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Electrical properties of Schottky diodes based on Carbazole

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Abstract

Sandwich structures of Carbazole thin films have been prepared by using vacuum deposition technique. The plot of current density versus voltage (J–V characteristics) shows two distinct regions. In the lower voltage region ohmic conduction and in the higher voltage region space charge limited conduction (SCLC) is observed. Number of states in the valence band (Nv) is calculated from the temperature dependence of J in the ohmic region. From the temperature dependence of J in the SCLC region trap density (Nt) and activation energy are determined. The values of Nv and Nt are in the order 1023 m−3 and 1027 m−3 respectively. The value of activation energy is nearly equal to 0.1 eV and that of the effective mobility is 4.5 × 10−7 cm2 V−1 S−1. Schottky diodes are fabricated using Aluminium (Al) as Schottky contact. It is observed that gold (Au) is more suitable for ohmic contact compared to silver (Ag). From a semi logarithmic plot of J versus V, the barrier height (ϕb), diode ideality factor (n) and saturation current density (J0) are determined. The value of n increases and ϕb decreases on annealing.

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References

  1. J. SWORAKOWSKI and J. ULANSKI, Annu. Rep. Prog. Chem Sect. C 99 (2003) 87.

    Article  CAS  Google Scholar 

  2. G. WANG, C. YAN, H. WU and Y. WEI, J. Appl.Phys. 78 (1995) 2679.

    Article  CAS  Google Scholar 

  3. B. HU, Z. YANG and F. E. KRASZ, ibid. 76 (1994) 2419.

    Article  CAS  Google Scholar 

  4. C. ZHANG, H. VON. SEGGEM, K. PAKBAZ, B. KRAABEL, H. W. SCHIMIDT and H. J. HEEGER, Synth. Met. 62 (1994) 35.

    Article  CAS  Google Scholar 

  5. K. D. ALMEIDA, J. C. BERNEDE, S. MARSILLAC, A. GODOY and F. R. DIAZ, Synth. Met. 122 (2001) 127.

    Article  Google Scholar 

  6. J. LIU, R. GUO and Y. YANG, J. Appl. Phys. 91 (2002) 1595.

    Article  CAS  Google Scholar 

  7. L. I. MAISSEL and R. GLANG, “Hand Book of Thin Film Technology” (Mc Graw Hill, New York, 1983) pp. 11.

    Google Scholar 

  8. M. A. LAMPET, Rep. Phys. 27 (1964) 329.

    Article  Google Scholar 

  9. E. GAUTIER-THIANCHE, C. SENTEIN, A. LORIN, C. DENIS, P. RAIMOND and J.-M. NUNZI, J. Appl. Phys. 83 (1998) 4236.

    Article  CAS  Google Scholar 

  10. R. CLERGERAUX, I. SEGUY, P. JOLINAT, J. FARENC and P. DESTRUEL, J. Phys. D. Appl. Phys. 33 (2000) 1947.

    Article  Google Scholar 

  11. K. N. NARAYANAN UNNI and C. S. MENON, Indian Journal of Pure and Applied Physics. 39(2001) 156.

    Google Scholar 

  12. V. N. SAVVATEEV, M. TARABIA, H. CHAYET, E. Z. FARRAGI, G. B. CHOHEN, S. KRISTEIN, D. DAVIDO, Y. AVNY, and R. NEUMANN, Synth. Met. 85 (1997) 1269.

    Article  CAS  Google Scholar 

  13. S. M. SZE, “Physics of Semiconductor Devices” (Eastern Wiley, New Delhi, 1981) pp 637.

    Google Scholar 

  14. N. BOWDEN, S. BRITTAIN, A. G. EVAS, J. W. HUTCHINSON and G. M. WHITESIDES, Nature 93 (1998) 146.

    Google Scholar 

  15. J. KIM and H. H. LEE, J. Polym.Sci. Part-B: Polym. Phys. 39 (2001) 1122.

    Article  CAS  Google Scholar 

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Authors and Affiliations

  1. School of Pure and Applied Physics, Mahatma Gandhi University, Priyadarshini Hills, Kottayam (Dits), 686 560, Kerala

    Sreejith K. Pisharady, C. S. Menon & C. Sudarshanakumar

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  1. Sreejith K. Pisharady
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  2. C. S. Menon
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  3. C. Sudarshanakumar
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Correspondence to Sreejith K. Pisharady.

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Pisharady, S.K., Menon, C.S. & Sudarshanakumar, C. Electrical properties of Schottky diodes based on Carbazole. J Mater Sci 41, 2417–2421 (2006). https://doi.org/10.1007/s10853-006-5078-1

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  • DOI: https://doi.org/10.1007/s10853-006-5078-1

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