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Каталог книг и брошюр библиотеки ИФ СО РАН
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Общее количество найденных документов : 103
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1.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Chen Y., Liu F., Zhang Z., Hong J., Molokeev M. S., Bobrikov I. A., Shi J., Zhou J., Wu M.
Заглавие : A novel Mn4+-activated fluoride red phosphor Cs30(Nb2O2F9)9(OH)3·H2O:Mn4+ with good waterproof stability for WLEDs
Место публикации : J. Mater. Chem. C. - 2022. - Vol. 10, Is. 18. - P.7049-7057. - ISSN 20507534 (ISSN), DOI 10.1039/d2tc00132b
Примечания : Cited References: 56. - This work was financially supported by grants from the National Natural Science Foundation of China (NSFC) (No. 51802359), the Joint Funds of NSFC and Yunnan Province (No. U1702254), and Guangdong Basic and Applied Basic Research Foundation (No. 2020A1515010556)
Аннотация: Red-light-emitting materials, as pivotal components of warm white light-emitting diodes (WLEDs), have drawn increasing public focus. Among these, Mn4+-doped red light-emitting fluorides have drawn considerable attention when combined with an InGaN chip; however, they suffer from poor water stability under humid conditions. In this work, a novel fluoride red phosphor, Cs30(Nb2O2F9)9(OH)3·H2O:xMn4+ (CNOFM), with good water resistance was synthesized for the first time using a facile co-precipitation method at ambient temperature. Experiments were implemented for the precise analysis of its crystal structure, optical properties, micro-morphology, thermal behavior, and waterproof properties. 6.66% Mn4+-doped CNOFM maintained a stable crystal structure and possessed strong PL intensity located at 633 nm with high color purity of 96%. CNOFM showed better thermal and waterproof stability compared with the commercial K2SiF6:Mn4+ red phosphor. Without any surface modifications, the PL intensity remained at about 83% of the initial value after immersion in water for 60 min, and the mechanism was investigated. Finally, a warm WLED with a CRI of 92.3 and CCT of 3271 K was fabricated using the CNOFM red phosphor.
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2.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : EDELMAN I. S., GALANOV E. K., KOKOV I. T., MALAKHOVSKII A. V., ANISTRATOV A. T.
Заглавие : ABSORPTION-SPECTRA AND FARADAY-EFFECT IN CS2NANDCL6 AND CS2NAPRCL CRYSTALS
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1985. - Vol. 27, Is. 11. - P3467-3470. - ISSN 0367-3294
Примечания : Cited References: 8
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3.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aleksandrov K. S., Melnikova S. V., Kokov I. T.
Заглавие : Phase-transitions in CS2CDI4 from measurements of birefringence and dielectric-properties
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1987. - Vol. 29, Is. 8. - P.2487-2490. - ISSN 0367-3294
Примечания : Cited References: 8
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4.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aleksandrov K. S., Melnikova S. V., Misyul S. V.
Заглавие : Successive phase-transitions in ferroelastic cs2rbdyf6 with elpasolite-type structure
Место публикации : Phys. Status Solidi A. - 1987. - Vol. 104, Is. 2. - P.545-548. - ISSN 0031-8965, DOI 10.1002/pssa.2211040205
Примечания : Cited References: 6
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5.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Aleksandrova I. P., Sukhovsky A. A., Aleksandrov K. S.
Заглавие : Novel incommensurate phase in Cs3Bi2I9
Место публикации : Solid State Commun.: PERGAMON-ELSEVIER SCIENCE LTD, 1998. - Vol. 105, Is. 5. - P.323-326. - ISSN 0038-1098, DOI 10.1016/S0038-1098(97)10086-2
Примечания : Cited References: 11
Аннотация: The incommensurate modulation has been found in the hexagonal Cs3Bi2I9, belonging to the A(3)B(2)X(9) family of the layered compounds. The second order normal-incommensurate transition at T-i = 224 K is accompanied by the symmetry change P6(3)/mmc - P2(1)/m. The transition into a ferroelastic incommensurate phase occurs at the zone center, according to the NQR and ultrasonic measurements. (C) 1998 Elsevier Science Ltd.
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6.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhou, Jun, Rong, Ximing, Molokeev M. S., Wang, Yulong, Yun, Xiangyan, Xu, Denghui, Li, Xiong
Заглавие : Alloying Cs+ into Rb2ZrCl6:Te4+ toward highly efficient and stable perovskite variants
Коллективы : Beijing Natural Science FoundationBeijing Natural Science Foundation [2214068]; National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [61705003]; Beijing Technology and Business University Research Team Construction Project [PXM2019_014213_000007, PXM2020_014213_000017]
Место публикации : Mat. Chem. Front. - 2021. - Vol. 5, Is. 13. - P.4997-5003. - ISSN 2052-1537(eISSN), DOI 10.1039/d1qm00302j
Примечания : Cited References: 37. - This work is supported by Beijing Natural Science Foundation (No. 2214068), the National Natural Science Foundation of China (No. 61705003), and the Beijing Technology and Business University Research Team Construction Project (No. PXM2019_014213_000007 and PXM2020_014213_000017)
Предметные рубрики: TELLER
PHOTOLUMINESCENCE
TELLURIUM(IV)
COMPLEXES
PHOSPHORS
Аннотация: Doping or alloying in perovskites and perovskite variants provides a promising way for modulating the electronic and photoluminescence properties and the structural stability. In this work, a series of yellow-emitting Rb2−xCsxZrCl6:Te4+ solid solution phosphors were prepared by a hydrothermal method, and their broad emission is assigned to the triplet 3P1–1S0 self-trapped excitons (STEs). Upon increasing the alloying ion Cs+, the yellow emission can be greatly enhanced by a stronger Jahn–Teller distortion. Moreover, Cs2ZrCl6:Te4+ shows a high photoluminescence quantum yield (PLQY), and impressive thermal and anti-water stability. This doping–alloying strategy presents a new direction towards designing lead-free, high-performance and stable perovskite derivatives.
