펄스레이저증착에 의한 투명전도성 산화주석 박막

The transparent and conducting tin oxide thin films by the pulse laser deposition

  • 발행 : 1997.05.01

초록

투명전도성 산화주석 박막이 펄스레이저증착에 의하여 파이렉스유리 기판상에 제조 되었다. 진공, $O_2$, 및 $Sn(CH_3)_4$분위기에서 Nd-YAG레이저 빛살이 다결정 $SnO_2$ 타겟을 융제 하여 실온에서 기판상에 박막을 증착시키고, 증착된 막을 230, 420, 및 $610^{\circ}C$에서 각각 2시 간 동안 공기중에서 열처리하였다. 박막의 특성이 UV-VIS-NIR 분광법과 X-선 회절법에 의하여 조사되고, 전기적 성질이 촉심식법으로 구해진 막의 두께와 함께 사점탐침법에 의하 여 측정되었다. $Sn(CH_3)_4$이 존재할 때 $SnO_2$상들이 실온에서조차 성장되는 것이 관찰되었다. 이는 레이저 융제 동안 발생된 마이크로플라즈마가 전구물질분자의 분해에 중요한 역할을 함을 시사한다.

The transparent conductiong thin films of tin oxides were prepared on pyrex glass substrates by the pulse laser deposition. In the atmospheres of vacuum, O2, and $Sn(CH_3)_4$ a polycrystalline $SnO_2$ target was ablated by Nd-YAG laser beam to deposit thin films on the substrates at room temperature, and as-deposited films were subsequently heat-treated in the air for 2 h at 230, 420 and $610^{\circ}C$, respectively. The characteristics of the thin films were examined by UV-VIS-NIR spectrometry and X-ray diffractometry, and the electrical properties were measured by four-point probe method along with film thickness monitored by the stylus method. It was observed that in the presence of $Sn(CH_3)_4$, $SnO_2$ phases were grown even at room temperature. This suggests that the microplasma producted during the laser ablation plays an important role in the dissociaation of precursor molecules.

키워드

참고문헌

  1. Phys. Stat. Sol. v.A71 Z. M. Jarzebski
  2. Thin Solid Films v.102 K. L. Chopra;S. Major;D. K. Pandya
  3. Prog. Cryst. Growth Charact. v.6 H. Prakash
  4. J. Appl. Phys. v.79 P. Chatterjee
  5. J. Mater. Res. v.5 V. P. Godbole;R. D. Vispute;S. M. Chaudhari;S. M. Kanetkar;S. B. Ogale
  6. Thin Solid Films v.206 R. Lal;R. Grover;R. D. Vispute;R. Viswanathan;V. P. Godbole;S. B. Ogale
  7. J. Appl. Phys. Lett. v.57 C. M. Dai;C. S. Su;D. S. Chuu
  8. Thin Solid Films v.190 G. Sanon;R. Rup;A. Mansingh
  9. 한국과학재단연구보고서(941-0300-033-1) 윤천호
  10. The Materials Science of Thin Films M. Ohring
  11. Powder Diffraction File W. F. McClune
  12. J. Mater. Sci. Lett. v.10 H. Enoki;K. Yamamori;J. Echigoya
  13. Proceedings of 6th European conference on Chemical Vapor Deposition Modeling of Laser CVD H. Esrom;G. Wahl
  14. Thin Solid Film v.218 H. Sankur