested in regard to monitoring different NO concentrations from 0-1000 ppm.