Journal of Advanced Marine Engineering and Technology

The Korean Society of Marine Engineering (한국마린엔지니어링학회)
권호 표지
DOI QR코드

DOI QR Code

Fabrication and Characteristics of Blue-Green and Green LEDs using ZnSSe:Te Active Layers

  • Lee, Hong-Chan (Faculty of Energy & Resources Engineering, Jungwon University)
  • Received : 2010.11.16
  • Accepted : 2010.11.26
  • Published : 2010.11.30
Download PDF
⟨ Previous Next ⟩

Abstract

Blue-green and green LEDs have been successfully fabricated grown by MBE, which has introduced the $ZnS_ySe_{1-x-y}:Te_x$ (x=0.04, y~0.11-0.14) ternary epilayer as an active layer. From the I-V characteristics, the built-in voltage (~2.1 V) is very small compared to other wide bandgap LEDs, such as commercial InGaN-based LEDs (>3.2 V). From the C-V profiling, the effective carrier concentration in the p-type ZnMgSSe cladding layer was evaluated as ${\sim}2.8{\times}10^{16}\;cm^{-3}$ for the present LEDs.

Keywords

References

  1. D.B. Eason, Z. Yu, W.C. Hughes, and W.H. Roland, "Molecular‐beam epitaxy of high‐quality ZnSe homo‐epitaxial layers", Appl. Phys. Lett., 66, p.115, 1995. https://doi.org/10.1063/1.113534
  2. Z. Yu, D.B. Eason, C. Boney, and J. Ren, "High-brightness II-VI lightemitting diodes grown by molecular beam epitaxy", J. Vac. Sci. Technol., B 13, p.711, 1995. https://doi.org/10.1116/1.588143
  3. T. Yao. M. Kato, J.J. Davies, and H. Tanino, "Photoluminescence of Exciton Bound t Te Isoelectronic Traps in ZnSe", J. Cryst. Growth, 86, p.552, 1988. https://doi.org/10.1016/0022-0248(90)90774-F
  4. C.D. Lee, H.L. Park, C.H. Chung, and S.K. Chang, "Free-exciton Luminescence from $ZnSe_{1-x}Te_x$", Phys. Rev. B, 45 p.4491, 1992. https://doi.org/10.1103/PhysRevB.45.4491
  5. C.S. Yang, D.Y. Hong, C.Y. Lin, W.C. Chou, C.S. Ro, and S.L. Tu, "Optical Properties of the $ZnSe_{1-x}Te_x$ Epilayers Grown by Molecular Beam Epitaxy", J. Appl. Phys., 83, p.2555, 1988.
  6. H.C. Lee, T. Abe, N. Kaneko, M. Adachi, M. Watanabe, H. Kasada and K. Ando,"Efficient and Long-lived Green Light-Emitting Diodes Based on ZnSSe:Te Active Layer", Japanese Journal of Applied Physics, vol. 41, p.1359, 2002. https://doi.org/10.1143/JJAP.41.1359
  7. T. Abe, H. Ishikura, Y. Saomoto, K. Goto, K. Masuda, T. Shirai, H. Yamada, S. Kuroda, H. Kasada and K. Ando, "Optimization of ZnSe/ZnTe Superlattice Structured p-contact for ZnSe-based Optical Devices", Proceed. of 9th Inter. Conf. on II-VI compounds, Tu-p.053, 1999.
  8. S. Nakamura, S. Pearto, and G. Fasol, "The blue laser diodes" Springer, p.97, 2000.