Article
Engineering, Electrical & Electronic
Sudipta Kumar Sarkar, Dinabandhu Maji, Javed Alam Khan, Siddharth Kurup, Dipti Gupta
Summary: This study demonstrates the low-cost fabrication of high-k dielectric and semiconducting layers for flexible thin-film transistors using photonic curing. These devices exhibit high performance, low-voltage operation, and mechanical flexibility. Photonic curing is shown to be a viable method for the fabrication of solution-derived ZnO and ZrO2 layers.
ACS APPLIED ELECTRONIC MATERIALS
(2022)
Article
Materials Science, Composites
Tao Wang, Jialin Zhang, Jinhui Li, Xialei Lv, Liang Shan, Guoping Zhang, Rong Sun, Ching-Ping Wong
Summary: This article introduces a new material PSPI for electronic packaging, and designs a multifunctional aminoquinoline-functionalized fluorographene quantum dots nanofiller to meet new application requirements. The results show that the QL-FGQDs/PI nanocomposites cured at 200 degrees C have low dielectric constant and low dissipation factor, as well as excellent optical, mechanical and thermal properties.
COMPOSITES COMMUNICATIONS
(2023)
Article
Engineering, Electrical & Electronic
Lei Wang, Luchao Wu, Jun Wang
Summary: In this study, a lift-off technique was proposed to obtain freestanding test samples of low-k thin films. The mechanical properties of the low-k film were measured using uniaxial tensile tests, with an elastic modulus of ~2.5 GPa and tensile strength of about 18.3 MPa.
MICROELECTRONIC ENGINEERING
(2022)
Review
Chemistry, Applied
Yahui Li, Gaohui Sun, Yu Zhou, Guangmin Liu, Jun Wang, Shihui Han
Summary: This article reviews the recent research progresses in low-k PI film, including both intrinsic and porous low-k PI films. The dielectric loss (D-f) and the influencing factors are analyzed. The advantages and disadvantages of different routes to generate low-k PI film are summarized, and the dielectric properties, thermal stability, and mechanical properties are compared. This article aims to gain a deeper understanding about low-k PI film and provide a reference for its future development.
PROGRESS IN ORGANIC COATINGS
(2022)
Article
Materials Science, Multidisciplinary
Jiafei Yao, Xin Liu, Mingshun Sun, Tianci Xu, Man Li, Jing Chen, Maolin Zhang, Jun Zhang, Yufeng Guo
Summary: This paper investigates the double dielectrics enhancement LDMOS (DDE LDMOS) with high-k field dielectric and low-k buried dielectric. The analytical models of the potential and electric field, optimal breakdown voltage and drift doping concentration are established for this novel LDMOS. The validity of the analytical models is confirmed by the simulation results. Based on the analytical and simulated results, the modulation mechanism of the high-k field dielectric and low-k buried dielectric on the electric field and breakdown characteristics of DDE LDMOS are analyzed and compared. Compared to the conventional LDMOS, the specific on-resistance of DDE LDMOS is reduced by 19%, the breakdown voltage and figure of merit (FOM) of the DDE LDMOS can be improved by 62% and 222.4% when the permittivity of high-k field dielectric and low-k buried dielectric are 100 and 2. Meanwhile, the transfer characteristic, output characteristic, frequency characteristic, and switching characteristic of the DDE LDMOS are also discussed.
RESULTS IN PHYSICS
(2022)
Article
Chemistry, Physical
Jin Hu, Shufen Zhang, Bingtao Tang
Summary: 2D materials show great potential in dielectric and energy storage applications, with electrically conductive fillers enhancing dielectric constant and dielectric loss, while highly-insulating fillers improve breakdown strength and energy storage capacity of PNDs. Different filler and system designs can further enhance the properties of PNDs.
ENERGY STORAGE MATERIALS
(2021)
Article
Chemistry, Physical
Bihuan Peng, Li Yuan, Guozheng Liang, Aijuan Gu
Summary: Introducing self-healing ability and ultra-low dielectric loss to high dielectric constant polymer composites is crucial for high service reliability and sustainable development. The sLTNO@mAC/EP composites show significantly improved dielectric properties and self-healing efficiency compared to composites based on mAC or a blend of sLTNO and mAC, with the mechanism being mainly attributed to interface polarization.
