An electrically conductive dinuclear aluminium complex for the fabrication of a Schottky diode

IF 3.9 3区 化学 Q2 CHEMISTRY, MULTIDISCIPLINARY
RSC Advances Pub Date : 2025-01-22 DOI:10.1039/D4RA07123A
Md. Akhtarul Alam, Anamika Hoque, Md Sanaul Islam, Nargis Khatun, Manash Pratim Sarmah, A. K. M. Maidul Islam, Manabendra Sarma, Goutam Kumar Kole and Ennio Zangrando
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Abstract

Electrical performances of a biphenyl-derived amido Schiff base ligand L and its dinuclear Al(III) complex (complex 1) were investigated in a metal–semiconductor (MS) junction. Electrical studies revealed that complex 1 significantly enhanced the electrical conductivity and improved the characteristics of a Schottky barrier diode (SBD). The IV characteristics demonstrated that complexation of ligand L with Al(III) ion increased the conductivity by two orders of magnitude (conductivity of L = 1.04 × 10−7 Sm−1 and complex 1 = 1.04 × 10−5 Sm−1) with improved diode rectification ratio. Complex 1 extended itself to the 3D supramolecular array by virtue of the hydrogen bond, C–H⋯π(C) bond and π⋯π interactions. This significantly influenced the semiconducting behaviour of complex 1 and essentially improved the characteristics of SBD. The optical band gap of complex 1 and ligand L in the solid state was determined experimentally (2.63 eV and 3.04 eV, respectively) and compared with the theoretical value obtained from DFT calculations. Furthermore, DOS analysis explained the conductivity behavior of complex 1 in a logically better way.

Abstract Image

一种用于制造肖特基二极管的导电双核铝复合物
研究了一种联苯衍生的氨基席夫碱配体L及其双核Al(III)配合物(配合物1)在金属-半导体(MS)结中的电学性能。电学研究表明,配合物1显著提高了肖特基势垒二极管(SBD)的导电性和特性。I-V特性表明,配体L与Al(III)离子络合后,电导率提高了两个数量级(L的电导率为1.04 × 10−7 Sm−1,配合物1的电导率为1.04 × 10−5 Sm−1),二极管整流比提高。配合物1通过氢键、C - h⋯π(C)键和π⋯π相互作用将自身扩展到三维超分子阵列。这显著影响了配合物1的半导体行为,并从根本上改善了SBD的特性。实验确定了配合物1和配体L在固体状态下的光学带隙(分别为2.63 eV和3.04 eV),并与DFT计算得到的理论值进行了比较。此外,DOS分析在逻辑上更好地解释了复合物1的电导率行为。
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来源期刊
RSC Advances
RSC Advances chemical sciences-
CiteScore
7.50
自引率
2.60%
发文量
3116
审稿时长
1.6 months
期刊介绍: An international, peer-reviewed journal covering all of the chemical sciences, including multidisciplinary and emerging areas. RSC Advances is a gold open access journal allowing researchers free access to research articles, and offering an affordable open access publishing option for authors around the world.
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