Tambwe Kevin, Ross Natasha, Baker Priscilla, Bui Thanh-Tuân, Goubard Fabrice
SensorLab, Chemical Science Building, University of the Western Cape, Robert Sobukwe Drive, Bellville, Cape Town 7535, South Africa.
CY Cergy Paris Université, LPPI, F-95000 Cergy, France.
Materials (Basel). 2022 Jun 10;15(12):4146. doi: 10.3390/ma15124146.
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 O, NO, CO, HO, 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.
在过去十年中，钙钛矿基纳米材料在科学界声名鹊起，并已用于各种可行的应用。这些材料独特的结构特性，即良好的直接带隙、低缺陷密度、大吸收系数、高灵敏度、长电荷载流子寿命、良好的选择性、室温下可接受的稳定性以及良好的扩散长度，促使研究人员探索它们在光伏、发光器件、晶体管、传感器和其他领域的潜在应用。钙钛矿基器件在固体和液体介质中对多种化学和生物化合物都表现出非常出色的传感性能。当用于传感设备时，钙钛矿纳米材料在很大程度上能够检测氧气、一氧化氮、一氧化碳、水等较小的分子。这篇综述文章探讨了无铅卤化物钙钛矿材料在湿度传感方面的应用。将提供对传感性能全面理解所必需的潜在机制和电荷传输特性的完整描述。还概述了创建新型无铅钙钛矿纳米结构基传感器的注意事项和潜在建议。
