Recent Advances in Perovskite Nanomaterials for Sensing Applications

Perovskite-structured materials have been extensively studied for sensing applications on account of their good thermal stability and 3–4 eV bandgap. They have been utilized to detect traces of O 2 , NO, CO, NO 2 , CO 2 , H 2 O, CH 4 , H 2 and similar smaller gas molecules such as C 2 H 5 OH etc. In addition, other sensing applications are optical sensing, I-V fluctuations, strain sensors, electromechanical sensors, sensing of metal ions, etc. Perovskite-structured halides are reported for sensing of metal ions, toxic gases, Volatile Organic Compounds (VOCs), detection of fungicides, pesticides, explosives, cellular imaging, radiation detection and humidity and temperature sensing.