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7.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Makarova I. P., Misyul S. V., Muradyan L. A., Bovina A. F., Simonov V. I., Aleksandrov K. S.
Заглавие : Anharmonic thermal atomic vibrations in the cubic phase of Cs//2NaNdCl//6 single crystals.
Место публикации : Phys Status Solidi B. - 1984. - Vol. 121, Is. 2. - P.481-486. - ISSN 0370-1972
Ключевые слова (''Своб.индексиров.''): crystals--x-rays - diffraction--anharmonic thermal atomic vibrations--cubic phase--phase transitions--cesium compounds
Аннотация: Thermal atomic vibrations in the cubic phase of Cs//2NaNdCl//6 single crystal undergoing the structural phase transition (PT) at 138 K are investigated from the data of X-ray diffraction obtained at 278, 218, and 148 K. A significant anisotropy of thermal vibrations and their deviations from harmonic behavior are found for the Cl-atoms of the structure. These atoms displace from their equilibrium positions below PT due to the tilts of the octahedral groups.
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8.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : BAGAUTDINOV B. S., ALEKSANDROVA I. P.
Заглавие : X-RAY-INVESTIGATIONS OF MODULATIONS IN CS2ZNI4
Разночтения заглавия :us: X-ray investigations of modulations in Cs2ZnI4
Место публикации : Solid State Commun.: PERGAMON-ELSEVIER SCIENCE LTD, 1994. - Vol. 90, Is. 12. - P817-820. - ISSN 0038-1098, DOI 10.1016/0038-1098(94)90251-8
Примечания : Cited References: 8
Предметные рубрики: INCOMMENSURATE PHASES
CRYSTALS
CS2CDI4
Аннотация: The X-ray diffractometer patterns of a reciprocal space have been analyzed in the modulated phases of Cs2ZnI4 crystals. The character of the atomic displacements in the modulation wave has been established. The temperature behaviour of both a modulation wave vector and amplitude has been determined from the position and intensity of satellite reflections.
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9.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : FLEROV I. N., GOREV M. V., KOT L. A., GRANKINA V. A.
Заглавие : CALORIMETRIC STUDY OF PHASE-TRANSITIONS IN ORTHORHOMBIC AND MONOCLINIC CS2CDI4
Место публикации : Fiz. Tverd. Tela: MEZHDUNARODNAYA KNIGA, 1988. - Vol. 30, Is. 7. - P1948-1951. - ISSN 0367-3294
Примечания : Cited References: 4
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10.

Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Zhou J., Xia Z., Molokeev M. S., Zhang X., Peng D., Liu Q.
Заглавие : Composition design, optical gap and stability investigations of lead-free halide double perovskite Cs2AgInCl6
Место публикации : J. Mater. Chem. A: Royal Society of Chemistry, 2017. - Vol. 5, Is. 29. - P.15031-15037. - ISSN 20507488 (ISSN), DOI 10.1039/c7ta04690a
Примечания : Cited References: 42. - The present work was supported by the National Natural Science Foundation of China (Grants 91622125 and 51572023), Natural Science Foundations of Beijing (2172036), and Fundamental Research Funds for the Central Universities (FRF-TP-16-002A3). XZ acknowledges the support from the National Key Research and Development Program of China Grant No. 2016YFB0700700.
Ключевые слова (''Своб.индексиров.''): crystal growth--design for testability--energy gap--optical properties--perovskite--perovskite solar cells--solar absorbers--solar cells--structural design--band gap engineering--direct-gap semiconductor--environmentally benign--hydrothermal crystal growth--hydrothermal reaction--optoelectronic applications--rock salt structures--solar cell absorbers--crystal structure
Аннотация: The discovery of lead-free double perovskites provides a feasible way of searching for air-stable and environmentally benign solar cell absorbers. Herein we report the design and hydrothermal crystal growth of double perovskite Cs2AgInCl6. The crystal structure, morphology related to the crystal growth habit, band structure, optical properties, and stability are investigated in detail. This perovskite crystallized in a cubic unit cell with the space group Fm3m and is composed of [AgCl6] and [InCl6] octahedra alternating in a ordered rock-salt structure, and the as-obtained crystal size is dependent on the hydrothermal reaction time. Cs2AgInCl6 is a direct gap semiconductor with a wide band gap of 3.23 eV obtained experimentally and 3.33 eV obtained by DFT calculation. This theoretically predicted and experimentally confirmed optical gap is a prototype of the band gaps that are direct and optically allowed except at the single high-symmetry k-point, which didn't raise interest before but have potential applications in future technologies. Cs2AgInCl6 material with excellent moisture, light and heat stability shows great potential for photovoltaic and other optoelectronic applications via further band gap engineering. © 2017 The Royal Society of Chemistry.
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