2026-09-22T06:07:20Z https://www.ideals.illinois.edu/oai-pmh

oai:www.ideals.illinois.edu:2142/92674 2023-07-11 col_2142_5131 com_2142_5130

Rockett, Angus A. Kardel, Justin Tynes 2016-11-10T17:49:14Z 2016-11-10T17:49:14Z 2016-07-27 2016-08 The effect of NaF on the growth of CuInSe2 (CIS) epitaxial thin films by a hybrid sputtering and evaporation method was studied. Low levels of NaF deposition during interruptions of epitaxial growth reduced surface roughness. Larger amounts of NaF resulted in columnar epitaxial films with <112> surface facets on the sides of the columns. X-ray diffraction shows all films to be largely epitaxial, with small amounts of (301)-surface-oriented CIS grains present in films with the highest NaF addition. In the columnar films, a buildup of Na was seen near the substrate/film interface, suggesting that Na is buried during columnar growth. I conclude that the Na plays an integral role in the creation of columns in the films based on the dose of Na added during growth. A mechanism for the transition to growth of columns with critical concentrations of NaF is proposed. Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2016-11-09 without embargo terms The student, Justin Kardel, accepted the attached license on 2016-07-25 at 19:40. The student, Justin Kardel, submitted this Thesis for approval on 2016-07-25 at 19:40. This Thesis was approved for publication on 2016-07-27 at 09:43. DSpace SAF Submission Ingestion Package generated from Vireo submission #10054 on 2016-11-09 at 10:26:02 Made available in DSpace on 2016-11-10T17:49:14Z (GMT). No. of bitstreams: 2 KARDEL-THESIS-2016.pdf: 12289235 bytes, checksum: 3a08542b44f1ab6c0eed16f6a8c852c0 (MD5) LICENSE.txt: 4210 bytes, checksum: 43b1d1e72bf023475868136c322814bf (MD5) Previous issue date: 2016-07-27 application/pdf http://hdl.handle.net/2142/92674 en Copyright 2016 Justin Kardel CuInSe2 (CIS) Copper indium gallium diselinide (CIGS) Thin Films Epitaxy Nanostructures Nanowires Growth of epitaxial nanoscale columnar copper indium diselinide thin films by introduction of sodium flouride during growth text text Materials Science & Engineerng Materials Science & Engr University of Illinois at Urbana-Champaign Thesis M.S.