Studies on structural characterization and near white light emission through energy transfer between Ce3+ and Tb3+ in barium gallium borosilicate glasses

Rao, T. Sambasiva; Reddy, D.V. Krishna; Taherunnisa, S.K.; Reddy, A. Siva Sesha; Rao, P. Venkateswara; Veeraiah, N.; Reddy, M. Rami

doi:10.1016/j.molstruc.2019.04.065

Cited by 11 publications

(10 citation statements)

References 40 publications

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“…For the relation to hold value, the experimental and calculated values should be nearly identical and form a linear trend with a slope of 1. From Figure 1, it is seen that the previous assessment that the Gladstone–Dale relation holds reasonably well for silicate glasses is a valid assumption 36–63 . For the purpose of this discussion, measurements done at 589 and 589.3 nm were considered sodium D line values.…”

Section: Resultsmentioning

confidence: 88%

The Gladstone–Dale relation: Applications in oxide glasses

Tsekrekas,

Clare

2023

Int J of Appl Glass Sci

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The Gladstone–Dale relation is among one of the many formulae put forward in the 19th century to try and relate the index of refraction and density of a material. Compared to other relations of the time, the Gladstone–Dale relation is advantageous as it is relatively simple to use. It has been suggested that the Gladstone–Dale relation can be used as a reliable way to calculate the index of refraction for oxide glasses because of the additive nature of the relation, making it ideal for glass compositions. The reliability of the Gladstone–Dale relation with regards to its use in glass science has been explored. Various oxide glass systems that use different network formers, conditional network formers, modifying oxides, and dopants have been obtained from the literature to determine the reliability of the relation with regards to index‐of‐refraction calculations. The benefits and faults of the relation are discussed, and it was found that it is not universally applicable for all glass compositions.

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Section: Resultsmentioning

confidence: 88%

The Gladstone–Dale relation: Applications in oxide glasses

Tsekrekas,

Clare

2023

Int J of Appl Glass Sci

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“…32,39,75 The 0.6 mol % Ce 2 O 3 -and Tb 3+ -doped BaGaBSi glass is much more steady against devitrification and shows extreme intensity, therefore making this composition promising for white LEDs. 41 The Dy 2 O 3 blended trialkali oxyfluoroborate (NKLB-Dy), lithium lead gadolinium silicate (LPDy), Li 2 O-BaO-GdF 3 −SiO 2 (LGFDy), LiF-CaO-Bi 2 O 3 −B 2 O 3 , and calcium boroaluminate (CaBAl) glasses have a higher yellowto-blue ratio indicating the covalent character of the Dy−O bond, making them potential candidates for laser and white light generation applications. 33,43,44,80,81 The 0.5 mol % Dy 2 O 3doped lithium borate glasses have the maximum emission intensity under UV irradiation (i.e., 350 nm) also signifying their practicality in manufacturing contemporary bright white LED bulbs.…”

Section: Reos' Optical Applications and Prospectsmentioning

confidence: 99%

“…It is seen that eight (8) REOs such as Ce 2 O 3 , Sm 2 O 3 , Eu 2 O 3 , Gd 2 O 3 , Dy 2 O 3 , Y 2 O 3 , Er 2 O 3 , and Yb 2 O 3 were significantly applied in various research works for different optical applications. These include UV LED pumped solid-state white light generation, intense and wideband white light emission, ,− white LED, − red light emission, , orange LED, green light emission, solid-state lighting devices, ,,− various types of lasers, ,− UV LED, , nonlinear optical devices, ,, near-infrared (NIR) luminescence, NIR light, optoelectronics, ,,, optical fiber amplification, , active and passive optical fiber, optical display, , multifunctional and enhanced luminescence, , photocatalytic applications, , low-temperature thermal imaging, , optical amplification for medical diagnosis, halide lamp, smart light (circadian cycle), X-ray induced luminescence (XRL), etc. These eight REOs have been preferred in consideration of their significant spectroscopic characteristics and tremendous industrial prospects in the manufacturing of next-generation optical devices.…”

