Solution Processed CH3NH3PbI3–xClx Perovskite Based Self-Powered Ozone Sensing Element Operated at Room Temperature

• DOI: 10.1021/acssensors.7b00761
• Publication Date: 2017-12-01T11:58:51Z
• Authors: George Kakavelakis; Emmanouil Gagaoud...; Konstantinos Petr...; Valia Petromichelaki; Vassilis Binas; George Kiriakidis; Emmanuel Kymakis
• Keywords: Titanium; Electric Conductivity; Temperature; Reproducibility of Results; Oxides; 02 engineering and technology; Calcium Compounds; Sensitivity and Specificity; 7. Clean energy; Ozone; Lead; Semiconductors; Electric Impedance; 0210 nano-technology

Hybrid lead halide spin coated perovskite films have been successfully tested as portable, flexible, operated at room temperature, self-powered, and ultrasensitive ozone sensing elements. The electrical resistance of the hybrid mixed (CH3NH3PbI3-xClx) element, was immediately decreased when exposed to an (O3) environment manage recover its pristine conductivity values within few seconds after complete removal gas. measurements showed different response times gas concentrations, good repeatability, ultrahigh sensitivity fast recovery time. To best our knowledge, this is first time that a semiconductor material demonstrating properties in environment. This work shows potential based perovskites reliable elements, serving objectives environmental control, with important socioeconomic impact.