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The fabrication of micro- and nano-scale silicon electronic devices requires precision lithography and controlled processing to ensure that the electronic properties of the device are optimized. Importantly, the Si-SiO2 interface plays a…

We report on the interfacial electronic properties of HfO2 gate dielectrics both, with GaN towards normally-OFF recessed HEMT architectures and the AlGaN barrier for normally-ON AlGaN/GaN MISHEMTs for GaN device platforms on Si. A…

Silicon carbide (SiC) is an attractive semiconductor material for applications in power electronic devices. However, fabrication of a high-quality SiC/SiO${}_2$ interface has been a challenge. It is well-known that there is a great…

材料科学 · 物理学 2018-05-23 So Takamoto , Takahiro Yamasaki , Takahisa Ohno , Chioko Kaneta , Asuka Hatano , Satoshi Izumi

Muon spin rotation with low-energy muons (LE{\mu}SR) is a powerful nuclear method where electrical and magnetic properties of surface-near regions and thin films can be studied on a length scale of $\approx$\SI{200}{\nano\meter}. In this…

Silicon nanowires (Si NW) are ideal candidates for solution processable field effect transistors (FETs). The interface between the nanowire channel and the gate dielectric plays a crucial role in the FET performance, and it can be…

介观与纳米尺度物理 · 物理学 2015-08-03 K. Prabha Rajeev , C. Opoku , V. Stolojan , M. Constantinou , M. Shkunov

The case study of a 32-atoms Si nanocrystallite (NC) embedded in a SiO2 matrix, both crystalline and amorphous, or free-standing with different conditions of passivation and strain is analyzed through ab-initio approaches. The Si32/SiO2…

材料科学 · 物理学 2010-09-03 Roberto Guerra , Elena Degoli , Margherita Marsili , Olivia Pulci , Stefano Ossicini

We develop a robust and versatile platform to define nanostructures at oxide interfaces via patterned top gates. Using LaAlO$_3$/SrTiO$_3$ as a model system, we demonstrate controllable electrostatic confinement of electrons to nanoscale…

介观与纳米尺度物理 · 物理学 2015-04-10 Srijit Goswami , Emre Mulazimoglu , Lieven M. K. Vandersypen , Andrea D. Caviglia

The influence of nitrogen incorporation on the energy distribution of interface states in the (100)Si/HfO2 system and their passivation by hydrogen have been studied. The results are compared to those of nominally N-free samples. The…

材料科学 · 物理学 2014-06-26 Y. G. Fedorenko , L. Truong , V. V. Afanas'ev , A. Stesmans , Z. Zhang , S. A. Campbell

We present an electron spin resonance (ESR) approach to characterize shallow electron trapping in band-tail states at Si/SiO2 interfaces in metal-oxide-semiconductor (MOS) devices and demonstrate it on two MOS devices fabricated at…

Since the 1960's when Gordon Moore proposed that the transistor density in our electronic devices should double every two years while the cost is halved, the semiconductor industry has taken this statement to heart. Over the last few…

材料科学 · 物理学 2022-07-27 Aditya Muralidharan

The structural, electronic and optical properties of Si nanocrystals of different size and shape, passivated with hydrogens, OH groups, or embedded in a SiO2 matrix are studied. The comparison between the embedded and free, suspended…

材料科学 · 物理学 2010-09-01 Roberto Guerra , Elena Degoli , Stefano Ossicini

Low-dimensional materials such as layered semiconductors or carbon nanotubes (CNTs) have been attracting increasing attention in the last decades due to their inherent scaling properties, which become fundamental to sustain the scaling in…

介观与纳米尺度物理 · 物理学 2019-04-23 Marta Perucchini , Enrique G. Marin , Damiano Marian , Giuseppe Iannaccone , Gianluca Fiori

SiC is set to enable a new era in power electronics impacting a wide range of energy technologies, from electric vehicles to renewable energy. Its physical characteristics outperform silicon in many aspects, including band gap, breakdown…

Compared with silicon (Si) power devices, Silicon carbide (SiC) devices have the advantages of fast switching speed and low on-resistance. However, the effects of non-ideal characteristics of SiC MOSFETs and stray parameters (especially…

系统与控制 · 电气工程与系统科学 2023-11-14 Jialin Zheng , Zhengming Zhao , Han Xu , Weicheng Liu , Yangbin Zeng

Fully-processed SiC power metal-oxide-semiconductor field-effect transistors (MOSFETs) emit light during switching of the gate terminal, while both drain and source terminals are grounded. The emitted photons are caused by defect-assisted…

This study illustrates the nature of electronic transport and its transition from one mechanism to another between a metal electrode and MoS2 channel interface in a field effect transistor (FET) device. Interestingly, measurements of the…

材料科学 · 物理学 2015-05-19 Faisal Ahmed , Min Sup Choi , Xiaochi Liu , Won Jong Yoo

We determined the interface state density ($D_{\rm it}$) distributions in the vicinity of the conduction band edge in silicon carbide (SiC) metal-oxide-semiconductor (MOS) structures by reproducing the experimental current-voltage…

材料科学 · 物理学 2020-09-07 Koji Ito , Takuma Kobayashi , Tsunenobu Kimoto

Silicon Carbide (SiC) is a typical material for third-generation semiconductor. The thermal boundary resistance (TBR) of 4H-SiC/SiO2 interface, was investigated by both experimental measurements and theoretical calculations. The structure…

应用物理 · 物理学 2025-02-06 Shichen Deng , Chengdi Xiao , Jiale Yuan , Dengke Ma , Junhui Li , Nuo Yang , Hu He

We report electronic transport on n-type silicon Single Electron Transistors (SETs) fabricated in Complementary Metal Oxide Semiconductor (CMOS) technology. The n-MOSSETs are built within a pre-industrial Fully Depleted Silicon On Insulator…

Nanoscale control of the quasi-two-dimensional electron gas at the LaAlO3/SrTiO3 (LAO/STO) interface by a conductive probe tip has triggered the development of a number of electronic devices. While the spatial distribution of the…

介观与纳米尺度物理 · 物理学 2018-01-17 Zhanzhi Jiang , Xiaoyu Wu , Hyungwoo Lee , Jung-Woo Lee , Jianan Li , Guanglei Cheng , Chang-Beom Eom , Jeremy Levy , Keji Lai