Skip to main content

Toward a Microgravity Research Strategy (1992) / Chapter Skim
Currently Skimming:

Appendix C: Electronic Materials
Pages 31-35

The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.


From page 31...
... Bulk crystals serve as substrates for epitaxial-film deposition and/or CHAPTER 4 growth and in limited applications for the direct processing of devices and APPENDIX A integrated circuits. The major research questions here include contamination and APPENDIX B gettering effects, compositional uniformity, wafer surface flatness and/or defects, APPENDIX C and electrically active, structural micro-defects.
Read the entire page →
From page 32...
... However, the work reported here does contribute to our basic understanding of bulk crystal growth processes, both through theoretical studies of heat and mass transport as well as the experimental study of model systems. The paradigm for these studies is use of the microgravity environment to decouple the interferences of gravitationally driven fluid flows from the effects produced by other forces.
Read the entire page →
From page 33...
... During epitaxial growth, forced convection is used very successfully to improve compositional control, and there is no need to resort to the complex control of bulk melt thermal and solutal parameters; hence, it is unnecessary to use the microgravity environment to study or enhance the crystal growth of these solid solution materials. Vapor Growth Vapor growth of the HgI2,GeSe, and HgCdTe systems has been studied in detail.
Read the entire page →
From page 34...
... There is a weak relationship between the properties of the bulk substrate and the epitaxial film. However, the major research issues relate to control of the atomic layer required in epitaxial film growth.
Read the entire page →
From page 35...
... The microgravity program should emphasize processing science and deemphasize categorization of activities by disciplinary areas, such as microelectronics, for which the contributions must be judged against a far more comprehensive scientific base. Last update 7/13/00 at 1:56 pm Site managed by Anne Simmons, Space Studies Board file:///C|/SSB_old_web/cmgr92appendc.htm (5 of 6)
Read the entire page →

Key Terms

  • crystal growth
  • electronic materials
  • vapor growth
  • space experiments
  • growth experiments

  • microgravity research
  • epitaxial films
  • bulk crystals
  • compositional control
  • gravitational acceleration

  • molten floating
  • epitaxial growth
  • forced convection
  • convection phenomena
  • density gradients

  • microelectronic materials
  • fluid flow
  • solid solution
  • manipulate molten
  • residual fluid

  • epitaxial vapor
  • fabricating microelectronic
  • observe fluid
  • bulk semiconductor
  • bulk melt

  • space studies
  • melt growth
  • growth interface
  • solution materials
  • aqueous solution


    • This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
    More information on Chapter Skim is available.