Synergistic enhancement of electric heating and infrared radiation characteristics in La0.7Sr0.3Al0.5Mn0.5O3@Pt thin film enabling electro-thermal-optical conversion

IF 2.8 4区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Journal of Materials Science: Materials in Electronics Pub Date : 2024-08-30 DOI:10.1007/s10854-024-13418-2

Xiaoyun Sun, Haigang Hou, Dongliang Zhang, Liuxu Yu, Jian Yang, Guiwu Liu, Junlin Liu, Guanjun Qiao

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Abstract

Non dispersive infrared gas sensor represents the leading trend in gas sensor technology with the infrared light source serving as a critical component. The working principle of infrared light sources involves energy conversions of electricity to heat and thermal to light, which is independently carried out by the electric heating layer and the infrared radiation layer. The complex multi-film structure of infrared light sources leads to high heat transfer loss, long response time, and increased heat capacity. This study defines a coral-like porous thin film containing Pt nanoparticles loaded on La_0.7Sr_0.3Al_0.5Mn_0.5O₃ (La_0.7Sr_0.3Al_0.5Mn_0.5O₃@Pt), created from the concept of multi-functional materials. This thin film exhibits outstanding electric heating and infrared radiation properties. The co-doping of A-site and B-site of LaAlO₃ made the La_0.7Sr_0.3Al_0.5Mn_0.5O₃ thin film not only possessed certain oxygen vacancies and lattice distortion, but also formed a coral-like micro-porous structure. The loading of Pt nanoparticles possesses high electrical conductivity and localized surface plasmon resonance effect, further nanostructured the coral-like micro-porous structure of La_0.7Sr_0.3Al_0.5Mn_0.5O₃ thin film. Benefit from the synergistic effect of the co-doping of Sr²⁺ and Mn²⁺and loading of Pt nanoparticles, the resistance of the La_0.7Sr_0.3Al_0.5Mn_0.5O₃@Pt thin film was reduced by 9 orders of magnitude. Meanwhile, its electric heating performance was improved by a factor of 11.29 compared to the LaAlO₃ thin film. Moreover, the infrared absorptivity of La_0.7Sr_0.3Al_0.5Mn_0.5O₃@Pt thin film exhibited in the range of 2.5–25 μm was ~ 96.7%, which is 1.60 times higher than that of LaAlO₃ thin film, indicating a significant improvement in the infrared radiation performance.

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协同增强 La0.7Sr0.3Al0.5Mn0.5O3@Pt 薄膜的电热和红外辐射特性，实现电热光转换

非色散型红外气体传感器代表了气体传感器技术的发展趋势，而红外光源则是其中的关键部件。红外光源的工作原理是电转热和热转光的能量转换，由电热层和红外辐射层独立完成。红外光源复杂的多膜结构导致传热损耗大、响应时间长、热容量增大。本研究从多功能材料的概念出发，定义了一种在 La0.7Sr0.3Al0.5Mn0.5O3 上负载铂纳米颗粒的珊瑚状多孔薄膜（La0.7Sr0.3Al0.5Mn0.5O3@Pt）。这种薄膜具有出色的电热和红外辐射特性。LaAlO3 的 A 位和 B 位的共掺杂使 La0.7Sr0.3Al0.5Mn0.5O3 薄膜不仅具有一定的氧空位和晶格畸变，还形成了珊瑚状的微孔结构。铂纳米粒子的负载具有高导电性和局部表面等离子体共振效应，进一步纳米化了 La0.7Sr0.3Al0.5Mn0.5O3 薄膜的珊瑚状微孔结构。得益于 Sr2+ 和 Mn2+ 共掺杂以及铂纳米粒子负载的协同效应，La0.7Sr0.3Al0.5Mn0.5O3@Pt 薄膜的电阻降低了 9 个数量级。同时，与 LaAlO3 薄膜相比，其电热性能提高了 11.29 倍。此外，La0.7Sr0.3Al0.5Mn0.5O3@Pt 薄膜在 2.5-25 μm 范围内的红外吸收率为 ~ 96.7%，是 LaAlO3 薄膜的 1.60 倍，表明其红外辐射性能得到了显著改善。

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来源期刊

Journal of Materials Science: Materials in Electronics 工程技术-材料科学：综合

CiteScore

5.00

自引率

7.10%

发文量

1931

审稿时长

2 months

期刊介绍： The Journal of Materials Science: Materials in Electronics is an established refereed companion to the Journal of Materials Science. It publishes papers on materials and their applications in modern electronics, covering the ground between fundamental science, such as semiconductor physics, and work concerned specifically with applications. It explores the growth and preparation of new materials, as well as their processing, fabrication, bonding and encapsulation, together with the reliability, failure analysis, quality assurance and characterization related to the whole range of applications in electronics. The Journal presents papers in newly developing fields such as low dimensional structures and devices, optoelectronics including III-V compounds, glasses and linear/non-linear crystal materials and lasers, high Tc superconductors, conducting polymers, thick film materials and new contact technologies, as well as the established electronics device and circuit materials.