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Article
Kinetics of Silicon Film Growth and the Deposition Phase Diagram
Journal of Non-Crystalline Solids (2004)
  • G. M. Ferreira, The Pennsylvania State University
  • A. S. Ferlauto, The Pennsylvania State University
  • Chi Chen, The Pennsylvania State University
  • Joshua M. Pearce, The Pennsylvania State University
  • R. J. Koval, The Pennsylvania State University
  • C. Ross
  • C. R. Wronski, The Pennsylvania State University
  • Robert W. Collins, The Pennsylvania State University
Abstract
Three different surface microstructural transitions have been identified versus accumulated bulk layer thickness db during the growth of hydrogenated silicon (Si:H) films by plasma enhanced chemical vapor deposition (PECVD): (i) an amorphous growth regime roughening transition, (ii) an amorphous-to-(mixed-phase amorphous + microcrystalline) roughening transition, and (iii) a (mixed-phase)-to-(single-phase) microcrystalline smoothening transition. These transitions are observed using real time spectroscopic ellipsometry, and the results can be summarized succinctly using deposition phase diagrams wherein the transition thicknesses of interest are plotted versus the H2-dilution ratio R=[H2]/[SiH4]. For Si:H p–i–n solar cells, a greater understanding of processing-property relations and optimization procedures is possible by correlating cell performance with the corresponding phase diagram for the intrinsic (i) layer obtained, using a relevant substrate material. Here we review previous key results, and as an example present a comparison of phase diagrams for Si:H PECVD obtained at two plasma excitation frequencies, 13.56 MHz (rf) and 60 MHz (vhf).
Keywords
  • P130,
  • P115,
  • E280
Disciplines
Publication Date
March 24, 2004
Publisher Statement
© 2004 Elsevier B.V. Abstract included here in compliance with publisher policies. Publisher's version of record: http://dx.doi.org/10.1016/j.jnoncrysol.2004.02.013
Citation Information
G. M. Ferreira, A. S. Ferlauto, Chi Chen, Joshua M. Pearce, et al.. "Kinetics of Silicon Film Growth and the Deposition Phase Diagram" Journal of Non-Crystalline Solids (2004)
Available at: http://works.bepress.com/jmpearce/74/