Spectral investigations of Mn2+ doped Zn3(BO3)2 nanopowder

Sarma, G.V.S.S.; Reddy, Ch. Venkata; Vattikuti, S.V. Prabhakar; Krishna, Ch. Rama; Murthy, P. Narayana; Ravikumar, R.V.S.S.N.

doi:10.1016/j.molstruc.2013.05.033

Cited by 10 publications

(4 citation statements)

References 30 publications

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“…The weak absorption peak present at 1250 cm −1 is ascribed to asymmetric stretching vibration of B–O bond from ortho‐borate group . The absorption band around 1450 cm −1 is assigned to the B–O stretching vibration of [BO 3 ] triangle unit . All of these results suggest that the borosilicate glass network mainly consists of [SiO 4 ] tetrahedron, [BO 4 ] tetrahedron, and [BO 3 ] triangle through interconnection of apical oxygen atoms.…”

Section: Resultsmentioning

confidence: 84%

“…The absorption band in 750‐650 cm −1 region is ascribed to the Al–O bending vibration of [AlO 4 ] unit, Si–O bending vibration of [SiO 4 ] tetrahedron unit, and the B–O bending vibration of planar [BO 3 ] unit . The absorption peak located at 1010 cm −1 might be contributed from the B–O asymmetric stretching vibration of [BO 4 ] tetrahedron unit and the Si–O stretching vibration of [SiO 4 ] tetrahedron unit . The weak absorption peak present at 1250 cm −1 is ascribed to asymmetric stretching vibration of B–O bond from ortho‐borate group .…”

Section: Resultsmentioning

confidence: 99%

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Effect of topological structure on photoluminescence of PbSe quantum dot‐doped borosilicate glasses

Liu

Jiang

et al. 2017

J Am Ceram Soc

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Borosilicate glasses doped with PbSe quantum dots (QDs) were prepared by a conventional melt-quenching process followed by heat treatment, which exhibit good thermal, chemical, and mechanical stabilities, and are amenable to fiberdrawing. A broad near infrared (NIR) photoluminescence (PL) emission (1070-1330 nm) band with large full-width at half-maximum (FWHM) values (189-266 nm) and notable Stokes shift (100-210 nm) was observed, which depended on the B 2 O 3 concentration. The PL lifetime was about 1.42-2.44 ls, and it showed a clear decrease with increasing the QDs size. The planar [BO 3 ] triangle units forming the two-dimensional (2D) glass network structure clearly increased with increasing B 2 O 3 concentration, which could accelerate the movement of Pb 2+ and Se 2À ions and facilitate the growth of PbSe QDs. The tunable broadband NIR PL emission of the PbSe QD-doped borosilicate glass may find potential application in ultra-wideband fiber amplifiers. K E Y W O R D S crystallization, glass topological structure, optical properties, PbSe quantum dots, photoluminescence lifetime How to cite this article: Xu Z, Liu X, Jiang C, et al. Effect of topological structure on photoluminescence of PbSe quantum dot-doped borosilicate glasses.

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Section: Resultsmentioning

confidence: 84%

Section: Resultsmentioning

confidence: 99%

Effect of topological structure on photoluminescence of PbSe quantum dot‐doped borosilicate glasses

Liu

Jiang

et al. 2017

J Am Ceram Soc

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“…The Fourier‐transform infrared (FTIR) spectrum of FBO@C in Figure S2b (Supporting Information) shows a typical vibration mode of both BO 3 units and FeO 6 octahedral. [ 31,32 ] The carbon content in FBO@C was measured via TG analysis, which indicated the carbon content of 2.2 wt% (details calculations are included in Figure S2c,d, Supporting Information). According to the N 2 adsorption/desorption isotherms in Figure S3 (Supporting Information), the specific surface area is about 14.9 m 2 g −1 .…”

Section: Resultsmentioning

confidence: 99%

All‐Climate Iron‐Based Sodium‐Ion Full Cell for Energy Storage

Cao

Dong

et al. 2021

Adv Funct Materials

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The anode materials for sodium‐ion batteries (SIBs) such as soft carbon, hard carbon, or alloys suffer from low specific capacity, poor rate capability, and high cost. Various transition metal oxides materials possess high specific capacity and suitable working potential, however, huge volume change and unstable electrode/electrolyte interfaces limit their practical applications. Herein, an ultrathin carbon‐coated iron‐based borate, (Fe3BO5), as an anode material for SIBs is reported. The carbon coated Fe3BO5 composite as an anode material possesses a reversible specific capacity of 548 mAh g−1 with a high initial coulombic efficiency of 72.6% at a current density of 50 mA g−1, and maintains a capacity retention ratio of 99% after 1000 cycles at 2000 mA g−1. Moreover, this anode can work well over a wide temperature range (‐40–60 °C). Furthermore, a sodium‐ion full cell using this anode coupling with iron‐based cathode (Na3Fe2(PO4)2(P2O7)@rGO) cathode is fabricated, which exhibits a wide operating temperature range from −40 to 60 °C with a maximum energy density of 175 Wh Kg−1 and a maximum power density of 1680 W Kg−1. Most importantly, this full‐cell configuration is low‐cost due to its inexpensive iron based raw material for both anode and cathode.

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“…The authors reported Mn 2+ ions doped Zn 3 (BO 3 ) 2 nanopowder by co-precipitation method. EPR and optical absorption results revealed that the doped Mn 2+ ions occupied at octahedral site symmetry and PL shows the ultraviolet emission at room temperature [16]. Iron ions have strong bearing on electrical, optical and magnetic properties of materials.…”

Section: Introductionmentioning

confidence: 98%