Thin-layer GaInSbAsPBi/GaSb heterostructures obtained from liquid phase in a temperature-gradient field

2017 ◽  
Vol 62 (1) ◽  
pp. 139-143 ◽  
Author(s):  
D. L. Alfimova ◽  
L. S. Lunin ◽  
M. L. Lunina ◽  
A. S. Pashchenko ◽  
S. N. Chebotarev
Keyword(s):  
Liquid Phase ◽  
Temperature Gradient ◽  
Thin Layer ◽  
Gradient Field

scholarly journals Влияние висмута на свойства упругонапряженных гетероструктур AlGaInAsP<Bi>/InP

2019 ◽  
Vol 53 (8) ◽  
pp. 1110
Author(s):  
М.Л. Лунина ◽  
Л.С. Лунин ◽  
Д.Л. Алфимова ◽  
А.С. Пащенко ◽  
Э.М. Данилина ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Quantum Yield ◽  
Temperature Gradient ◽  
Indium Phosphide ◽  
Luminescence Properties ◽  
Gradient Field ◽  
Epitaxial Layers ◽  
Structural Perfection ◽  
External Quantum Yield

AbstractThe results of growing elastically stressed AlGaInAsP〈Bi〉 thin epitaxial layers from the liquid phase on indium phosphide substrates in a temperature-gradient field are discussed. The effect of bismuth on the structural perfection, the luminescence properties, and the external quantum yield of AlGaInAsP〈Bi〉/InP heterostructures is investigated.

scholarly journals Твердые растворы AlGaInSbAs, выращенные на подложках InAs методом зонной перекристаллизации градиентом температуры

2020 ◽  
Vol 54 (7) ◽  
pp. 648
Author(s):  
Л.С. Лунин ◽  
М.Л. Лунина ◽  
Д.Л. Алфимова ◽  
А.С. Пащенко ◽  
О.С. Пащенко ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Temperature Gradient ◽  
Spinodal Decomposition ◽  
Solid Solutions ◽  
Spectral Characteristics ◽  
Luminescent Properties ◽  
Gradient Field ◽  
Regular Solutions

Growth of AlGaInSbAs solid solutions on InAs substrates from liquid phase in a temperature gradient field is discussed. There are calculated parameters and studied luminescent properties and spectral characteristics of AlGaInSbAs solid solutions isoperiodic to InAs substrates. Within the model of regular solutions, an analysis of heterophased neutrality in Al–Ga–In–Sb–As system is carried out. Regions of hermodynamic stability to spinodal decomposition of AlGaInSbAs solid solutions and isoperiodicity intervals to InAs substrate are revealed.

Synthetic hydroxymethyl-porphyrins for protection of carboxy group

2007 ◽  
Vol 11 (06) ◽  
pp. 434-441 ◽  
Author(s):  
Hitoshi Tamiaki ◽  
Kouji Kumon ◽  
Reiko Shibata
Keyword(s):  
Liquid Phase ◽  
Carboxylic Acid ◽  
Thin Layer ◽  
Peptide Synthesis ◽  
Phenyl Group ◽  
Coupling Reagents ◽  
Protective Groups ◽  
Simple Filtration ◽  
Meso Position ◽  
Layer Chromatography

Hydroxymethyl-porphyrins were prepared by modifying tetraarylporphyrin possessing a p-(methoxycarbonyl)phenyl group at the meso-position and octaethylporphyrin. The synthetic alcohols reacted with carboxylic acids by the use of coupling reagents, to give the corresponding esters quantitatively. Due to the porphyrin dye moiety, the esterification was easily monitored on thin layer chromatography, and the resulting esters were highly soluble in most organic solvents and easily handled. The esters were readily cleaved by the action of an acid to give the original carboxylic acid and hydroxymethyl-porphyrin. Separation of the two species was performed by simple filtration: the carboxylic acid was soluble (filtrate) and the porphyrins were precipitates in methanol. These protective groups for carboxy groups were useful for peptide synthesis in the liquid phase.

Sign in / Sign up

Export Citation Format

Share Document