Single crystals of 0.01 and 0.02 mol% crystal violet dye doped triglycine sulfate (NH2CH2COOH)3·H2SO4 (TGS) have been grown by a slow evaporation technique. Enhanced dielectric, optical, thermal and mechanical properties have been achieved by dye doping. Monoclinic structures showing particular coloring patterns and morphology change with dye concentration were obtained. Various functional groups and dye incorporation in the grown crystals were confirmed qualitatively by FTIR and Raman analysis. A significant increase in Curie temperature from 50 to 55 °C with a decrease in maximum permittivity has been observed. The UV-vis spectra showed an increased transmittance window and an increased optical band gap from 5.61 to 6.11 eV as a result of doping. An increase in the sharpness and intensity of the photoluminescence peak with a blue shift has been observed in doped crystals. The thermal stability and the decomposition temperature were found to increase by about 10 °C in 0.01 mol% dye doped TGS. The mechanical strength of the grown crystals was estimated by the Vickers microhardness test and was found to be high for dye doped TGS. A high piezoelectric charge coefficient d33 of 16 pC N−1 was observed for pure TGS which decreased as a result of the dye effect. The fabrication of a patch antenna was carried out after simulating its resonant frequency, making it suitable for telecommunication applications.
通过缓慢蒸发技术,生长了0.01和0.02摩尔%
结晶紫染料掺杂的三
甘氨酸硫酸盐(NH2CH2COOH)3·H2SO4(TGS)的单晶。通过
染料掺杂,获得了增强的介电、光学、热学和机械性能。获得了单斜晶体结构,其具有特殊的着色图案,并且随着
染料浓度的变化而改变形态。通过FTIR和拉曼分析,定性地确认了生长晶体中的各种官能团和
染料掺杂。观察到居里温度从50℃显著增加到55℃,最大介电常数降低。紫外可见光谱显示,掺杂后,透射窗口增加,光学带隙从5.61eV增加到6.11eV。在掺杂晶体中,观察到光致发光峰的尖锐度和强度增加,并发生蓝移。在0.01摩尔%
染料掺杂的TGS中,热稳定性和分解温度提高了约10℃。通过维氏显微硬度测试,估计了生长晶体的机械强度,发现
染料掺杂的TGS的机械强度很高。在纯TGS中,观察到16pC N-1的高压电电荷系数d33,由于
染料效应,该系数降低。在模拟了贴片天线的共振频率后,进行了贴片天线的制造,使其适用于电信应用。