The use of orange-red emitting Ba2Ca(BO3)2:Sm3+ phosphor to improve chromaticity and luminance of conventional white leds

Authors

Thao, Nguyen Thi Phuong, and Hsiao Yi Lee

Source title

Journal of Advanced Engineering and Computation

Publication year
2025
Abstract

The characteristics of configuration and illumination of Sm 3+ incorporated Ba 2 Ca (BO 3) 2 samples produced using the traditional solid-status approach are discussed in this study. The luminescence measurement of the prepared red phosphor and phosphor-conversion sheet for white light emitting diodes (WLED) were conducted with Mie-scattering Monte Carlo simulation and MATLAB computation. The phosphor demonstrated a broad emission range with the prominent emission peak at~ 601 nm under the 402 nm radiation, originated from the Sm 3+ ion’s 4 G 5/2 and 6 H 7/2 transfer. The use of Ba 2 Ca (BO 3) 2: Sm 3+(abbreviation is BC (BO): Sm) in combination with CaCO 3 nanoparticles and yellow phosphor to form a conversion layer demonstrates the increase in red spectrum band of the generated white light. By varying the concentration of CaCO 3 amount and maintain the BC (BO): Sm concentration constant, the improvement in specific properties of WLED can be accomplished. According to the findings, the phosphor Ba 2 Ca (BO 3) 2: Sm 3+ can be utilized with a near ultraviolet (n-UV) or blue chip for producing quality-enhanced WLEDs