Pb 1-x Cd x I 2 단결정의 구조적 광학적 특성 연구

송호준; 최성길; 김화택; Ho-Jun Song; Sung-Gill Choi; Wha-Tek Kim

Korean Journal of Materials Research, Vol.12, No.11, 875-879, November, 2002

DOI10.3740/MRSK.2002.12.11.875 Export Citation

Pb 1-x Cd x I 2 단결정의 구조적 광학적 특성 연구

A Study on Structural and Optical Properties of Pb 1-x Cd x I 2 Single Crystals

송호준^†, 최성길¹, 김화택¹

한국기초과학지원연구원 광주분소
¹전남대학교 물리학과

Ho-Jun Song^†, Sung-Gill Choi¹, and Wha-Tek Kim¹

Korea Basic Science Institute Gwangju Branch, Chonnam National University, Gwangju 500-757, Korea
¹Dept. of Physics, Chonnam National University, Gwangju 500-757, Korea

E-mail:

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.

Keywords:lead iodine;cadmium iodine;layered structure;mixed crystal;optical properties

[References]

JAIN PC, TRIGUNAYAT GC, J. Crystal Growth, 48, 107 (1980)
TYAGI UP, TRIGUNAYAT GC, Acta Cryst., C44, 1157 (1988)
Trigunayat GC, Pure App. Phys., 19, 881 (1981)
Roth S, Willig MR, Appl. Phys. Lett., 18, 328 (1971)
Dugan AE, Hennisch HK, J. Phys. Rev., 171, 1047 (1968)
Shooman J, Solid State Commun., 13, 673 (1973)
Minagawa T, Acta Crystallogr. A, 31, 823 (1975)
ADDUCI F, BALDASSARRE L, MAGGIPINTO G, MINAFRA A, LEVY F, Phys. Status Solidi A, 52, K173 (1979)
Ielinger JP, Ohoryles B, J. Appl. Phys., 57(2), 15 (1985)
Khilji MY, Sherman WF, Wilkinson GR, J. Raman Spectroscopy, 13, 127 (1982)
KLEIM R, RAGA F, J. Phys. Chem. Solids, 30, 2213 (1969)
Levy F, Mercier A, Voitchovsky JP, Solid State Commun., 15, 819 (1974)
Skoinick MS, Bimberg D, Phys. Rev. B, 18, 7080 (1978)
Yamazaki S, Goto T, J. Phys. Soc. Jpn., 51(10), 3228 (1982)
Nagamune Y, Takeyama S, Miura N, Minagawa T, Misu A, Appl. Phys. Lett., 50(19), 1337 (1987)
Takeyama S, Watanabe K, Ichihara M, Suzuki K, Miura, J. Appl. Phys., 68(6), 2735 (1990)
Nakagawa H, Yamasa T, Matsumoto H, Hayashi T, J. Phys. Soc. Japan, 56(3), 1185 (1987)
Stout GH, Jensen LH, X-ray Structure Determination A Particle Guide,The Macmillan Commpany, London, p. 386 (1978) (1978)
Pankove JI, Optical Processes in Semiconductors, Dover Pub. Inc., New York, Chap. 3 (1971) (1971)

[1] JAIN PC, TRIGUNAYAT GC, J. Crystal Growth, 48, 107 (1980)

[2] TYAGI UP, TRIGUNAYAT GC, Acta Cryst., C44, 1157 (1988)

[3] Trigunayat GC, Pure App. Phys., 19, 881 (1981)

[4] Roth S, Willig MR, Appl. Phys. Lett., 18, 328 (1971)

[5] Dugan AE, Hennisch HK, J. Phys. Rev., 171, 1047 (1968)

[6] Shooman J, Solid State Commun., 13, 673 (1973)

[7] Minagawa T, Acta Crystallogr. A, 31, 823 (1975)

[8] ADDUCI F, BALDASSARRE L, MAGGIPINTO G, MINAFRA A, LEVY F, Phys. Status Solidi A, 52, K173 (1979)

[9] Ielinger JP, Ohoryles B, J. Appl. Phys., 57(2), 15 (1985)

[10] Khilji MY, Sherman WF, Wilkinson GR, J. Raman Spectroscopy, 13, 127 (1982)

[11] KLEIM R, RAGA F, J. Phys. Chem. Solids, 30, 2213 (1969)

[12] Levy F, Mercier A, Voitchovsky JP, Solid State Commun., 15, 819 (1974)

[13] Skoinick MS, Bimberg D, Phys. Rev. B, 18, 7080 (1978)

[14] Yamazaki S, Goto T, J. Phys. Soc. Jpn., 51(10), 3228 (1982)

[15] Nagamune Y, Takeyama S, Miura N, Minagawa T, Misu A, Appl. Phys. Lett., 50(19), 1337 (1987)

[16] Takeyama S, Watanabe K, Ichihara M, Suzuki K, Miura, J. Appl. Phys., 68(6), 2735 (1990)

[17] Nakagawa H, Yamasa T, Matsumoto H, Hayashi T, J. Phys. Soc. Japan, 56(3), 1185 (1987)

[18] Stout GH, Jensen LH, X-ray Structure Determination A Particle Guide,The Macmillan Commpany, London, p. 386 (1978) (1978)

[19] Pankove JI, Optical Processes in Semiconductors, Dover Pub. Inc., New York, Chap. 3 (1971) (1971)