APPLIED SURFACE SCIENCE
(2021)
Article
Engineering, Electrical & Electronic
Ankit Verma, Shipra Gupta, V. N. Mishra, Rajiv Prakash
Summary: This study focuses on the fabrication and characterization of a low-voltage, flexible organic thin film transistor (OTFT) for ammonia sensing. The device utilizes a hybrid dielectric layer and a polymer/2-D nanocomposite as the gate oxide and active layer respectively. The results show that the fabricated device has good electrical characteristics and can detect ammonia gas at low concentrations.
IEEE TRANSACTIONS ON ELECTRON DEVICES
(2023)
Article
Nanoscience & Nanotechnology
James Huang, Jing Mu, Yunil Cho, Charles Winter, Victor Wang, Zichen Zhang, Kesong Wang, Chanyoung Kim, Ajay Yadav, Keith Wong, Srinivas Nemani, Ellie Yieh, Andrew Kummel
Summary: Selective and smooth low-k SiOx/AlOx nanolaminate dielectric on dielectric (DOD) was achieved using a hybrid water-free pulsed CVD process. Aniline selective passivation was demonstrated on W surfaces. The deposition of a low-k dielectric on the nanoscale was confirmed by TEM analysis.
ACS APPLIED MATERIALS & INTERFACES
(2023)
Article
Materials Science, Composites
Weifei Wu, Xueqing Liu, Zhe Qiang, Jiying Yang, Yuhong Liu, Kai Huai, Bailang Zhang, Shuxiang Jin, Yumin Xia, Kun Kelvin Fu, Jianming Zhang, Yuwei Chen
Summary: This study presents a new strategy for balancing high dielectric permittivity and low dielectric loss by simultaneously assembling conductive and insulating particles into chainlike structures induced by electric field interactions. The addition of insulating barrier particles can significantly reduce the dielectric loss while maintaining a relatively high dielectric permittivity.
COMPOSITES SCIENCE AND TECHNOLOGY
(2021)
Article
Chemistry, Applied
Yangwen Mao, Haopeng Cai, Lihua Gao, Wanyu Huang, Xin Huang
Summary: Flame retardant epoxy resin (FREP) was prepared by incorporating a P/N flame retardant containing azole ring into epoxy resin (EP). The addition of BT significantly improved the flame retardancy of EP, as well as the mechanical and dielectric properties of FREP.
REACTIVE & FUNCTIONAL POLYMERS
(2023)
Article
Chemistry, Physical
Susmita Rabha, Apurba Das, Sunil Gone, Pamu Dobbidi
Summary: The structural, electrical, and dielectric properties of MgTiO3/Ba0.5Sr0.5TiO3 (BST) bi-layer structures grown through reactive RF magnetron sputtering have been studied. The BST/MTO bi-layer exhibited better crystallinity and lower roughness compared to the MTO/BST bi-layer. The dielectric response of the MTO/BST bi-layer showed an anomaly attributed to charge generation at the interfaces, while both bi-layers showed tunable dielectric responses.
APPLIED SURFACE SCIENCE
(2023)
Article
Chemistry, Multidisciplinary
Jun Peng, Weiwen Pu, Shengnan Lu, Xianzhong Yang, Congcong Wu, Nan Wu, Zhaoru Sun, Hung-Ta Wang
Summary: This study reports a high-crystallinity α-Sb2O3 nanoflakes with remarkably low dielectric constant (k) ranging from 2.0 to 2.5, attributed to the ultralow molecular density and significantly suppressed ionic polarization. Combined with excellent optical band gap, thermal stability, and breakdown strength, alpha-Sb2O3 is considered a promising low k dielectric material.
Article
Chemistry, Applied
Zian He, Junwen Xie, Ziwei Liao, Yingyi Ma, Mingyan Zhang, Wenlong Zhang, Hongyan Yue, Xin Gao
Summary: This study utilized POSS to prepare coatings with hierarchical porous structure, successfully reducing the dielectric constant and water uptake of polyimide films. The mechanical properties remained almost undamaged when optimizing the dielectric and water resistance properties, demonstrating stable dielectric properties in humid conditions.
