Bridgman growth of lead molybdate crystals

Chen, Hongbing; Ge, Congxin; Li, Rongsheng; Wang, Jinhao

doi:10.1007/s10853-006-0175-8

Cited by 4 publications

(4 citation statements)

References 6 publications

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“…Usually, organic compounds are chemically unstable at their melting temperature and high vapor pressure. Therefore, the melt crystallization technique is suitable for organic–inorganic halide perovskite materials with a specific melting point. , The Bridgman technique is a commonly used method for growing crystals in a sealed ampoule. , In this process, a quartz ampoule packed with reactants is sealed under vacuum, and then, a temperature gradient is applied. Later, spontaneous nucleation is induced at the tip of the ampoule at a particular temperature; then, the crystallization front propagates to the molten material.…”

Section: Growth Methods Of Perovskite Single Crystalsmentioning

confidence: 99%

“…Therefore, the melt crystallization technique is suitable for organic−inorganic halide perovskite materials with a specific melting point. 60,61 The Bridgman technique is a commonly used method for growing crystals in a sealed ampoule. 60,62 In this process, a quartz ampoule packed with reactants is sealed under vacuum, and then, a temperature gradient is applied.…”

Section: Crystal Structurementioning

confidence: 99%

See 1 more Smart Citation

Single Crystals: The Next Big Wave of Perovskite Optoelectronics

Murali

Kolli

Yin

et al. 2019

ACS Materials Lett.

103

100

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Contemporary advancements in perovskite semiconductors are visibly impacting the progress of light conversion applications. These alluring photo absorbers have gained wide consideration owing to their simple processing and striking optoelectronic properties. Although polycrystalline perovskite thin films exhibit phenomenal performance in energy harvesting devices, they suffer from severe instabilities arising from morphological disorder and surface degradation under ambient conditions. Recent progress in perovskite single-crystals, which in theory should outperform their polycrystalline thin-film counterparts, has been demonstrated to surmount these challenges due to the exceptional optoelectronic properties, such as low trap density, high mobility, low intrinsic carrier concentration and long carrier diffusion length.However, most of the growth approaches used for single-crystal syntheses produce very thick crystals and 2 | P a g e subsequently, the related optoelectronic applications are very limited. Given the potential of perovskite single crystals, to break a new path for perovskite optoelectronic devices relies on understanding sustainable issues arising from interfacial/integration losses and developing passivation strategies to achieve performance parity in open ambient. Therefore, the current review provides a comprehensive overview of the advantages, limitations, and challenges associated with growth methods of single-crystals and their chemical stability, device configurations, photophysics, charge carrier dynamics and photovoltaic applications. TOC GRAPHICSIn recent years, metal halide perovskites (MHP) have captivated the interest of researchers owing to their engrossing properties and phenomenal performances in numerous optoelectronic devices. In the early 1980s, MAPbX3 (MA = CH3NH3, X = Cl¯, Br¯, I¯) and MASnBrxI3-x-based semiconductors were merely considered to be promising for photovoltaics. 1 Nevertheless, their physical and chemical properties have not been meticulously studied. A turning point in the field occurred in 2009 when Miyasaka first reported a thin film-based solar cell with an efficiency of 3.81% and photovoltage of 0.96 V showing external quantum efficiency (EQE) of 65%. 2 Later, many researchers have contributed for the synthesis and device applications of single-crystal perovskite in solar cells and other optoelectronic applications. 3,4 Moreover, 3 | P a g e single-crystal perovskites (SCPs) are a unique class of materials that have been used as solar radiation absorbers. It should be noted that the MAPbX3 (X = Br ─ , I ─ ) perovskite single crystals possess unprecedented long charge carrier diffusion lengths (10 µm) and a striking low trap density (10 9 to 10 10 cm -3 ). 5 More specifically, under 1 sun illumination, the single-crystals of MAPbI3 achieved diffusion lengths of 175 μm and exceeding 3 mm under weak light for both electrons and holes. [6][7] To achieve an efficient device performance, long-range ordered pattern in a perovskite lattice is desirable to significantly...

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Section: Growth Methods Of Perovskite Single Crystalsmentioning

confidence: 99%

Section: Crystal Structurementioning

confidence: 99%

Single Crystals: The Next Big Wave of Perovskite Optoelectronics

Murali

Kolli

Yin

et al. 2019

ACS Materials Lett.

