CH3NH3PbI3 crystal growth, structure and composition
Journal of Physics: Conference Series. 2018. Vol. 1124. No. 4. P. 041008.
V. E. Anikeeva, Semenova O. I., Tereshchenko O. E.
For the past five years methyl-ammonium lead trihalide perovskite solar cells have shown remarkable progress in power conversion efficiencies due to their unique properties. Single CH3NH3PbI3 crystals were grown on the base of concentrated aqueous solution condensation of the precursor. The grown crystal structure and stoichiometry were studied by RHEED, X-ray and XPS. The perovskite crystal photocurrent spectra were measured in the temperature range of 85-330 K.
Research target: Chemical Technologies Materials Technologies Physics
Priority areas: engineering science
Supercritical fluids - theory and applications. Introduction to a special issue of the Journal of Molecular Liquids dedicated to Prof. Yu. E. Gorbaty
, , , Journal of Molecular Liquids 2017 Vol. 239 P. 1-2
Professor Yuri E. Gorbatywas born 30 July 1932 in the city Grozny, in the Soviet Union. He has graduated from the Mendeleev Institute of Chemical Technology,Moscow, in 1955. He has got his Candidate of Sciences (Ph.D.) degree in 1963 for his work on “Non-equilibrium crystallization of the three-componentmelts”, and later in 1988 he was awarded ...
Added: July 13, 2017
Distribution function of random strains in an elastically anisotropic continuum and defect strengths of Tm3+ impurity ions in crystals with zircon structure
, , et al., Physical Review B: Condensed Matter and Materials Physics 2017 Vol. 96 No. 1 P. 014116-1-014116-13
We construct a distribution function of the strain-tensor components induced by point defects in an elastically anisotropic continuum, which can be used to account quantitatively for many effects observed in different branches of condensed matter physics. Parameters of the derived six-dimensional generalized Lorentz distribution are expressed through the integrals computed over the array of strains. ...
Added: February 8, 2019
, , et al., Физика и техника полупроводников 2020 Т. 54 № 6 С. 570-574
A model is developed that makes it possible to analytically determine the threshold current of a microdisk laser with consideration for its self-heating as a function of the ambient temperature and the microlaser diameter. It is shown that there exists a minimum microdisk diameter determined by self-heating, up to which continuous-wave lasing can be reached ...
Added: September 15, 2020
Competitive Adsorption of H2O and CO2 in 2-Dimensional Nano-Confinement: GCMD Simulations of Cs- and Ca-Hectorite
, , et al., Journal of Physical Chemistry C 2018 Vol. 122 No. 41 P. 23460-23469
The intercalation of H2O, CO2, and other fluid species in expandable clay minerals (smectites) may play a significant role in controlling the behavior of these species in geological C-sequestration and enhanced petroleum production and has been the subject of intensive study in recent years. This paper reports the results of a computational study of the ...
Added: October 20, 2018
XV Российская конференция (с международным участием) по теплофизическим свойствам веществ (РКТС-15), 15–19 октября 2018, Москва. Сборник тезисов
Российская конференция по теплофизическим свойствам веществ (РКТС) является одним из основных теплофизических форумов, проводимых в мире, в число которых входят: Европейская конференция по теплофизическим свойствам; Азиатская конференция по теплофизическим свойствам и Симпозиум по теплофизическим свойствам, проводимый в США. ...
Added: October 31, 2019
Долгопрудный : МФТИ, 2021
Труды 63-й Всероссийской научной конференции МФТИ. Включены результаты оригинальных исследований студентов, аспирантов, преподавателей и научных сотрудников МФТИ и дружественных учебных и научных организаций. Статьи представляют интерес для специалистов, работающих в области радиотехники и компьютерных технологий ...
Added: October 29, 2021
, М. : ЛЕНАНД, 2020
Within the presented monograph for the first time statistical approaches, based on the self-consistent field theory, were presented for the theoretical description of the thermodynamic properties of the ion-molecular systems (electrolyte solutions, ionic liquids, dielectric polymers and metal-organic frameworks) in the bulk solution and at the interfaces with the account for their molecular structure. In ...
