Rare metal Terbium (Tb) doped SnO₂ (SnO₂:Tb) films were fabricated via spray pyrolyzed method with different doping concentrations. The effects of terbium doping concentration on its microstructural, optical, photoluminescence, and room temperature ammonia vapor sensing properties were reported. The crystallite size of the prepared Tb-doped tin oxide films decreases with an increase in doping concentrations. The obtained crystallite size ranges from ~12 – 9 nm. The terbium incorporation was confirmed by EDS and elemental mapping. The bandgap values are enhanced as the concentration of Tb doping increases. The high gas response of 79% with fast response/recovery of 31/11 s, respectively is reported for 25 ppm of ammonia at room temperature for 5% Tb doped sample. The gas sensing cycle test shows the excellent sensitive behavior of the films without any decrease upon 5 repeated cycles. The stability of the sample was also checked for a corresponding Tb 5% doped sample, which revealed a stable response even for 50 days.

通过喷雾热解法制备了掺杂浓度不同的稀有金属Ter（Tb）的SnO ₂（SnO ₂：Tb）薄膜。据报道of掺杂浓度对其微观结构，光学，光致发光和室温氨蒸气感测特性的影响。所制备的掺the的氧化锡薄膜的微晶尺寸随掺杂浓度的增加而减小。所获得的微晶尺寸范围为〜12 – 9 nm。E的掺入通过EDS和元素图谱确定。随着Tb掺杂浓度的增加，带隙值增加。79％的高气体响应和31/11 s的快速响应/恢复对于5％Tb掺杂的样品，在室温下分别报道了25 ppm的氨。气敏循环测试表明，薄膜具有出色的灵敏性能，在5个重复循环中均未降低。还检查了样品的稳定性，以寻找相应的Tb 5％掺杂样品，即使在50天后仍显示出稳定的响应。