FOCUS 

Since bulk semiconductors have been extensively studied and used for electronic devices, most of the new properties and applications come from man-made structures; that is, superlattices, quantum wells (two-dimensional), quantum wires (one-dimensional), and quantum dots (zero-dimensional). We are interested in the fabrication of low-dimensional semiconductor structures and their electrical and optical properties. We are also studying semiconductor/polymer hybrid structures (i.e., flexible semiconductors), which combine the superior quality of single-crystal structures and the flexibility of polymer materials. Our goal is to understand the fundamental properties of such structures and their application potential.

SELECTED PROJECTS

• Fabrication and characterization of self-assembled quantum dots and wires
• Type-II semiconductor heterostructures: fundamental properties and device applications
  
• Fabrication of semiconductor lasers
  
• Monolayer structure during migration-enhanced epitaxy
• Flexible semiconductor/polymer hybrid structures

PUBLICATIONS

• G. Kioseoglou, J. Haetty, H. C. Chang, H. Luo, A. Petrou, T. Schmiedel, and A. Hawrylak. Magnetoluminescence study of n-type modulation doped ZnSe/ZnCdSe quantum well structures. Phys. Rev. B 55:4638 (1997).
• H. Luo and A. Petrou. Optical properties and optoelectronic applications of II-VI semiconductor heterostructures. Chapter 2, Handbook of Photonics, Gupta ed. (CRC Press LLC, 1997) p. 24.
• J. Haetty, M. H. Na, H. C. Chang, H. Luo, and A. Petrou. Fabrication of flexible monocrystalline ZnSe-based foils and membranes. Appl. Phys. Lett. 69:1608 (1996).
• Z. C. Huang, C. R. Wie, I. Na, H. Luo, D. B. Mott, and P. K. Shu. High-performance ZnSe photoconductors. Electronics Letters 32:1507 (1996).
• Q. Shen, H. Luo, and J. K. Furdyna. Spatial dependence of exchange interaction in Heisenberg antiferromagnet Zn_1-xMn_xTe. Phys. Rev. Lett. 75:2590 (1995).

Fig. 1 One of the modes in a newly proposed equilateral triangular laser cavity.