{"title":"Self-assembly monolayer impact on Schottky diode electrical properties","authors":"Adem Mutlu , Mustafa Can , Cem Tozlu","doi":"10.1016/j.physb.2024.416686","DOIUrl":null,"url":null,"abstract":"<div><div>This study examines the electrical and charge transport properties of p-Si/TiO<sub>2</sub>/self-assembly monolayer (SAM)/Al type Schottky diodes. The diodes were fabricated by applying the SAM molecule 4′-[(3-methylphenyl)(phenyl)amino]biphenyl-4-carboxylic acid (CT21) onto titanium dioxide (TiO<sub>2</sub>) synthesized via the sol-gel method. The key parameters, including the ideality factor (<em>n</em>), series resistance (<em>R</em><sub><em>s</em></sub>), and barrier height (<em>∅</em><sub><em>b</em></sub>), were used to assess the impact of CT21 on diode performance. Experimental results revealed that using CT21 at the TiO<sub>2</sub>/Al interface significantly enhances diode performance. The <em>n</em> decreased from 3.8 in the control diode to 1.9 with CT21. <em>R</em><sub><em>s</em></sub> was substantially reduced, and the <em>∅</em><sub><em>b</em></sub> increased. The rectification ratio improved from 1x10<sup>4</sup> in the control diode to 1.1x10<sup>5</sup> in the CT21-modified diode. These enhancements, due to the CT21 molecule's ability to reduce interface states (<em>N</em><sub><em>ss</em></sub>) and improve surface properties, underscore the potential of SAM coatings to open a new window in nanoelectronics with better performance and reliability.</div></div>","PeriodicalId":20116,"journal":{"name":"Physica B-condensed Matter","volume":"696 ","pages":"Article 416686"},"PeriodicalIF":2.8000,"publicationDate":"2024-11-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physica B-condensed Matter","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0921452624010275","RegionNum":3,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"PHYSICS, CONDENSED MATTER","Score":null,"Total":0}
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Abstract
This study examines the electrical and charge transport properties of p-Si/TiO2/self-assembly monolayer (SAM)/Al type Schottky diodes. The diodes were fabricated by applying the SAM molecule 4′-[(3-methylphenyl)(phenyl)amino]biphenyl-4-carboxylic acid (CT21) onto titanium dioxide (TiO2) synthesized via the sol-gel method. The key parameters, including the ideality factor (n), series resistance (Rs), and barrier height (∅b), were used to assess the impact of CT21 on diode performance. Experimental results revealed that using CT21 at the TiO2/Al interface significantly enhances diode performance. The n decreased from 3.8 in the control diode to 1.9 with CT21. Rs was substantially reduced, and the ∅b increased. The rectification ratio improved from 1x104 in the control diode to 1.1x105 in the CT21-modified diode. These enhancements, due to the CT21 molecule's ability to reduce interface states (Nss) and improve surface properties, underscore the potential of SAM coatings to open a new window in nanoelectronics with better performance and reliability.
期刊介绍：
Physica B: Condensed Matter comprises all condensed matter and material physics that involve theoretical, computational and experimental work.
Papers should contain further developments and a proper discussion on the physics of experimental or theoretical results in one of the following areas:
-Magnetism
-Materials physics
-Nanostructures and nanomaterials
-Optics and optical materials
-Quantum materials
-Semiconductors
-Strongly correlated systems
-Superconductivity
-Surfaces and interfaces
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