Lead sulfide (PbS) is an important binary IV – VI semiconductor material with a narrow direct optical energy gap (0.41 eV at 300 K) and relatively large Bohr excitation...

2013年10月5日 · In the X-ray diffraction (XRD) patterns of as-prepared PbS-1, PbS-2, PbS-3, and PbS-4 films (Fig. 1), we observe reflections from only cubic (space group Fm 3 ¯ m) lead sulfide. The XRD patterns of a PbS-1 films obtained by an in situ exposure at different temperatures up to 423 K are presented in Fig. 2 .

2015年8月1日 · The structure and phase of the PbS nanoparticles were characterized by X-ray diffraction (XRD). XRD studies reveal that as-synthesized PbS nanoparticles are in single phase cubic structure and the grain size have been calculated 10–15 nm from XRD results.

2022年1月1日 · The growth of PbS film occurs either by ion-by-ion condensation of Pb 2+ and S 2− ions on the substrate surface or by the adsorption of colloidal particles of PbS. The XRD spectrum of the room temperature to higher temperature reveals the cubic phase.

Powder X-ray diffraction patterns (p-XRD) of the PbS nanoparticles are indexed to face-centered cubic phase of PbS.

2023年7月4日 · UV–Vis spectroscopy, X-ray diffraction (XRD), TEM, FTIR, and photoluminescence measurement were used to examine the optic, structural, as well as morphological features of PbS nanoparticles. According to XRD patterns, the synthesized PbS NPs exhibit a nanocrystalline and cubic (FCC) structure.

通过 X 射线衍射 (XRD)、带 EDX 的扫描电子显微镜 SEM 和热重分析法对合成的纳米颗粒 PbS 进行分析和确认。 使用 XRD、UV-Vis、拉曼、带有 EDX 的 SEM、原子力显微镜 AFM 和霍尔效应测量来研究沉积膜的结构、光学、形态和电学特性。 使用厚度轮廓仪测量沉积样品的厚度。 随着沉积的硫化铅的衬底温度升高，峰的拉曼位移向更低的能量发生。 使用 5 ns 激光脉冲在沉积薄膜上在 532 nm 处进行开孔 Z 扫描研究，这表明非线性吸收是由可饱和吸收过程引起的。 沉积 …

2016年6月2日 · The X-ray diffraction (XRD) patterns of as-deposited PbS and PbSe thin films are shown in Fig. 2. The broad peaks are related to the small crystallites due to nanostructure. The XRD PbS pattern shows some peaks which were indexed to be of cubic rock salt structure according to JCPDS card No. 05-0592.

细菌 PbS 的 X 射线衍射（XRD）图显示出清晰的衍射峰。 多晶PbS各晶面衍射角的实验数据与理论数据吻合良好。 同步加速器 XRD 测量显示没有结晶杂质衍生的峰。 因此，细菌生物矿化可以形成超细结晶 PbS 纳米颗粒。 获得 PbS 的光吸收和电流-电压测量来表征半导体特性；结果显示了半导体量子点的行为。 此外，当使用 PbS 纳米粒子时，在光照射下电流增加。 这些结果表明生物 PbS 具有带隙并表现出半导体的一般基本特征。 Heavy metals in a polluted environment are …

将PBS（室温下pH 7.5）或与海藻糖（5％w / v）或甘露醇（1％w / v）一起冷冻，并用低温差示扫描量热法（DSC），X射线衍射法（XRD）表征）和pH测量。冷冻干燥的冻干物通过XRD表征。