Ambient Stable CsCu2I3 Flexible Gas Sensors for Reliable NO2 Detection at Room Temperature DOI
Seung Ju Kim,

Gi Baek Nam,

Yeong Jae Kim

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

The advancement of the Internet Things and artificial intelligence has increased demand for air quality monitoring to protect human health. Nitrogen dioxide (NO2), a hazardous pollutant, causes inflammatory responses, even at low concentrations, necessitating sensitive gas sensors. Although metal oxide semiconductor sensors are commonly used, their high-operating temperature reliance on additional heaters limit miniaturization increase power consumption. Here, lead-free, transparent, flexible CsCu2I3 halide perovskite sensor was developed, demonstrating high sensitivity (1509% 5 ppm) selectivity NO2 detection room with full recovery. exhibited stability in ambient high-humidity environments, which is not achievable traditional First-principles density functional theory calculations revealed mechanisms underlying its sensitivity. This study highlights potential perovskites low-power sensing temperature, addressing critical challenges commercially viable wearable applications.

Language: Английский

Ambient Stable CsCu2I3 Flexible Gas Sensors for Reliable NO2 Detection at Room Temperature DOI
Seung Ju Kim,

Gi Baek Nam,

Yeong Jae Kim

et al.

Nano Letters, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

The advancement of the Internet Things and artificial intelligence has increased demand for air quality monitoring to protect human health. Nitrogen dioxide (NO2), a hazardous pollutant, causes inflammatory responses, even at low concentrations, necessitating sensitive gas sensors. Although metal oxide semiconductor sensors are commonly used, their high-operating temperature reliance on additional heaters limit miniaturization increase power consumption. Here, lead-free, transparent, flexible CsCu2I3 halide perovskite sensor was developed, demonstrating high sensitivity (1509% 5 ppm) selectivity NO2 detection room with full recovery. exhibited stability in ambient high-humidity environments, which is not achievable traditional First-principles density functional theory calculations revealed mechanisms underlying its sensitivity. This study highlights potential perovskites low-power sensing temperature, addressing critical challenges commercially viable wearable applications.

Language: Английский

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