Korean Journal of Materials Research (한국재료학회지)

Materials Research Society of Korea (한국재료학회)
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A Study on Structural and Optical Properties of Pb1-xCdxI2 Single Crystals

Pb1-xCdxI2 단결정의 구조적 광학적 특성 연구

  • Song, Ho-Jun (Korea Basic Science Institute Gwangju Branch, Chonnam National University) ;
  • Choi, Sung-Gill (Dept. of Physics, Chonnam National University) ;
  • Kim, Wha-Tek (Dept. of Physics, Chonnam National University)
  • 송호준 (한국기초과학지원연구원 광주분소) ;
  • 최성길 (전남대학교 물리학과) ;
  • 김화택 (전남대학교 물리학과)
  • Published : 2002.11.01
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Abstract

$Pb_{1-x}$ $Cd_{x}$ $I_2$ (x=0.0, 0.2, 0.5, 0.7, 0.9, 1.0) single crystals were grown by using Bridgman method and their structural and optical properties were investigated from the measurement of X-ray diffraction, optical absorption and photoluminescence. As-grown single crystals have hexagonal closed packed layered structure. The values of lattice constant c decrease with increasing composition x. Direct and indirect transition optical energy band gaps are calculated from optical absorption spectra measured at room temperature. They increase exponentially from 2.3eV to 3.2 eV with increasing composition x. The energies of photoluminescence peak due to donor bound exciton measured at 6K increase with increasing composition . However, the peak energies of donor-acceptor pair (DAP) are independent of the optical energy band gaps of $Pb_{1-x}$/$Cd_{x}$ $I_2$ single crystals.

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References

  1. Prem Chand JAIN and G.C.TRIGUNAYAT, J. Crystal Growth, 48, 107 (1980) https://doi.org/10.1016/0022-0248(80)90199-2
  2. U.P. TYAGI and G.C. TRIGUNAYAT, Acta Cryst., C44, 1157 (1988)
  3. G.C. Trigunayat, Pure App. Phys., 19, 881 (1981)
  4. S. Roth and M.R. Willig, Appl. Phys. Lett., 18, 328 (1971) https://doi.org/10.1063/1.1653682
  5. A.E. Dugan and H.K. Hennisch, J. Phys. Rev., 171, 1047 (1968) https://doi.org/10.1103/PhysRev.171.1047
  6. J. Shooman, Solid State Commun., 13, 673 (1973) https://doi.org/10.1016/0038-1098(73)90456-0
  7. T. Minagawa, Acta Cryst., A31, 823 (1975)
  8. F. ADDUCI, L. BALDASSARRE, G. MAGGIPINTO, A. MINAFRA, and F. LEVY, phys. stat. sol.(a), 52, K173 (1979) https://doi.org/10.1002/pssa.2210520260
  9. J.P. ielinger, B. ohoryles, J. Appl. Phys., 57(2), 15 (1985) https://doi.org/10.1063/1.334803
  10. M.Y. Khilji, W.F. Sherman and G.R. Wilkinson, J. Raman Spectroscopy, 13, 127 (1982) https://doi.org/10.1002/jrs.1250130206
  11. R. KLEIM and F. RAGA, J. Phys. Chem. Solids, 30, 2213 (1969) https://doi.org/10.1016/0022-3697(69)90146-2
  12. F. Levy, A. Mercier and J.P. Voitchovsky, Solid State Commun., 15, 819 (1974) https://doi.org/10.1016/0038-1098(74)90671-1
  13. M.S. Skoinick and D. Bimberg, Phys. Rev. B, 18, 7080 (1978) https://doi.org/10.1103/PhysRevB.18.7080
  14. Satoshi Yamazaki and Takenari Goto, J. Phys. Soc. Jpn., 51(10), 3228 (1982) https://doi.org/10.1143/JPSJ.51.3228
  15. Y. Nagamune, S. Takeyama, N. Miura, T. Minagawa and A. Misu, Appl. Phys. Lett., 50(19), 1337 (1987) https://doi.org/10.1063/1.97899
  16. S.Takeyama, K.Watanabe, M.Ichihara, K.Suzuki, and Miura, J. Appl. Phys., 68(6), 2735 (1990) https://doi.org/10.1063/1.346449
  17. Hideyuki Nakagawa, Takanobu Yamasa, Hiroaki Matsumoto and Tetsusuk Hayashi, J. Phys. Soc. Japan, 56(3), 1185 (1987) https://doi.org/10.1143/JPSJ.56.1185
  18. George H. Stout and Lyle H. Jensen, X-ray Structure Determination A Particle Guide,The Macmillan Commpany, London, p. 386 (1978)
  19. J.I. Pankove, Optical Processes in Semiconductors, Dover Pub. Inc., New York, Chap. 3 (1971)