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Au-rich filamentary behavior and associated subband gap optical absorption in hyperdoped Si

Yang, Wenjie; Akey, Austin J.; Smillie, Lachlan; Mailoa, Jonathan P.; Johnson, B. C.; McCallum, J. C.; Macdonald, Daniel; Buonassisi, Tonio; Aziz, Michael; Williams, James

Description

Au-hyperdoped Si, synthesized by ion implantation and pulsed laser melting, is known to exhibit a strong sub-band gap photoresponse that scales monotonically with the Au concentration. However, there is thought to be a limit to this behavior since ultrahigh Au concentrations (>1 x 10(20) cm(-3)) are expected to induce cellular breakdown during the rapid resolidification of Si, a process that is associated with significant lateral impurity precipitation. This work shows that the cellular...[Show more]

CollectionsANU Research Publications
Date published: 2017
Type: Journal article
URI: http://hdl.handle.net/1885/232627
Source: Physical Review Materials
DOI: 10.1103/PhysRevMaterials.1.074602
Access Rights: Open Access

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