High-quality crystalline silicon layer grown by liquid phase epitaxy method at low growth temperature

Toru Ujihara, Kazuo Obara, Noritaka Usami, Kozo Fujiwara, Gen Sazaki, Toetsu Shishido, Kazuo Nakajima

Research output: Contribution to journalLetterpeer-review

6 Citations (Scopus)

Abstract

We investigated the effect of growth temperature on crystal quality of crystalline silicon layers grown by liquid phase epitaxy (LPE) with gold-bismuth binary alloy solvent. The electrical and structural properties were examined by means of minority-carrier lifetime measurement and micro-Raman scattering spectroscopy. Both electrical and structural qualities improve with decreasing growth temperature. In the present study, the lifetime of the silicon layer grown at the lowest temperature was higher than that of monocrystalline silicon substrate through the solvent includes gold which is a well-known strong recombination site. On the other hand, the structural quality of layers is inferior to that of the substrate even at the lowest growth temperature. Thus, the temperature dependence of lifetime was concluded to be mainly due to the reduction of the solubility of gold impurity in the layer rather than the improvement of structural quality.

Original languageEnglish
Pages (from-to)L217-L219
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume42
Issue number3 A
DOIs
Publication statusPublished - 2003 Mar 1

Keywords

  • LPE
  • Lifetime
  • Raman spectroscopy
  • Silicon thin film
  • Solar cell

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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