utep ELD

The Electronic Devices Laboratory (EDL) at The University of Texas at El Paso was established in the Summer of 1990 with a grant from the National Science Foundation. since that time, the grant has been renewed, and EDL has received support from NASA, Advanced Technology Program of the Texas Higher Education Coordinating Board and others.

EDL is directed by Dr. Vijay P. Singh, Professor of Electrical and Computer Engineering. Senior researchers include Dr. John C. McClure, Associate Professor of Metallurgical and Materials Engineering, and Dr. Gregory B. Lush, Assistant Professor of Electrical and Computer Engineering. What began as a group of five graduate students, three undergraduate students and two faculty has grown to over 30 students (including four Ph.D. and nine M.S. students) and 3 faculty.

EDL Currently operates three ongoing projects: Electroluminescent Display Devices (EL), Solar Cell Devices, and High Speed Devices for Novel Computer Architecture. The laboratory facilities are located on the floor of the Engineering Building and in Burgess Hall, on the UTEP campus.

Over the years, EDL has achieved international recognition through its numerous publications and conference presentations and has established itself as one of the most successful laboratories on the UTEP campus. In 1992, EDL hosted the 6th International Workshop on Electroluminescence (EL-92) in El Paso. Since 1990 over 40 papers have been published in archival journals including IEEE Transactions, magazines, and conference proceedings.

Dr. Singh and Dr. McClure have over the years involved engineering students at all levels, even entering freshman. Their metamorphosis in these labs has resulted in their recruitment by major corporations upon graduation. As the largest group on the UTEP campus with undergraduate students (over 20), EDL serves as one of the largest training grounds for our engineering and science students; at any given time, about 15 undergraduate research assistants are employed in the lab. To date, all students trained in this lab have found challenging positions in industry or have gone on to pursue graduate studies. The lab helps the College of Engineering in promoting engineering education by participating in tours for local schools, company representatives and scholarship honorees.

The main goals of The Electronic Devices Laboratory are:

  • To continue to be a recognized leader in thin film optoelectronic device research
  • Produce competitive research oriented graduates
  • Introduce undergraduate students to graduate-level research
  • Give students the opportunity to enhance technical skills through hands-on experience
  • Encourage high school students to pursue careers in engineering

    Electroluminescence Project

    Alternating Current Thin Film Electroluminescent (ACTFEL) displays are the future of display devices. They are rugged, lightweight and portable; have low power consumption, wide view angle, fast response, and unlike the cathode ray tube, do not emit radiation, At UTEP, these devices are fabricated in a vacuum system affectionately named Mariah.

    This vacuum deposition system contains three of the most advanced thin film deposition techniques. Once the devices are completed, they are evaluated by various characterization methods on an endogenously built computer controlled data acquistion system.

    The Electronic Devices Laboratory is working on the development of what will eventually become color television screens less than an inch thick, including the driver circuitry. EDL has shown a tremendous amount of success developing the yellow color. EDL is recognized as a leader in ACTFEL device research and has fabricated among the best "yellow-devices" in the world. Work on the development of the red and blue colored devices is in progress.

    Solar Cells Project

    For many years, single crystal devices served as the basic material for relatively efficient and stable photovoltaic cells. However, the trend in recent years has been to use materials that would provide acceptable performance at reduced cost. The need to produce a low cost solar cell to compete in large scale power production has forced industry to compromise high efficiency devices for those costing much less. Solar modules with efficiencies of 10-16% at reduced cost will be competitive with present single crystal silicon modules.

    At EDL, researchers are investigating different fabrication techniques as well as electrical and materials characterization of thin film solar cells. Thin film cells such as CdTe/CdS can be produced more economically than single crystal cells because relatively little material (e.g. a few microns) is used. Furthermore, the polycrystalline nature of a thin film eliminates expensive crystal growth techniques and allows cost efective production processes.

    High Speed Devices Project

    The processing speed of a computer is determined by its architecture, the speed of its logic devices and interconnect delays, The Electronic Devices Laboratory is collaborating with faculty involved in computer architecture on chip design, layout and packaging considerations for implementing a modularly configured attached processor (MCAP) computer architecture. CMOS and GaAs logic families in multichip module (MCM) and wafer scale integration (WSI) configurations are being evaluated.

    Initial results from this 1 year old project indicate that the entire MCAP can be fabricated with about 10 million transistors on 25 chips; speed in excess of 500MILOPS can be achieved with air cooled, 0.5 micron CMOS logic when these 25 chips are placed in a MCM configuration.

    Some Important EDL Publications

    "A Model for Electroluminescence in SrS:Ce ACTFEL Display Devices". by V.P. Singh and D.C. Morton, IEEE Transactions on Electron Devices, Vol. 39, No. 6, June 1992, pp. 1331-1340.

    "Electron Energy Distribution at the Insulator-Semiconductor Interface in AC Thin Film Electroluminescent Display Devices", A. Aguilera, V.P. Singh, and D.C. Morton, IEEE Transactions on Electron Devices, Vol. 41, No. 8, pp. 1357-1363, August 1994.

    "Characterization of Thin Film CdS/CdTe Solar Cells", by V.P. Singh, H. Brafman and J.C. McClure, Solar Cells, Vol. 31,1991, pp. 23-38.

    "Design Considerations for implementing a Modularly Configurable Attached Processor in a Multichip Module", S.J. Singh, B.W. Bremel, V.P. Singh and G.A. Gibson, Proceedings of IEEE Multichip Module Conference 1995, Santa Cruz, CA, January 1995, pp. 62-68.

    For further information:

    Dr. Vijay P. Singh, Professor
    Director, Electronic Devices Laboratory
    The University of Texas at El Paso
    Department of Electrical & Computer Engineering
    (915) 747-6972
    fax: (915) 747-5516
    e-mail: singh@ee.utep.edu

    For additional information:

    Dr. Scott Starks, Dean
    Colleg of Engineering
    The University of Texas at El Paso
    El Paso, TX 79968