To gain insight into the applicability as building blocks for optoelectronic device development, alkaline earth metal sulfides are investigated. MgS, CaS, SrS, and BaS have been systematically synthesized as colloidal particles in olelyamine. The particle sizes range from around 819 nm for MgS to 12.8 nm for CaS, 25.0 nm for SrS, and 21.6 nm for BaS. The heat-up synthesis uses commerically available precursors without complicated procedures. The structural and optical properties are investigated with X-ray diffraction, spectroscopic ellipsometry, UV–vis spectrophotometry, scanning electron microscopy, and energy dispersive X-ray spectroscopy.

中文翻译：

---

用于溶液处理太阳能电池接触层的碱土金属硫化物的胶体纳米晶体合成

为了深入了解作为光电器件开发构建模块的适用性，对碱土金属硫化物进行了研究。MgS、CaS、SrS 和 BaS 已在油胺中以胶体颗粒形式系统合成。颗粒尺寸范围为 MgS 的 819 nm 左右、CaS 的 12.8 nm、SrS 的 25.0 nm 和 BaS 的 21.6 nm。加热合成使用市售前体，无需复杂的程序。通过 X 射线衍射、光谱椭圆光度法、紫外可见分光光度法、扫描电子显微镜和能量色散 X 射线光谱法研究了结构和光学性质。