103

100

View full text Add to dashboard Cite

show abstract

“…PbMoO 4 (PMO) is one of the most extensively studied materials because of its wider applications in acousto-optics [1], optoelectronics [2], photocatalysis [3], and high voltage measuring devices. Single crystal growth of PMO by Czochralski technique was reported elsewhere in [4][5][6][7][8][9]. The difficulties arisen during crystal growth from bubble formation [10], compositional changes due to evaporation of the volatile MoO 3 powders [11], cracking of the crystal during and after growth and coloration, which deteriorates the optical quality of the crystal, were extensively studied and reported [12,13].…”

Section: Introductionmentioning

confidence: 99%

PbMoO4 Synthesis from Ancient Lead and Its Single Crystal Growth for Neutrinoless Double Beta Decay Search

et al. 2020

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A powder synthesis of PbMoO4 (PMO) from ancient lead (Pb) and deeply purified commercial MoO3 powders was performed using a wet chemistry technique to achieve the low radioactivity scintillator for neutrinoless double beta decay search in 100Mo. The synthesized powders were used to grow single crystals of PbMoO4 by the Czochralski technique in an Ar environment. The luminescence and scintillation properties were measured with excitations using UV, X- and γ-rays in the temperature range of 10–300 K. Annealing of the grown PMO crystal in an air atmosphere significantly enhanced the scintillation light yield compared to that measured before annealing. The scintillation light yield of grown PMO crystal at 10 K was found to be 127% to that of a reference PMO crystal under 662 keV γ-rays excitation from a 137Cs source. The background measurement of the grown crystal performed at 50 K shows a lower internal activity from 210Pb compared to that of reference PMO (grown from modern Pb) crystal. These preliminary performances show that the PMO crystal grown from ancient Pb and deeply purified MoO3 powders has a great potential to be used as a cryogenic scintillator for the neutrinoless double beta decay search in 100Mo.

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“…PbMoO4 (PMO) is one of the extensively studied material because of its wider applications in acousto-optics [1], optoelectronics [2], photocatalysis [3], and high voltage measuring devices. Single crystal growth of PMO by Czochralski technique were reported elsewhere in references [4][5][6][7][8][9]. The difficulties arose during crystal growth from bubble formation [10], compositional changes due to evaporation of the volatile MoO3 powders [11], cracking of the crystal during and after growth and coloration which deteriorates the optical quality of the crystal were extensively studied and reported [12,13].…”

Section: Introductionmentioning

confidence: 99%

PbMoO<sub>4 </sub>Synthesis from Ancient Lead and Its Single Crystal Growth for Neutrinoless Double Beta Decay Search

Khan¹,

Aryal²,

Kim³

et al. 2020

Preprint

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A powder synthesis of PbMoO4 from ancient lead (Pb) and deeply purified commercial MoO3 powders was performed using a wet chemistry technique to achieve the low radioactivity scintillator for neutrinoless double beta decay search in 100 Mo. The synthesized powders were used to grow single crystals of PbMoO4 by a Czochralski technique in Ar environment. The luminescence and scintillation properties were measured with excitations using UV, X-and γ-rays in temperature range of 10-300 K. Annealing of the grown PMO crystal in air atmosphere enhanced the scintillation light yield by ~3 orders of magnitude compared to that measured before annealing. The scintillation light yield of grown PMO crystal at 10 K is found to be 127% to that of a reference PMO crystal under 662 keV γ-rays excitation from a 137 Cs source. The background measurement of the grown crystal performed at 50 K shows negligible activity from 210 Pb compared to that of reference PMO crystal. These preliminary performances show that the PMO crystal grown from ancient Pb and deeply purified MoO3 powders has the great potential to be used as cryogenic scintillator for the neutrinoless double beta decay search in 100 Mo.

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Bridgman growth of lead molybdate crystals

Cited by 4 publications

References 6 publications

Single Crystals: The Next Big Wave of Perovskite Optoelectronics

Single Crystals: The Next Big Wave of Perovskite Optoelectronics

PbMoO4 Synthesis from Ancient Lead and Its Single Crystal Growth for Neutrinoless Double Beta Decay Search

PbMoO<sub>4 </sub>Synthesis from Ancient Lead and Its Single Crystal Growth for Neutrinoless Double Beta Decay Search

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