نتایج جستجو برای: type ii heterostructure

تعداد نتایج: 1799788  

Journal: :Advanced electronic materials 2021

Abstract Combining a transition metal dichalcogenide monolayer (ML) and molecular semiconductors is an attractive route for forming nanoscale hybrid van der Waals heterostructures with potentially novel (opto‐)electronic properties. The energy level alignment at the interface governs these properties, but precise determination of interfacial electronic structure challenging due to pronounced ex...

2011
C. Bean D. Lang

Selectively doped Gex Si , _ x lSi strained layer heterostructures have been grown in a single quantum well configuration on (OOl)-Si substrate using molecular beam epitaxy. The modulation doping effect has been observed inp-type structures only; although both nandp-type double heterostructures were grown. We have investigated the effects of: (i) alloy layer thickness (well width), (ii) doping ...

2015
Savas Delikanli Pedro L. Hernández-Martínez Mehmet Zafer Akgul Hilmi V. Demir

nanoribbons, [ 10 ] and most recently nanoplatelets (NPLs) [ 11 ] have been successfully synthesized. In these solution-processed quantum structures, an additional epitaxial growth of semiconductor shell around the starting semiconductor core leads to various architectures of nanocrystal heterostructures. By doing so, physical properties can be elegantly modifi ed with precisely controlling dis...

Hossein Rafiei , Milad Ashrafizadeh,

Background: Lead is one of the sustainable metals with devastating effects on many tissues. This study, examined the adverse effect of lead poisoning on the gene expression of collagen type II and osteocalcin by mesenchymal stem cells (MSCs) cultured in chondrogenic and osteogenic media, respectively. Methods: We used 18 male Wistar rats, divided in 3 groups. In addition to libitum feed as the...

2013
Sriram Venkatesan Morten H. Madsen Herbert Schmid Peter Krogstrup Erik Johnson Christina Scheu

In many life-testing and reliability studies, the experimenter might not always obtain complete information on failure times for all experimental units. One of the most common censoring schemes is progressive type-II censoring. The aim of this paper is characterizing the parent distributions based on Shannon entropy of progressive type-II censored order statistics. It is shown that the equality...

Journal: :genetics in the 3rd millennium 0
seyedeh sedigheh abedini maryam azad mandana hassanzad kimia kahrizi hossein najmabadi

spinal muscular atrophy (sma) is an autosomal recessive neuromuscular disorder caused by homozygous deletion of the survival motor neuron gene 1 (smn1) in more than 90% of patients. according to the age of onset and severity of the disease, sma is classified into three groups: type i (severe), type ii (intermediate) and type iii (mild). as reported, the smn2 gene, centromeric copy gene, showed ...

Journal: :caspian journal of internal medicine 0
ghollam reza moshtaghi kashanian dariush forohar mojgan sanjari

background: resistin and ghrelin are hormones that have roles in the glucose and lipid homeostasis and weight regulation. human studies regarding resistin and ghrelin in diabetic patients are scarce, especially in the cases of normotensive and non-obese patients. this study was designed to illuminate some of the missing points.methods: eighty diabetic patients and eighty healthy individuals par...

Journal: :Microelectronics Journal 2005
Igor A. Sukhoivanov O. V. Mashoshyna V. K. Kononenko D. V. Ushakov

Both radiative and nonradiative processes which occur in the active region of GaInAs–GaInAsP–InP asymmetric multiple quantum-well (AMQW) heterolasers with two quantum wells of different width (4 and 9 nm) are described. Several possible processes of non-radiative Auger recombination which affect the temperature sensitivity of the lasing threshold are analyzed and the temperature dependencies of...

Journal: :Advanced Functional Materials 2023

Electron–phonon interactions play an essential role in charge transport and transfer processes semiconductors. For most structures, tailoring electron–phonon for specific functionality remains elusive. Here, it is shown that, hybrid perovskites, coherent phonon modes can be used to manipulate transfer. In the 2D double perovskite, (AE2T)2AgBiI8 (AE2T: 5,5“-diylbis(amino-ethyl)-(2,2”-(2)thiophen...

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