Optical and conduction mechanism study of lead-free CsMnCl3 perovskite

IF 3.4 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR
Moufida Krimi , Mehdi Akermi , Rym Hassani , Abdallah Ben Rhaiem
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引用次数: 0

Abstract

Perovskite research is increasingly focused on lead-free, all-inorganic single crystals due to their lower biological toxicity and greater material stability. While lead-based perovskites show promise, their environmental and health risks are concerning. Lead-free alternatives provide a safer, more sustainable option with enhanced durability for practical applications. Nevertheless, this paper presents a structural, optical, and conduction study of lead-free CsMnCl3 perovskite. The material was prepared using slow evaporation method, the obtained compound crystallizes in a hexagonal system with the space group R-3m. The absorption spectrum of CsMnCl3 is analyzed, and the band gap is estimated to be 4.56 eV. The electrical study is crucial for the identification of the allows us to classify CsMnCl3 as a semiconductor, with conductivity increasing with temperature, as expected. The temperature-dependent electrical conductivity (dc) reveals a transition from semiconductor to metallic behavior at 383 K and from metallic to semiconductor behavior at 403 K. The study of the conductivity in the semiconductor phase indicates that above 383 K, the conductivity of CsMnCl3 is governed by a single polaron hopping, and that below 403 K. In summary the comprehensive study of the structural, optical, and electrical properties of CsMnCl3 provides valuable insights into its semiconductor characteristics and charge transport mechanisms, highlighting its potential for sustainable and environmentally friendly applications.

Abstract Image

无铅 CsMnCl3 包晶的光学和传导机制研究
由于无铅全无机单晶体具有较低的生物毒性和较高的材料稳定性,因此其研究日益受到重视。虽然铅基过氧化物显示出前景,但其环境和健康风险令人担忧。无铅替代品为实际应用提供了一种更安全、更可持续的选择,并具有更强的耐久性。然而,本文介绍了无铅 CsMnCl3 包晶石的结构、光学和传导研究。该材料采用缓慢蒸发法制备,得到的化合物呈六方晶系,空间群为 R-3m。分析了 CsMnCl3 的吸收光谱,估计其带隙为 4.56 eV。电学研究对于确定 CsMnCl3 是否属于半导体至关重要,正如预期的那样,电导率随温度升高而增加。与温度相关的电导率(直流)显示,在 383 K 时,半导体行为过渡到金属行为,在 403 K 时,金属行为过渡到半导体行为。对半导体相电导率的研究表明,在 383 K 以上,CsMnCl3 的电导率受单极子跳变的支配,而在 403 K 以下则受单极子跳变的支配。
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来源期刊
Solid State Sciences
Solid State Sciences 化学-无机化学与核化学
CiteScore
6.60
自引率
2.90%
发文量
214
审稿时长
27 days
期刊介绍: Solid State Sciences is the journal for researchers from the broad solid state chemistry and physics community. It publishes key articles on all aspects of solid state synthesis, structure-property relationships, theory and functionalities, in relation with experiments. Key topics for stand-alone papers and special issues: -Novel ways of synthesis, inorganic functional materials, including porous and glassy materials, hybrid organic-inorganic compounds and nanomaterials -Physical properties, emphasizing but not limited to the electrical, magnetical and optical features -Materials related to information technology and energy and environmental sciences. The journal publishes feature articles from experts in the field upon invitation. Solid State Sciences - your gateway to energy-related materials.
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