Section: Classification Of Reo’s Optical Applicationsmentioning

confidence: 99%

“…Several successful studies were conducted in tailoring glass system types and the amount of RE ions to improve the luminescence properties up to the desired range. Among other glass host materials, borate-based glasses showed noteworthy results when doped with Dy 3+ ions. ,,,− ,− The incorporation of borate improves the glass property (i.e., the nonlinear refractive index) and provides stability to the glass matrix. The higher phonon energies and fragility problems of borate-based glasses can be resolved by using alkali elements, and several features such as dynamic luminescence center, amplified afterglow due to f-f ion-trapping shell for a prolonged period, robust excitation band around 454 nm, etc., over other RE ions have made the Dy 3+ ion popular among researchers for a white light generation .…”

Section: Reos’ Optical Applications and Prospectsmentioning

confidence: 99%

“…The Y 2 O 3 transparent ceramic showed a broad prospect in white light emission when doped with three RE ions, that is, Tm 3+ /Er 3+ /Yb 3+ . A higher lifetime, quantum efficacy, and stimulated emission cross-section for Dy 2 O 3 -doped zinc borotellurite glasses, nanoglass-ceramics, and NBSAZBDy glasses could be apposite for commercial manufacturing white light lasers. ,, The 0.6 mol % Ce 2 O 3 - and Tb 3+ -doped BaGaBSi glass is much more steady against devitrification and shows extreme intensity, therefore making this composition promising for white LEDs . The Dy 2 O 3 blended trialkali oxyfluoro-borate (NKLB-Dy), lithium lead gadolinium silicate (LPDy), Li 2 O-BaO-GdF 3 –SiO 2 (LGFDy), LiF-CaO-Bi 2 O 3 –B 2 O 3 , and calcium boroaluminate (CaBAl) glasses have a higher yellow-to-blue ratio indicating the covalent character of the Dy–O bond, making them potential candidates for laser and white light generation applications. ,,,, The 0.5 mol % Dy 2 O 3 -doped lithium borate glasses have the maximum emission intensity under UV irradiation (i.e., 350 nm) also signifying their practicality in manufacturing contemporary bright white LED bulbs .…”

Section: Reos’ Optical Applications and Prospectsmentioning

confidence: 99%

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A Review on Optical Applications, Prospects, and Challenges of Rare-Earth Oxides

Hossain

Ahmed

et al. 2021

ACS Appl. Electron. Mater.

100

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In small- and large-scale industries, manipulable optical characteristics are desired. In this regard, rare-earth oxides (REOs) have been providing pragmatic attributes in terms of successful implementations and promising prospects throughout the last few decades. Currently, there is no comprehensive literature review on REOs that can aid researchers in focusing on industry-relevant emerging materials. Therefore, this review reports studies that have been able to experimentally utilize the physical, chemical, thermal, electronic, spectroscopic, and photocatalytic properties of REOs in the optical field. The brief and focused review finds that the most pronounced applications of REOs in the optical field are in white light and laser, while the prospective ground likely lies in optoelectronics, fiber optic applications, and miscellaneous repertoires that incorporate an innovative utilization of an electronic configuration of REOs. From the perspective of this review, the versatility of an REO in the optical field has become prominent and quantified by the successful implementations of REOs in white light and nonwhite light applications. Furthermore, the innovative applications of REOs include but are not limited to the development of solid-state optical devices, optoelectronic systems, and photocatalytic agents. Specifically, their futuristic applications are likely to be led by the development of stronger emission devices and the obtaining of flexible doping characteristics by several ions such as Li+, Eu3+, Dy3+, Nd3+, La3+, Yb3+, etc. at different levels, which will render the pathway for further exploration in this regard. However, the improvement in terms of methodological attributes requires a serious consideration of overcoming the limitation of thermal stability, lack of exploration of several types of lights, photodarkening in critical applications, lack of applicability at a wide range of temperatures, and so on. From an industrial perspective, it can be conjectured from the reported literature that the challenges will be overcome at a large scale within a few years due to the expedited technological advancements of the experimental repertoires, rendering the REO applications in the optical field reasonably economic and commercially viable. In short, this is the first review that objectively considers the applications and prospects of REOs, which will essentially invoke several studies to investigate the specific properties and viability of REOs in the optical field.

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