迈向基于钙钛矿的室温臭氧传感器优化：追求灵敏度、稳定性及机制理解的多维方法
Towards the optimization of a perovskite-based room temperature ozone sensor: A multifaceted approach in pursuit of sensitivity, stability, and understanding of mechanism
AI总结：
本研究通过优化钙钛矿材料的卤化物组成和Mn掺杂水平，提升室温臭氧传感器的灵敏度、稳定性和机制理解，推动气体传感器技术的发展。
摘要：
金属卤化物钙钛矿（MHPs）因其简单的制造工艺和独特的光电性质而受到广泛关注。它们对氧化或还原环境的可逆电或光学性质变化使其成为气体检测技术的有前景材料。尽管在基于钙钛矿的传感器研究中取得了进展，但钙钛矿-气体相互作用的机制，这对传感器性能至关重要，仍然不明确。本研究首次评估了MHPs的传感性能和长期稳定性，考虑了卤化物组成变化和Mn掺杂水平等因素。研究揭示了卤化物组成与传感行为之间的明显相关性，其中富含溴的传感器对O3气体呈p型响应，而基于氯的对应物则表现出n型传感行为。值得注意的是，Mn掺杂通过促进气体吸附过程显著提高了O3传感性能，这得到了原子模拟和实验证据的支持。对传感器的长期评估提供了关于演变传感行为的有价值见解，突显了动态不稳定性随时间的影响。总体而言，本研究为最佳的卤化物组合和Mn掺杂水平提供了见解，代表了在工程室温钙钛矿基气体传感器方面的重要进展，这些传感器不仅低成本、高性能，而且耐用，标志着传感器技术的新时代。
英文摘要：
Metal halide perovskites (MHPs) have attracted significant attention owing to their simple manufacturing process and unique optoelectronic properties. Their reversible electrical or optical properties changes in response to oxidizing or reducing environments make them prospective materials for gas detection technologies. Despite advancements in perovskite-based sensor research, the mechanisms behind perovskite-gas interactions, vital for sensor performance, are still unexclusive. This work presents the first evaluation of the sensing performance and long-term stability of MHPs, considering factors such as halide composition variation and Mn doping levels. The research reveals a clear correlation between halide composition and sensing behavior, with Br-rich sensors displaying a p-type response to O3 gas, while Cl-based counterparts exhibit an n-type sensing behavior. Notably, Mn-doping significantly enhances the O3 sensing performance by facilitating the gas adsorption process, as supported by both atomistic simulations and experimental evidence. Long-term evaluation of the sensors provides valuable insights into evolving sensing behaviors, highlighting the impact of dynamic instabilities over time. Overall, this research offers insights into optimal halide combination and Mn-doping levels, representing a significant step forward in engineering room temperature perovskite-based gas sensors that are not only low-cost and high-performing but also durable, marking a new era in sensor technology.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