PROGRESS IN ORGANIC COATINGS
(2021)
Article
Polymer Science
Viorica Musat, Elena Emanuela Herbei, Elena Maria Anghel, Michael P. M. Jank, Susanne Oertel, Daniel Timpu, Laurentiu Frangu
Summary: Bottom-up approaches allow for the preparation of low-temperature hybrid thin films suitable for printable transparent and flexible electronic devices. In this study, transparent PMMA/ZrO2 nanostructured-building blocks (nBBs) hybrid thin films were obtained using a modified sol-gel method. The thermal behaviors, chemical structure, and morphology of the films were analyzed, and excellent dielectric behavior was observed.
Article
Materials Science, Multidisciplinary
Travis D. Frazer, Joshua L. Knobloch, Jorge N. Hernandez-Charpak, Kathleen M. Hoogeboom-Pot, Damiano Nardi, Sadegh Yazdi, Weilun Chao, Erik H. Anderson, Marie K. Tripp, Sean W. King, Henry C. Kapteyn, Margaret M. Murnane, Begona Abad
PHYSICAL REVIEW MATERIALS
(2020)
Article
Physics, Applied
Claudia Cancellieri, Ethan A. Scott, Jeffrey Braun, Sean W. King, Ron Oviedo, Christopher Jezewski, John Richards, Fabio La Mattina, Lars P. H. Jeurgens, Patrick E. Hopkins
JOURNAL OF APPLIED PHYSICS
(2020)
Article
Physics, Applied
Ethan A. Scott, Jeffrey L. Braun, Khalid Hattar, Joshua D. Sugar, John T. Gaskins, Mark Goorsky, Sean W. King, Patrick E. Hopkins
Summary: This study focuses on the thermal conductivity of amorphous carbon created in diamond via nitrogen ion implantation. Various measurement techniques are used to investigate its thermal properties, revealing a thermal conductivity of approximately 1.4Wm -1 K -1, comparable to that of amorphous carbon films fabricated through other methods.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Chemistry, Multidisciplinary
Ethan A. Scott, Sean W. King, Nanette N. Jarenwattananon, William A. Lanford, Han Li, James Rhodes, Patrick E. Hopkins
Summary: The thermal conductivity of amorphous solids can be increased through ion irradiation, altering the bonding network configuration. Films with higher initial hydrogen content show the greatest enhancement, accompanied by stiffening and densification from the irradiation process. This enhancement in vibrational transport is unique compared to the structural degradation and reduced thermal conductivity typically seen in ion conductivities of crystalline materials.
Article
Materials Science, Multidisciplinary
Jeffrey L. Braun, Sean W. King, Eric R. Hoglund, Mehrdad Abbasi Gharacheh, Ethan A. Scott, Ashutosh Giri, John A. Tomko, John T. Gaskins, Ahmad Al-kukhun, Gyanendra Bhattarai, Michelle M. Paquette, Georges Chollon, Benjamin Willey, G. Andrew Antonelli, David W. Gidley, Jinwoo Hwang, James M. Howe, Patrick E. Hopkins
Summary: This study thoroughly investigated the thermal conductivity of hydrogenated amorphous silicon nitride (a-SiNx:H) and found that hydrogen incorporation disrupts bonding among silicon and nitrogen atoms, leading to significant variations in heat transfer. Chemical, vibrational, and structural analysis revealed that changes in hydrogen content directly impact the thermal conductivity by affecting average atomic distances.
PHYSICAL REVIEW MATERIALS
(2021)
Article
Physics, Applied
Elias B. Frantz, David J. Michalak, Nicholas J. Harmon, Eric M. Henry, Stephen J. Moxim, Michael E. Flatte, Sean W. King, James S. Clarke, Patrick M. Lenahan
Summary: The study investigates the effects of silicon isotopic abundance on EDMR and NZFMR effects observed on unpassivated Si/SiO2 metal-insulator-semiconductor capacitors. The results show a significant narrowing of the NZFMR response upon removal of Si-29 nuclei, with superhyperfine interactions playing a crucial role in determining the response breadth. It is strongly suggested that leakage currents involve tunneling from Si/SiO2 P-b dangling bonds to defects within the oxide, indicating a dominant role of Si/SiO2 interface trap defects in the observed phenomena.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Physics, Applied
Elias B. Frantz, David J. Michalak, Nicholas J. Harmon, Eric M. Henry, Michael E. Flatte, Sean W. King, James S. Clarke, Patrick M. Lenahan
Summary: The study provides insights into the tunneling phenomenon in Si/SiO2, showing that the trap-assisted tunneling spectra are dominated by silicon dangling bonds at the Si/SiO2 interface. The presence of Si-29 nuclei and hydrogen greatly affects the NZFMR response, indicating the importance of interface trap defects in the tunneling process.
