Dimensional reduction in Cs2AgBiBr6 enables long-term stable Perovskite-based gas sensing DOI Creative Commons
Wen Ye, Hongzhen Lin, Menglong Li

и другие.

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Май 23, 2025

Halide perovskite gas sensors have a low detection limit at room temperature, surpassing the performance of traditional metal oxide chemiresistors. However, they are prone to structural decomposition and loss due lack coordination unsaturated surface ions sensitivity environmental factors such as water, oxygen, heat, light. To address this issue, we present general strategy: replacing cation Cs+ in inorganic Cs2AgBiBr6 with long-chain alkylamines. This modification synthesizes sensor materials that effectively block moisture exhibit excellent stability under real-working conditions. The chemiresistors show high CO gas, (BA)4AgBiBr8 detecting 20 ppb, maintaining after 270 days continuous exposure ambient air. exceptional is elucidated through density functional theory calculations combined sum frequency generation spectroscopy, marking significant breakthrough halide perovskite-based sensing by sensors.

Язык: Английский

Ultrahigh Selectivity H2S Gas Sensor Based CsPbBr3 Perovskites via Pb–S Bonding Interaction DOI
Kechen Zhou, Huimin Yang,

Zhenming Du

и другие.

ACS Sensors, Год журнала: 2025, Номер unknown

Опубликована: Янв. 13, 2025

High selectivity and sensitivity sensing of H2S gas play a decisive role in the early detection sulfide solid-state battery failure. Herein, we construct CsPbBr3 perovskite-based sensor that exhibits outstanding gas-sensing performance to at room temperature, including high selectivity, fast response/recovery speed (73.5/275.6 s), humidity insensitivity, long-term stability (6 weeks without degradation). The excellent for results from formation lead–sulfur (Pb–S) bonds exclusive other molecules upshifted Fermi level perovskite interface by density functional theory (DFT) calculations. in-situ experiments reveal interaction Pb–S bonding transformation on surface. simple synthesis method unique mechanism based semiconductors help build room-temperature metal halide (MHP)-based sensors with failure future.

Язык: Английский

Процитировано

1
Metal oxide semiconductor-based heterojunctions synthesized by wet-chemical strategies for efficient volatile organic compounds detection DOI
Kaichun Xu, Kaidi Wu, Jinyong Xu

и другие.

Coordination Chemistry Reviews, Год журнала: 2025, Номер 538, С. 216735 - 216735

Опубликована: Апрель 21, 2025

Язык: Английский

Процитировано

1
Exposed (111) Plane Engineered of Lead‐Free Perovskite Cs2SnCl6 Octahedra for DMC Sensing in LIB Electrolyte Leakage Detection DOI
Kechen Zhou,

Huiyu Su,

Liyan Chen

и другие.

Small, Год журнала: 2025, Номер unknown

Опубликована: Май 13, 2025

Abstract Dimethyl carbonate (DMC), as a major component of electrolytes, can be used marker for monitoring electrolyte leakage in lithium‐ion batteries (LIBs). Herein, lead‐free perovskite Cs 2 SnCl 6 octahedra with (111) plane the exposed surface are synthesized by simple antisolvent method and gas sensor based on these shows excellent adsorption performance DMC molecules. The response value 100 ppm is 7.05 response/recovery time 82 s/83 s, well almost no degradation during one‐month stability test. DFT calculations density states band structure reveal molecules surface. And it first proposed that conformations have significant influence energy. In situ infrared absorption spectrometry demonstrates decomposition process This mechanism provides crucial insights essence sensing, while offering guidance designing high‐performance sensing materials.

Язык: Английский

Процитировано

0
Dimensional reduction in Cs2AgBiBr6 enables long-term stable Perovskite-based gas sensing DOI Creative Commons
Wen Ye, Hongzhen Lin, Menglong Li

и другие.

Nature Communications, Год журнала: 2025, Номер 16(1)

Опубликована: Май 23, 2025

Halide perovskite gas sensors have a low detection limit at room temperature, surpassing the performance of traditional metal oxide chemiresistors. However, they are prone to structural decomposition and loss due lack coordination unsaturated surface ions sensitivity environmental factors such as water, oxygen, heat, light. To address this issue, we present general strategy: replacing cation Cs+ in inorganic Cs2AgBiBr6 with long-chain alkylamines. This modification synthesizes sensor materials that effectively block moisture exhibit excellent stability under real-working conditions. The chemiresistors show high CO gas, (BA)4AgBiBr8 detecting 20 ppb, maintaining after 270 days continuous exposure ambient air. exceptional is elucidated through density functional theory calculations combined sum frequency generation spectroscopy, marking significant breakthrough halide perovskite-based sensing by sensors.

Язык: Английский

Процитировано

0