Solution processing chalcogenide glasses is a common and effective first step in optoelectronic device fabrication. Arsenic(III) sulfide (As₂S₃) is believed to take on a nanoscale cluster structure in n-propylamine and n-butylamine, which affects the morphology and properties of the deposited material; however, the size of these clusters and the mechanism of size determination are poorly understood. We combine experimental and analytical techniques to investigate As₂S₃ cluster size in n-propylamine and its dependence on solution concentration. We find that the cluster size increases with concentration and show that this trend is consistent across independent experimental techniques. We then explain these results by proposing a simplified dissolution mechanism and deriving cluster size through a free energy argument. Our findings enable informed control of chalcogenide glass cluster size during solution processing and improved property control in optoelectronic device fabrication.

中文翻译：

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胺溶液中 As2S3 硫属化物玻璃簇尺寸的浓度依赖性

溶液处理硫属化物玻璃是光电器件制造中常见且有效的第一步。砷（III）硫化物（As ₂ S ₃）被认为在正丙胺和正丁胺中呈现纳米级簇结构，影响沉积材料的形态和性能；然而，人们对这些集群的大小和大小确定的机制知之甚少。我们结合实验和分析技术来研究n中的 As ₂ S ₃簇大小-丙胺及其对溶液浓度的依赖性。我们发现集群大小随着浓度的增加而增加，并表明这种趋势在独立的实验技术中是一致的。然后，我们通过提出简化的溶解机制并通过自由能参数推导簇大小来解释这些结果。我们的研究结果能够在溶液处理过程中对硫属化物玻璃簇的尺寸进行知情控制，并改进光电器件制造中的性能控制。