APPLIED PHYSICS LETTERS
(2021)
Article
Physics, Applied
Elias B. Frantz, Nicholas J. Harmon, David J. Michalak, Eric M. Henry, Michael E. Flatte, Sean W. King, James S. Clarke, Patrick M. Lenahan
Summary: This study investigates the low-frequency EDMR and NZFMR responses observed on unpassivated Si-28/(SiO2)-Si-28 MIS capacitors, demonstrating the connection between the spin-mixing mechanism and NZFMR response. By fitting the spectra, a dipolar coupling constant can be extracted, suggesting magnetic dipolar interactions between P-b centers at the interface are responsible for the NZFMR response in the absence of electron-nuclear hyperfine interactions.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Materials Science, Multidisciplinary
Sandip Thakur, Connor Jaymes Dionne, Pravin Karna, Sean W. King, William Lanford, Han Li, Shouvik Banerjee, Devin Merrill, Patrick E. Hopkins, Ashutosh Giri
Summary: This study investigates the effects of mass density and atomic coordination on the thermal conductivity and vibrational characteristics of amorphous silicon carbide systems. The results reveal the significant role of atomic coordination in dictating the contributions from propagating and nonpropagating modes.
PHYSICAL REVIEW MATERIALS
(2022)
Article
Nanoscience & Nanotechnology
Gheorghe Stan, Cristian V. Ciobanu, Sean W. King
Summary: Atomic force microscopy (AFM) is a widely used tool for surface characterization, capable of quantitatively determining the depth and mechanical properties of thin films. It offers nondestructive and robust techniques for probing layer thickness, subsurface features, and elastic properties in various fields such as semiconductor electronics, additive manufacturing, and biomaterials.
ACS APPLIED MATERIALS & INTERFACES
(2022)
Article
Chemistry, Physical
Vamseedhara Vemuri, Sean W. King, William A. Lanford, John T. Gaskins, Patrick Edward Hopkins, Jeremy Van Derslice, Han Li, Nicholas C. Strandwitz
Summary: Thermal processing of MLD alucone films can produce porous and low-k materials. The chemical evolution of the films during heating was studied using various spectroscopy techniques. The lowest dielectric constant of the processed alucone films was lower than that of ALD alumina films.
CHEMISTRY OF MATERIALS
(2023)
Article
Chemistry, Physical
Rupak Thapa, Lauren M. Dorsett, Raja Sekhar Bale, Suhaib Malik, Stefan C. Wagner, Derrick Bailey, Jacob Stoehr, Anthony N. Caruso, Jeffery D. Bielefeld, Sean W. King, Michelle M. Paquette
Summary: Carborane (C2B10H12) molecules are unique precursors for self-assembled monolayer (SAM) applications. These 3D, icosahedral (12-vertex) molecules allow for well-ordered layers formation with fewer defects compared to traditional linear alkyl SAMs. Post-growth treatments like heat and plasma can be used to crosslink and stabilize the films. These carborane thiol SAMs show stability to thermal and plasma treatment, with some changes in boron coverage and oxidation. The films can be further stabilized and modified by plasma treatment and may have various applications in functional and protective layers.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Review
Engineering, Electrical & Electronic
Gheorghe Stan, Sean W. King
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2020)
Article
Engineering, Electrical & Electronic
Michelle M. Paquette, Anthony N. Caruso, Justin Brockman, Jeff Bielefeld, Markus Kuhn, Sean W. King
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2020)
Article
Engineering, Electrical & Electronic
Donghyi Koh, Sanjay K. Banerjee, Chris Locke, Stephen E. Saddow, Justin Brockman, Markus Kuhn, Sean W. King
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B
(2019)