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In the prospect of understanding the photoluminescence mechanisms of AlN films doped with erbium and targeting photonic applications we have synthesized non doped and Er-doped AlN films with different crystallized nanostructures by using…

Materials Science · Physics 2020-10-20 Valerie Brien , Manuel Dossot , Hervé Rinnert , Sajjad Hussain Sajjad , Bernard Humbert , P. Pigeat

Two-dimensional (2D) polyaniline sheet has been recently synthesized and showed that it is a semiconductor with indirect band gap. In this research, we examine electrical and mechanical properties of a fully hydrogenated 2D polyaniline…

Materials Science · Physics 2018-06-12 Meysam Bagheri Tagani

Two-dimensional (2D) metallic systems with intrinsically low lattice thermal conductivity are rare, yet they are of great interest for next-generation energy and electronic technologies. Here, we present a comprehensive first-principles…

Recently fabricated two dimensional (2D) phosphorene crystal structures have demonstrated great potential in applications of electronics. Mechanical strain was demonstrated to be able to significantly modify the electronic properties of…

Materials Science · Physics 2014-07-02 Qun Wei , Xihong Peng

Two-dimensional (2D) carbon nitride materials play an important role in energy-harvesting, energy-storage and environmental applications. Recently, a new carbon nitride, 2D polyaniline (C3N) was proposed [PNAS 113 (2016) 7414-7419]. Based…

Materials Science · Physics 2016-12-13 Linyang Li , Xiangru Kong , Ortwin Leenaerts , Xin Chen , Biplab Sanyal , François M. Peeters

Nanomechanical resonators with high quality factors (\Qm{}) enable mechanics-based quantum technologies, in particular quantum sensing and quantum transduction. High-\Qm{} nanomechanical resonators in the kHz to MHz frequency range can be…

We compute the electronic structure of two-dimensional (2D) materials decorated with self-assembled organic monolayers using density functional theory. We find that 2D materials are strongly impacted by near-field electrostatic effects…

Materials Science · Physics 2021-09-22 Qunfei Zhou , Bukuru Anaclet , Trevor Steiner , Michele Kotiuga , Pierre Darancet

The topological effects of phonons have been extensively studied in various materials, particularly in the wide-bandgap semiconductor GaN, which has the potential to improve heat dissipation in power electronics due to its intrinsic,…

Materials Science · Physics 2023-10-17 Daosheng Tang

The packing mechanisms between Janus-MoSSe and Aluminum-Nitride (AlN) sheets were systematically investigated by using Density Function Theory calculations. Results show that the stabilization (packing) energies vary from -35.5 up to -17.5…

Ab initio calculations within the density-functional theory formalism are performed to investigate the chemical functionalization of a graphene-like monolayer of silicon - silicene - with B, N, Al or P atoms. The structural, electronic,…

Materials Science · Physics 2014-09-05 Jozef Sivek , Hasan Şahin , Bart Partoens , François M. Peeters

We report the first investigation on continuous-wave Raman lasing in high-quality-factor aluminum nitride (AlN) microring resonators. Although wurtzite AlN is known to exhibit six Raman-active phonons, single-mode Raman lasing with low…

In this work we show, by means of a density functional theory formalism, that the simple physical contact between hydrogen terminated boron nitride surfaces gives rise to a metallic interface with free carries of opposite sign at each…

Among different topological and related phases of condensed matter, nodal semimetals occupy a special place - the electronic band topology in these materials is related to three-dimensional bulk, rather than to surface, states. A great…

Mesoscale and Nanoscale Physics · Physics 2021-04-28 A. V. Pronin , M. Dressel

Single-photon emitters (SPEs) within wide-bandgap materials represent an appealing platform for the development of single-photon sources operating at room temperatures. Group III- nitrides have previously been shown to host efficient SPEs…

Aluminum nanostructures have recently been at the focus of numerous studies due to their properties including oxidation stability and surface plasmon resonances covering the ultraviolet and visible spectral windows. In this article, we…

Strain engineering is a vital way to manipulate the electronic properties of two-dimensional (2D) materials. As a typical representative of transition metal mono-chalcogenides (TMMs), a honeycomb CuSe monolayer features with one-dimensional…

Materials Science · Physics 2022-11-08 Gefei Niu , Jianchen Lu , Jianqun Geng , Shicheng Li , Hui Zhang , Wei Xiong , Zilin Ruan , Yong Zhang , Boyu Fu , Lei Gao , Jinming Cai

We report on our investigation of the electrical properties of metal/Al2O3/GaN metal-insulator-semiconductor (MIS) capacitors. We determined the conduction band offset and interface charge density of the alumina/GaN interface by analyzing…

Mesoscale and Nanoscale Physics · Physics 2015-05-30 Michele Esposto , Sriram Krishnamoorthy , Digbijoy N. Nath , Sanyam Bajaj , Ting-Hsiang Hung , Siddharth Rajan

Resonant tunneling diodes are formed using AlN/GaN core-shell nanowire heterostructures grown by plasma assisted molecular beam epitaxy on n-Si(111) substrates. By using a coaxial geometry these devices take advantage of non-polar (m-plane)…

We have investigated the possibility of using aluminum functionalized silicene trilayers (ABC-Si$_4$Al$_2$) as an anode material for alkali metal ion batteries (AMIBs). First, we studied the thermodynamic stability of ABC-Si$_4$Al$_2$ using…

Materials Science · Physics 2022-12-23 Bruno Ipaves , João F. Justo , Lucy V. C. Assali

Existence of van der Waals gaps renders two-dimensional (2D) materials ideal passages of lithium for being used as anode materials. However, the requirement of good conductivity significantly limits the choice of 2D candidates. So far only…

Materials Science · Physics 2022-06-13 Zheng Shu , Xiangyue Cui , Bowen Wang , Hejin Yan , Yongqing Cai