| Literature DB >> 29192496 |
George Kakavelakis1,2, Emmanouil Gagaoudakis3,4, Konstantinos Petridis1,5, Valia Petromichelaki3,4, Vassilis Binas3,4,6, George Kiriakidis3,4,6, Emmanuel Kymakis1.
Abstract
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 lead mixed halide perovskite (CH3NH3PbI3-xClx) sensing element, was immediately decreased when exposed to an ozone (O3) environment and manage to recover its pristine electrical conductivity values within few seconds after the complete removal of ozone gas. The sensing measurements showed different response times at different gas concentrations, good repeatability, ultrahigh sensitivity and fast recovery time. To the best of our knowledge, this is the first time that a lead halide perovskite semiconductor material is demonstrating its sensing properties in an ozone environment. This work shows the potential of hybrid lead halide based perovskites as reliable sensing elements, serving the objectives of environmental control, with important socioeconomic impact.Entities:
Keywords: lead halide perovskites; room temperature operated; self-powered ozone sensing element; solution processed; ultrahigh sensitivity
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Year: 2017 PMID： 29192496 DOI： 10.1021/acssensors.7b00761
Source DB: PubMed Journal: ACS Sens ISSN： 2379-3694 Impact factor: 7.711