Persistent mechanoluminescence induced by elastic deformation of ZrO2:Ti phosphors

Chandra, B. P.

doi:10.1016/j.jlumin.2010.06.023

Cited by 24 publications

(8 citation statements)

References 27 publications

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“…Nevertheless, just a few works in the literature covered the PL and RL features of Ti‐doped metal oxides. For instance, Ti‐doped Zr oxide materials have been recently proposed as RE‐ free blue phosphors for industrial applications, stress indicators, damage sensors, and other mechano‐optical devices, which take advantage of the bright mechanoluminescence of these systems . Lanthanum hafnates single crystals have attracted considerable interest as scintillators thanks to the enhancement of their luminescence properties due to Ti incorporation .…”

Section: Introductionmentioning

confidence: 99%

The Bright X‐Ray Stimulated Luminescence of HfO₂ Nanocrystals Activated by Ti Ions

Villa

Moretti

Fasoli

et al. 2019

Advanced Optical Materials

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The recent trends in scintillator technologies stimulate research efforts toward the development of novel materials morphologies, such as nanoparticles, able to efficiently convert ionizing radiations into light. For example, scintillating nanoparticles attract great interest in medical oncological therapies. In this work, the structural and morphological properties of HfO2:Ti nanoparticles with Ti concentrations from 0.03 to 10 mol% and subjected to calcination up to 1000 °C are thoroughly characterized; moreover, X‐ray photoelectron spectroscopy reveals the incorporation of Ti in both Ti (III) and Ti (IV) chemical states in as prepared samples, while the exclusive presence of Ti(IV) is unambiguously identified in calcined nanoparticles. The optical emission under X‐ray excitation evidences an intense Ti (IV)‐related luminescence at 2.5 eV in high temperature calcined samples with a few microseconds scintillation lifetime, and efficiency comparable to that of Bi4Ge3O12 reference scintillator. Finally, the competitive role of defects in charge carriers capture is demonstrated by the monotonic increase of the 2.5 eV band during prolonged X‐ray irradiation, more evident for nanoparticles with titanium concentration below 1 mol%. HfO2:Ti may also find application in X‐ray triggered oncological therapies by using the Ti (IV)‐related bright radioluminescence to excite photosensitizer molecules for singlet oxygen generation.

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Section: Introductionmentioning

confidence: 99%

The Bright X‐Ray Stimulated Luminescence of HfO₂ Nanocrystals Activated by Ti Ions

Villa

Moretti

Fasoli

et al. 2019

Advanced Optical Materials

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“…It has the advantage of a high mechanical toughness and a thermal expansion coefficient closed to that of many metals, and can act as a reactive element (Meetei et al, 2012;Zhang et al 2008). Recently, there are several reports on different kind luminescence from stress-activated ZrO 2 :Ti, and intense visible light and afterglow were observed (Akiyama, Xu, & Nonaka, 2002;Chandra, 2010). But in over knowledge, no specific studies on thermoluminescence behaviour of ZrO 2 :Ti was done.…”

Section: Introductionmentioning

confidence: 99%

Thermoluminescence glow curve for UV induced ZrO2:Ti phosphor with variable concentration of dopant and various heating rate

Tiwari¹,

Kuraria²,

Tamrakar

2014

Journal of Radiation Research and Applied Sciences

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supposedly replaces the Zr 4þ sites. The traps and the glow curve structure are also dependent upon the morphology of the surface area which in turn depends on the nanocrystallite size. The nanocrystallite size depends also on the dopant ion. Furthermore, the obtained experimental results show that the presence of dopant ions also modifies the TL recombination efficiency which was found to be different for each irradiation type and the specific exposed material. It is important to notice that using the right dopant concentration, it is possible to maximize the TL efficiency and improve sensitivity and dose linearity for a specific irradiation type. For dual TL glow curve present in the sample it is very difficult to calculate the kinetic parameters from peak shape method. The kinetic parameters are calculated by (Computerized glow curve convolution technique) CGCD technique.

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“…Only few papers are related to the investigation of EML and PML. The papers related to the studies of EML and PML are: .…”

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confidence: 99%

Survey of the literature on mechanoluminescence from 1605 to 2013

2014

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Mechanoluminescence (ML) is a type of luminescence induced by any mechanical action on solids. The light emissions induced by elastic deformation, plastic deformation and fracture of solids are called elastico ML (EML), plastico ML (PML) and fracto ML (FML), respectively. Whereas nearly 50% of all organic molecular solids and inorganic salts exhibit FML, only a few solids exhibit EML and PML. The EML and FML of certain solids are so intense that they can be seen during daylight with the naked eye. Mechanolumnescence has a great potential for use in different types of mechano-optical devices such as stress sensors, damage sensors, impact sensors, fracture sensors and safety management monitoring systems. This article reports a survey of the literature from 1605 to 2013. Mechanoluminescence is studied by physicists, chemists, material scientists, geologists, medical scientists, engineers and technologists, among others and researchers will certainly benefit from the literature survey on ML given here. In addition, the field of mechanoluminescence may attract the interest of many new researchers.

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Persistent mechanoluminescence induced by elastic deformation of ZrO2:Ti phosphors

Cited by 24 publications

References 27 publications

The Bright X‐Ray Stimulated Luminescence of HfO₂ Nanocrystals Activated by Ti Ions

The Bright X‐Ray Stimulated Luminescence of HfO₂ Nanocrystals Activated by Ti Ions

Thermoluminescence glow curve for UV induced ZrO2:Ti phosphor with variable concentration of dopant and various heating rate

Survey of the literature on mechanoluminescence from 1605 to 2013

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Persistent mechanoluminescence induced by elastic deformation of ZrO2:Ti phosphors

Cited by 24 publications

References 27 publications

The Bright X‐Ray Stimulated Luminescence of HfO2 Nanocrystals Activated by Ti Ions

The Bright X‐Ray Stimulated Luminescence of HfO2 Nanocrystals Activated by Ti Ions

Thermoluminescence glow curve for UV induced ZrO2:Ti phosphor with variable concentration of dopant and various heating rate

Survey of the literature on mechanoluminescence from 1605 to 2013

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The Bright X‐Ray Stimulated Luminescence of HfO₂ Nanocrystals Activated by Ti Ions

The Bright X‐Ray Stimulated Luminescence of HfO₂ Nanocrystals Activated by Ti Ions