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使用双（异丁基二硫代磷酸根）铅（II）配合物作为单源前驱体通过原子层化学气相沉积技术制备纳米结构硫化铅沉积物及其阻抗研究。

Nanostructured Lead Sulphide Depositions by AACVD Technique Using Bis(Isobutyldithiophosphinato)Lead(II) Complex as Single Source Precursor and Its Impedance Study.

作者信息

Iram Sadia, Mahmood Azhar, Sitara Effat, Batool Bukhari Syeda Aqsa, Fatima Syeda Arooj, Shaheen Rubina, Azad Malik Mohammad

机构信息

School of Natural Sciences, National University of Sciences and Technology, Islamabad 44000, Pakistan.

Department of Materials, University of Manchester, Manchester M13 9PL, UK.

出版信息

Nanomaterials (Basel). 2020 Jul 23;10(8):1438. doi: 10.3390/nano10081438.

DOI:10.3390/nano10081438
PMID:32717992
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC7466212/
Abstract

This communication reports the synthesis of bis(diisobutyldithiophosphinato)lead(II) complex and its subsequent application as a single source precursor for the nanostructured deposition of lead sulphide semiconductors and its impedance to explore its scope in the field of electronics. Synthesized complex was characterized by microelemental analysis, nuclear magnetic resonance spectroscopy, infrared spectroscopy and thermogravimetric analysis. This complex was decomposed using the aerosol-assisted chemical vapour deposition technique at different temperatures to grow PbS nanostructures on glass substrates. These nanostructures were analyzed by XRD, SEM, TEM and EDX methods. Impedance spectroscopic measurements were performed for PbS in the frequency range of 40 to 6 MHz at room temperature. In a complex impedance plane plot, two relaxation processes were exhibited due to grains and grain boundaries contribution. A high value of dielectric constant was observed at low frequencies, which was explained on the basis of Koops phenomenological model and Maxwell-Wagner type polarization. Frequency-dependent AC conductivity results were compliant with Jonscher power law, while capacitance-voltage loop had a butterfly shape. These impedance spectroscopic results have corroborated the ferroelectric nature of the resultant PbS nanodeposition.

摘要

本通讯报道了双（二异丁基二硫代磷酸根）铅（II）配合物的合成及其作为硫化铅半导体纳米结构沉积的单一源前驱体的后续应用，并探讨了其在电子领域的应用范围及其阻抗。通过微量元素分析、核磁共振光谱、红外光谱和热重分析对合成的配合物进行了表征。使用气溶胶辅助化学气相沉积技术在不同温度下分解该配合物，以在玻璃基板上生长硫化铅纳米结构。通过XRD、SEM、TEM和EDX方法对这些纳米结构进行了分析。在室温下，对硫化铅在40至6 MHz频率范围内进行了阻抗光谱测量。在复阻抗平面图中，由于晶粒和晶界的贡献，呈现出两个弛豫过程。在低频下观察到高介电常数，这是根据库普斯唯象模型和麦克斯韦-瓦格纳型极化来解释的。频率相关的交流电导率结果符合琼舍尔幂律，而电容-电压环路呈蝴蝶形状。这些阻抗光谱结果证实了所得硫化铅纳米沉积物的铁电性质。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/ed7f4afb44b0/nanomaterials-10-01438-g011.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/f5a34c7189fd/nanomaterials-10-01438-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/b0e50d08b229/nanomaterials-10-01438-g006.jpg
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https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/889fa75c8dab/nanomaterials-10-01438-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/2be2916642e7/nanomaterials-10-01438-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/3e22bacc5239/nanomaterials-10-01438-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/ed7f4afb44b0/nanomaterials-10-01438-g011.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/34d7f63960aa/nanomaterials-10-01438-g001.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/edcf36f13804/nanomaterials-10-01438-g002.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/4787207f592a/nanomaterials-10-01438-g003.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/e3208e757a62/nanomaterials-10-01438-g004.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/f5a34c7189fd/nanomaterials-10-01438-g005.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/b0e50d08b229/nanomaterials-10-01438-g006.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/9fcb7961ef27/nanomaterials-10-01438-g007.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/889fa75c8dab/nanomaterials-10-01438-g008.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/2be2916642e7/nanomaterials-10-01438-g009.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/3e22bacc5239/nanomaterials-10-01438-g010.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f7b2/7466212/ed7f4afb44b0/nanomaterials-10-01438-g011.jpg

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