2D Hybrid Perovskite Sensors for Environmental and Healthcare Monitoring.
Karl Jonas RiisnaesMohammed AlshehriIoannis LeontisRosanna MastriaHoi Tung LamLuisa De MarcoAnnalisa CoriolanoMonica Felicia CraciunSaverio RussoPublished in: ACS applied materials & interfaces (2024)
Layered perovskites, a novel class of two-dimensional (2D) layered materials, exhibit versatile photophysical properties of great interest in photovoltaics and optoelectronics. However, their instability to environmental factors, particularly water, has limited their utility. In this study, we introduce an innovative solution to the problem by leveraging the unique properties of natural beeswax as a protective coating of 2D-fluorinated phenylethylammonium lead iodide perovskite. These photodetectors show outstanding figures of merit, such as a responsivity of >2200 A/W and a detectivity of 2.4 × 10 18 Jones. The hydrophobic nature of beeswax endows the 2D perovskite sensors with an unprecedented resilience to prolonged immersion in contaminated water, and it increases the lifespan of devices to a period longer than one year. At the same time, the biocompatibility of the beeswax and its self-cleaning properties make it possible to use the very same turbidity sensors for healthcare in photoplethysmography and monitor the human heartbeat with clear systolic and diastolic signatures. Beeswax-enabled multipurpose optoelectronics paves the way to sustainable electronics by ultimately reducing the need for multiple components.
Keyphrases
- healthcare
- solar cells
- room temperature
- low cost
- high efficiency
- left ventricular
- blood pressure
- endothelial cells
- heart failure
- heavy metals
- highly efficient
- heart rate
- ionic liquid
- climate change
- reduced graphene oxide
- induced pluripotent stem cells
- health information
- social media
- depressive symptoms
- human health
- affordable care act