Added: November 18, 2019
, , et al., Journal of Alloys and Compounds 2021 Vol. 859 Article 157782
MgPd2 is an intermetallic compound with a reversible hydrogen uptake near ambient conditions. Hydrogenation occurs near room temperature at pressures below 0.1 MPa to form a hydrogen-rich MgPd2H0.88 phase. In this work, hydrogen sorption isotherms were measured at 283 K ≤ T ≤ 328 K as well as at a cryogenic temperature of 77 K and pressure values up ...
Added: November 5, 2020
, Современные наукоемкие технологии. Региональное приложение 2017 № 1 С. 77-85
In article it is considered engineering confectioning of materials for sewing products. The factors, influencing stability of a design of host of sewing product, interaction of indicators of properties of components of a package of materials are investigated. Also are experimentally investigated confection and technological ways of strengthening of a design of host; problem zones ...
Added: November 15, 2020
Information Innovative Technologies: Materials of the International scientific – рractical conference
M. : Association of graduates and employees of AFEA named after prof. Zhukovsky, 2018
The materials of The International Scientific – Practical Conference is presented below. The Conference reflects the modern state of innovation in education, science, industry and social-economic sphere, from the standpoint of introducing new information technologies. It is interesting for a wide range of researchers, teachers, graduate students and professionals in the field of innovation and information technologies. ...
Added: May 24, 2018
, , et al., The Journal of Physical Chemistry Letters 2020 No. 11 P. 3821-3827
NaCl is one of the simplest compounds and was thought to be well-understood, and yet, unexpected complexities related to it were uncovered at high pressure and in low-dimensional states. Here, exotic hexagonal NaCl thin films on the (110) diamond surface were crystallized in the experiment following a theoretical prediction based on ab initio evolutionary algorithm USPEX. State-of-the-art ...
Added: May 8, 2020
, , et al., Materials Today 2020 Vol. 33 P. 36-44
Here we report targeted high-pressure synthesis of two novel high-TC hydride superconductors, P63/mmc-ThH9 and Fm3m-ThH10, with the experimental critical temperatures (TC) of 146 K and 159–161 K and upper critical magnetic fields 38 and 45 Tesla at pressures 170–175 Gigapascals, respectively. Superconductivity was evidenced by the observation of zero resistance and a decrease of TC under external magnetic field ...
Added: November 26, 2019
, , et al., Physica Status Solidi (A) Applications and Materials 2017 Vol. 214 No. 11 P. 1700198-1-1700198-8
The effect of isotopic modification of diamond lattice on photoluminescence (PL) and optical absorption spectra of ensembles of SiV− centers was studied. Thin epitaxial diamond layers were grown by a microwave plasma CH4/H2 mixtures using methane enriched to 99.96% for either 12C or 13C isotopes, while the Si doping was performed by adding a small percentage of silane SiH4 into ...
Added: February 8, 2019
, , et al., Journal of the American Ceramic Society 2019 Vol. 102 No. 5 P. 2745-2751
Single crystal of TlCl was doped with NIR photoluminescent univalent bismuth cations by prolonged immersion in liquid bismuth metal. The ion exchange Tl+ + Bi0 ↔ Tl0 + Bi+ at the crystal surface with subsequent Bi+ migration to the bulk are expected to drive the doping process. Contrary with Bi‐doped TlCl crystals, grown by Bridgman method, the ion exchange does ...
Added: February 8, 2019
, , et al., Inorganic Materials: Applied Research 2021 Vol. 12 No. 2 P. 328-336
New chalcospinels of the most common compositions were predicted: AIBIIICIVX4 (X = S or Se) and AIIBIIICIIIS4 (A, B, and C are various chemical elements). They are promising for the search for new materials for magneto-optical memory elements, sensors, and anodes in sodium-ion batteries. The parameter “a” values of their crystal lattice are estimated. When predicting, only the ...
Added: April 2, 2021
, , et al., Journal of Luminescence 2020 Vol. 219 P. 116895
Single crystals of Pr3+ doped hexa-aluminate Sr0.7La0.3Mg0.3Al12O19 (ASL) were prepared for spectroscopic characterization. We investigated their optical spectroscopic properties in σ and π polarization of light. Absorption spectra were recorded in extended spectral range, 400 nm–5400 nm. Energies of Pr3+ crystal field states were determined. In addition to the major D3h sites, minor sites were found. Judd-Ofelt analysis was performed: the ...
