Concentration dependence of As2S3 chalcogenide glass cluster size in amine solution

Nikita S. Dutta, Craig B. Arnold

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


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.

Original languageEnglish (US)
Pages (from-to)35819-35823
Number of pages5
JournalRSC Advances
Issue number62
StatePublished - 2018

All Science Journal Classification (ASJC) codes

  • General Chemistry
  • General Chemical Engineering


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