Chapter 3. Materials and Film Preparation - diss.fu
... crystal structure in comparison to the β one [LeL89]. Phthalocyanines containing large metal atoms (like Pt or Pb) can deviate from the α and β forms. As determined in the pioneering work of Robertson in 1936, for the β form of most phthalocyanines the monoclinic structure with two molecules per uni ...
... crystal structure in comparison to the β one [LeL89]. Phthalocyanines containing large metal atoms (like Pt or Pb) can deviate from the α and β forms. As determined in the pioneering work of Robertson in 1936, for the β form of most phthalocyanines the monoclinic structure with two molecules per uni ...
pdf - arXiv.org
... Recent studies have been focused on various wide-band gap materials with superior chemical and thermal stability needed for optoelectronics and applications [1-5]. Bulk hexagonal boron nitride (hBN) is one of these materials and offers excellent thermal conductivity and bright luminescence in the de ...
... Recent studies have been focused on various wide-band gap materials with superior chemical and thermal stability needed for optoelectronics and applications [1-5]. Bulk hexagonal boron nitride (hBN) is one of these materials and offers excellent thermal conductivity and bright luminescence in the de ...
3-nitroaniline and 3-nitrophenol – A novel non linear optical material
... traced to the fact that LDA calculations usually underestimate the energy gaps. A very simple way to overcome this drawback is to use the scissor correction, which merely makes the calculated energy gap equal to the experimental gap.The principal results of the calculations are presented in the Tabl ...
... traced to the fact that LDA calculations usually underestimate the energy gaps. A very simple way to overcome this drawback is to use the scissor correction, which merely makes the calculated energy gap equal to the experimental gap.The principal results of the calculations are presented in the Tabl ...
a = b = c
... Step 1 : Identify the intercepts on the x- , y- and z- axes. Step 2 : Specify the intercepts in fractional co-ordinates Step 3 : Take the reciprocals of the fractional intercepts (i) in some instances the Miller indices are best multiplied or divided through by a common number in order to simplify t ...
... Step 1 : Identify the intercepts on the x- , y- and z- axes. Step 2 : Specify the intercepts in fractional co-ordinates Step 3 : Take the reciprocals of the fractional intercepts (i) in some instances the Miller indices are best multiplied or divided through by a common number in order to simplify t ...
Evidence for a large enrichment of interstitial oxygen atoms in the
... It is well known that impurities located in crystalline materials induce changes in many of their properties. For example, mechanical properties of several bcc metals suffer drastic modifications in the presence of hydrogen atoms in interstitial sites since they become brittle.1 The temperature of t ...
... It is well known that impurities located in crystalline materials induce changes in many of their properties. For example, mechanical properties of several bcc metals suffer drastic modifications in the presence of hydrogen atoms in interstitial sites since they become brittle.1 The temperature of t ...
Electronic Structure of Two Precursors for Nanofabrication:[(CH3
... interaction which leads to pronounced splitting of their ionization energies as was deduced from UPS. Titanium Complex (II). The photoelectron spectra of II comprise two groups of partially resolved bands corresponding to four ionizations each (Figure 2). The group at 7.2−8.1 eV can be assigned to i ...
... interaction which leads to pronounced splitting of their ionization energies as was deduced from UPS. Titanium Complex (II). The photoelectron spectra of II comprise two groups of partially resolved bands corresponding to four ionizations each (Figure 2). The group at 7.2−8.1 eV can be assigned to i ...
Crystallographic defects in diamond
Imperfections in the crystal lattice of diamond are common. Such crystallographic defects in diamond may be the result of lattice irregularities or extrinsic substitutional or interstitial impurities, introduced during or after the diamond growth. They affect the material properties of diamond and determine to which type a diamond is assigned; the most dramatic effects are on the diamond color and electrical conductivity, as explained by the band theory.The defects can be detected by different types of spectroscopy, including electron paramagnetic resonance (EPR), luminescence induced by light (photoluminescence, PL) or electron beam (cathodoluminescence, CL), and absorption of light in the infrared (IR), visible and UV parts of the spectrum. Absorption spectrum is used not only to identify the defects, but also to estimate their concentration; it can also distinguish natural from synthetic or enhanced diamonds.