Controlling the structure and morphology of zinc borate by adjusting the reaction temperature and pH value: formation mechanisms and luminescent properties

Abstract

Zinc borate micro/nanostructured phosphors with three different compositions and structures have been prepared. When Tb3+ ions were doped into the zinc borate matrix, the three phosphors yielded tunable emissions.

Luminescence properties in relation to controllable morphologies of Ba3[Ge2B7O16(OH)2](OH)(H2O):Eu3+ and its thermal conversion product Ba3Ge2B6O16:Eu3+

“…It is widely accepted that the luminescence properties of the phosphors are strongly dependent on the morphology, size, crystallinity, the center of luminescence and the density of defects. [18][19][20][21][22][23][24][25] The hexahedral-ake morphology of Ba 3 [Ge 2 B 7 -O 16 (OH) 2 ](OH)(H 2 O):Eu 3+ shows the shorter edge and thickness with a larger specic surface area than the rhombohedron-like morphology and the thorn-ball-like morphology, which can result in a high concentration of luminescence centers, causing enhancement of the emission intensity. 31,32 The photoluminescence decay curves of the samples with different morphologies Ba (1)…”

“…[13][14][15][16][17] The properties and applications of luminescent materials are strongly dependent on their chemical composition, crystal structure, size and morphology. 18 For instance, Zhu et al have investigated the effects of trace alkali metal ion (Li + , Na + , K + ) doping on the morphology and photoluminescence properties, and they deemed that the morphology inuences the luminescence properties by geometric effects. Scattering occurs more frequently because of the distinctive particle shapes and surface roughness, which results in less absorption and decreased luminous efficiency.…”

A novel synthesis of nanoflower-like zinc borate from zinc oxide at room temperature

“…Zinc borate compound is a commercial material of significant interest that is commonly used in many different fields such as paints, plastic, rubber, ceramics, wood applications due to its abundance, high thermal stability and non-toxicity [1][2][3][4][5]. Besides, zinc borate is an important inorganic compound that is commonly used in fireretardant materials [6,7].…”

“…Various techniques have been used so far for the synthesis of zinc borate nanostructures [14][15][16][17]. However, most of them require temperature [3], modifying agents [16,[18][19][20], template [17], which may lead to the highcost problems. The obtained nanoparticles are still large; it seems very difficult to get the nanoparticles with the size smaller than 20 nm.…”

Luminescence performance of poly(aryl ether)s membranes with different morphologies

“…In fact, size and shape of the luminescent materials have an important influence on the photochemical stability, emission intensity, emission bandwidth and the efficiency of the device. Currently, there is growing interest in exploring novel micro‐ or nanometer scale luminescent materials . Different from bulk counterparts, the micro‐ or nanostructure materials possess fascinating physical and optical properties, for example a broad visible spectrum and increased luminescence efficiencies.…”