Semiconductor quantum materials and their applications in electronics and optoelectronics

Fu, Yuwei; Willander, Magnus

doi:10.1016/b978-012513745-4/50025-1

Cited by 3 publications

(2 citation statements)

References 227 publications

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“…GaussView 5.0 was used to visualize molecular orbitals with an isosurface value of 0.025 au. Absorptions were developed using GaussSum 3.0 [43,44] …”

Section: Resultsmentioning

confidence: 99%

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A Core Structure Candidate for Small Molecule Acceptors: Synthesis and DFT Study of Furan Substituted 1,2,4‐Triazole Derivatives

Ekti,

Akış,

Öner

2023

ChemistrySelect

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This study is based on the design, synthesis, and investigation of the physical and chemical properties of furan‐substituted new conjugated organic compounds containing 1,2,4‐triazole core unit. The structures of the synthesized compounds were elucidated by 1H NMR, 13C NMR, and HRMS spectroscopic techniques. The behavior of these compounds in different solvents under UV excitation was investigated. Experimental and computational results were evaluated by examining these behaviors with DFT method. The results show that M1−M6 compounds can be used as a new acceptor core structure for organic electronic devices. By doping these compounds with conjugated or chromophore groups, promising compounds with a low HOMO‐LUMO band gap in light technology can be designed and synthesized.

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“…GaussView 5.0 was used to visualize molecular orbitals with an isosurface value of 0.025 au. Absorptions were developed using GaussSum 3.0 [43,44] …”

Section: Resultsmentioning

confidence: 99%

“…Absorptions were developed using GaussSum 3.0. [43,44] The data obtained from the DFT calculations are given in detail in the computational findings section.…”

Section: Computational Studiesmentioning

confidence: 99%

A Core Structure Candidate for Small Molecule Acceptors: Synthesis and DFT Study of Furan Substituted 1,2,4‐Triazole Derivatives

Ekti,

Akış,

Öner

2023

ChemistrySelect

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A Flexible and Binderless Thienothiophene Single-Wall Carbon Nanotube-Based Hybrid Electrode: Design, Synthesis, and Supercapacitor Applications

Berdibekova,

Isci,

Ekti

et al. 2024

ACS Appl. Energy Mater.

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A robust cycle life and high energy and power density are essential for storing energy. In addition, flexible and self-supporting electrodes play a crucial role in supercapacitor applications. Herein, we present the use of a thienothiophene and single-walled carbon-nanotube-based hybrid material, TT-HB-SWCNT, as a highly efficient symmetrical supercapacitor having flexible and self-standing properties. It serves as a flexible free-standing electrode in a two-electrode system for both supercapacitor and energy storage purposes. The developed hybrid electrode demonstrates an appropriate energy density for its application in supercapacitors, exhibiting a C-rate capability that aligns with the operational range of symmetrical supercapacitors. Moreover, regarding the GCD curves of the first and last five cycles, it is evident that charge and discharge occur with high reversibility of 10,000 cycles. It displayed a high energy storage capacity of 57.44 F•g −1 at 4 A•g −1 current density and a maximum power density of 2000 W•kg −1 , demonstrating that TT-HB-SWCNT is a promising hybrid nanomaterial for high-performance energy storage applications.

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Effects of series and parallel resistances on the current-voltage characteristics of small-area air-bridge resonant tunneling diode

Hou

Wang

et al. 2008

Journal of Applied Physics

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We have studied experimentally and theoretically the effects of series and parallel resistances on the current-voltage (I-V) characteristics of the resonant tunneling diode (RTD) in the format of a small-area freestanding air bridge. It has been shown by standard quantum mechanical considerations that the I-V characteristics consists of a simple resonant current peak (without bistability) and the voltage at the current peak is quite low, whereas experiments show not only a much high current-peak voltage, but also the bistability. Furthermore, experimental peak-to-valley ratio is in general quite low. By analyzing material and device structures, it has been demonstrated that the series resistance in the RTD contacts shifts the peak in current to higher voltage, it also creates the experimentally observed bistability effect in the region of the tunneling resonance. The parallel resistance induces a leakage current and reduces the peak-to-valley ratio. We have further performed similar analyses to many RTD structures reported in the literature and the conclusions remain the same.

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Semiconductor quantum materials and their applications in electronics and optoelectronics

Cited by 3 publications

References 227 publications

A Core Structure Candidate for Small Molecule Acceptors: Synthesis and DFT Study of Furan Substituted 1,2,4‐Triazole Derivatives

A Core Structure Candidate for Small Molecule Acceptors: Synthesis and DFT Study of Furan Substituted 1,2,4‐Triazole Derivatives

A Flexible and Binderless Thienothiophene Single-Wall Carbon Nanotube-Based Hybrid Electrode: Design, Synthesis, and Supercapacitor Applications

Effects of series and parallel resistances on the current-voltage characteristics of small-area air-bridge resonant tunneling diode

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