The effect of short chain thiol ligand additives on chemical bath deposition of lead sulphide thin films: the unique behaviour of 1, 2-ethanedithiol. Issue 47 (18th November 2016)

• Record Type: Journal Article
• Authors: Sengupta, Sucheta; Loutaty, Rachel; Petel, Keren; Levin, Efrat; Lemcoff, N. Gabriel; Golan, Yuval
• Is Part Of: CrystEngComm. Volume 18:Issue 47(2016)
• Page Start: 9122
• Page End: 9129
• Publication Date: 2016-11-18
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c6ce01950a
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : The effects of four common water soluble thiol molecules on the chemical bath deposition of PbS were comparatively studied. The effect of 1, 2-ethanedithiol was shown to be markedly different, resulting in significantly increased film thickness. Abstract : Chemical bath deposition is an effective method for depositing semiconductor thin films with a wide range of compositions and microstructures. While it is widely accepted that organic additive molecules can play a very important role in chemical bath deposition, their role has not been systematically studied. In the present work, we have comparatively studied the effect of four common water-soluble molecules, 1, 2-ethanedithiol, mercaptopropionic acid, cysteamine and mercaptoethanol, on the chemical bath deposition of lead sulfide. The effect of 1, 2-ethanedithiol was shown to be markedly different, resulting in a significantly increased film thickness. We show the effect of each additive on the growth rate, microstructure and optical properties, and provide insights on their mechanism of operation.