A NEW EFFECTIVE K7SrY2B15O30: Eu3+ SAMPLE FOR WHITE LEDS YIELDING NON-DOSAGE ABATEMENT AS WELL AS STRONG HEAT CONSISTENCY

Abstract

In this study, a unique high-temperature sintering process was used to create a red-emitting, non-dosage abatement K₇SrY_2-2xB₁₅O₃₀: xEu³⁺ (KSEBOE) (0.1 ≤ x ≤ 1.0) sample. The phosphors were suggested with the purpose of accomplishing warm and good-color-rendering white light for phosphor-conversion LED. By steadily increasing doping Eu³⁺ ions, K₇SrEu₂B₁₅O₃₀ (KSEBO) may demonstrate impressive photoluminescent proficiency and the greatest discharge wavelength focalized under 617 nm. Additionally, the absence of dosage abatement may result from the large range (7.012 Å) among two Eu³⁺ granules. The phosphor exhibited great inner quantum yield (~ 78.71%), superb hue clarity (~88.32%), as well as potent heat consistency (with discharge intenseness under 140 ◦C reaching nearly 97.31%). The strong white illumination yielding a low correlated chroma temperature (CCT) reaching 4211 K as well as chroma coordination shown as (0.3675, 0.3556) may be produced by covering BaMgAl₁₀O₁₇: Eu²⁺, (Ba, Sr)₂SiO₄: Eu²⁺, along with KSEBO above one n-UV chip. The KSEBO phosphor also demonstrated notable n-UV/blue-light scattering performance, especially at high doping concentrations (30-40%), enabling its potential to improve the color uniformity of the white LED. Shortly, the non-dosage abatement KSEBOE molecule possesses a strong chance of being a red phosphor sample for the solid-state illumination industry.