Low melting temperature bismuth-doped tin phosphate glass

Data from "Low melting temperature bismuth-doped tin phosphate glass" Abstract: We fabricated Bi-doped tin phosphate glasses using SnO, phosphoric acid, and Bi2O3 at melting temperatures between 550 °C and 1100 °C. In undoped glasses, the Tauc bandgap increases with temperature, attributed to more bridging oxygens in PO4 units. Doping with 0.2 mol% Bi2O3 introduces absorption bands at 360 nm and 540 nm and darkens the glass due to phase separation and SnO/SnO2 crystallite formation. Under green excitation, a broad NIR photoluminescence band centered at 1180 nm with dual lifetime components (~10 µs and ~100 µs) is observed. The 550 °C glass sets a new low-temperature threshold for Bi activation in oxide glasses.本数据集源自《低熔点铋掺杂锡磷酸盐玻璃》一文。 摘要：本研究以一氧化锡（SnO）、磷酸及三氧化二铋（Bi₂O₃）为原料，在550 °C至1100 °C的熔融温度区间内制备了铋掺杂锡磷酸盐玻璃。未掺杂玻璃的塔乌尔带隙（Tauc bandgap）随熔融温度升高而增大，该现象源于磷酸根（PO₄）结构单元内桥连氧原子占比的提升。当掺入0.2 mol%的三氧化二铋后，玻璃在360 nm与540 nm处出现特征吸收带；同时因相分离现象与一氧化锡/二氧化锡（SnO/SnO₂）微晶的生成，玻璃发生黑化。在绿光激发条件下，可观测到中心波长为1180 nm的宽谱近红外（NIR）光致发光带，其荧光寿命呈现双分量特征（约10 μs与100 μs）。该550 °C制备的玻璃样品，为氧化物玻璃中铋离子激活建立了全新的低温阈值。