Humidity Sensing Applications of Lead-Free Halide Perovskite Nanomaterials

Materials

Fabrice Goubard¹  Thanh-Tuân Bui¹  Priscilla Baker²  Kevin Tambwe²  Natasha Ross² 

[1] CY Cergy Paris Université, LPPI, F-95000 Cergy, France;SensorLab, Chemical Science Building, University of the Western Cape, Robert Sobukwe Drive, Bellville, Cape Town 7535, South Africa;

关键词: halide perovskite;    lead-free;    nanomaterials;    humidity sensors;    capacitive/resistive sensor;    fabrication technologies;   

DOI  :  10.3390/ma15124146

来源: DOAJ

【 摘 要 】

Over the past decade, perovskite-based nanomaterials have gained notoriety within the scientific community and have been used for a variety of viable applications. The unique structural properties of these materials, namely good direct bandgap, low density of defects, large absorption coefficient, high sensitivity, long charge carrier lifetime, good selectivity, acceptable stability at room temperature, and good diffusion length have prompted researchers to explore their potential applications in photovoltaics, light-emitting devices, transistors, sensors, and other areas. Perovskite-based devices have shown very excellent sensing performances to numerous chemical and biological compounds in both solid and liquid mediums. When used in sensing devices, Perovskite nanomaterials are for the most part able to detect O₂, NO₂, CO₂, H₂O, and other smaller molecules. This review article looks at the use of lead-free halide perovskite materials for humidity sensing. A complete description of the underlying mechanisms and charge transport characteristics that are necessary for a thorough comprehension of the sensing performance will be provided. An overview of considerations and potential recommendations for the creation of new lead-free perovskite nanostructure-based sensors is presented.

【 授权许可】

Unknown