Added: October 22, 2020
Push-pull molecules bearing a hydrazonocyclopentadiene acceptor moiety: from the synthesis to organic photovoltaic applications
, , et al., Mendeleev Communications 2019 Vol. 29 No. 3 P. 304-306
First representatives of a novel class of compounds containing an electron-accepting hydrazonocyclopentadiene moiety, π-conjugated phenylene spacer, and electron-donating triphenylamine moiety have been synthesized. Investigation of their optical, electrochemical and photovoltaic properties revealed a high potential of the hydrazonocyclopentadiene acceptor moiety in the design of donor-acceptor compounds for organic photovoltaics. ...
Added: October 14, 2020
, , et al., Physical Chemistry Chemical Physics 2017 Vol. 19 No. 30 P. 19916-19921
Organometal triiodide perovskites are promising, high-performance absorbers in solar cells. Considering the perovskite as a thin film absorber, we solve transport equations and analyse the efficiency of a simple heterojunction configuration as a function of electron–hole diffusion lengths. We found that for a thin film thickness of ~1 micron the maximum efficiency of ~31% could ...
Added: September 29, 2017
, , et al., Scripta Materialia 2021 Vol. 194
We have studied the solid state dewetting of ten monolayer sthick Ag film deposited on periodicall ypatterned Si(557) surface. The annealing of the system in the ultra-high vacuum at the temperatures between 300 and 400°C resulted in full agglomeration of the film and formation of faceted single crystalline Ag nanoparticles exhibiting bimodal size distribution.We demonstrated ...
Added: December 10, 2020
Труды XXIX Международной конференции «Радиационная физика твердого тела» (Севастополь, 08 июля – 13 июля 2019г.)
ФГБНУ "НИИ ПМТ", 2019
Труды содержат представленные на конференцию доклады из вузовских, академических и отраслевых организаций России и стран СНГ (Армении, Азербайджана, Белоруссии, Казахстана, Узбекистана). В опубликованных докладах содержатся новые результаты исследований процессов образования, миграции и эволюции радиационных дефектов в твердых телах, радиационно-технологических методов модифицирования и обработки материалов с целью улучшения их эксплуатационных свойств, эффектов радиационно-стимулированной диффузии, радиационно-индуцированной сегрегации ...
Added: August 16, 2019
, Российский химико- техногогический университет им. Менделеева, 2012
В книге представлена информация по важнейшим эксплуатационным свойствам стекол, технологии их производства, перерабготки в изделия, методам разбраковки и контроля качкства. Авторы книги являются ведущими специалистами важнейших направлений науки о стекле, промышленной технологии производства материалов и изделий из стекла. ...
Added: October 2, 2022
, , et al., Journal of Luminescence 2018 Vol. 193 P. 119-124
We report on the quantum yield (eta) and decay time (tau) measurements at room temperature for the bright red-orange (602 nm) luminescence from new germanium-vacancy (Ge-V) centers in nano- and microcrystalline diamonds synthesized at high pressure and high temperature. The values eta = 3 +/- 1% and tau = 6.2 +/- 0.2 ns were found. ...
Added: February 8, 2019
, , et al., Inorganic Materials 2020 Vol. 56 No. 8 P. 828-835
We have studied and optimized conditions for spontaneous flux growth of TbCr3(BO3)4 crystals. Phase relations in the pseudoternary system TbCr3(BO3)4–K2Mo3O10–B2O3 have been studied in the temperature range 900–1130°C and the single-phase terbium chromium borate crystallization field has been mapped out. It has been shown that increasing the TbCr3(BO3)4 content of the starting high-temperature solution leads to a rhombohedral-to-monoclinic phase ...
Added: October 22, 2020
, Вестник технологического университета 2017 Т. 20 № 19 С. 70-74
The article considers the engineering packaging materials for garments, experimentally investigated technological ways of strengthening of the construction site; presented recommendations for improving unit of garments on the stage of choosing materials. ...
Added: November 15, 2020