Brandon Passmore

 

Contact Information:

Brandon Passmore
Bell Engineering-Room 3146
Fayetteville, AR. 72701
Email: bpassmo@uark.edu

 

 

 

 

Education:

ARKANSAS STATE UNIVERSITY
Bachelor’s of Science in Engineering/Electrical Engineering
Graduated - August 2003

UNIVERSITY OF ARKANSAS
Master’s of Science in Microelectronics and Photonics
Graduated - May 2005

UNIVERSITY OF ARKANSAS
Doctor of Philosophy in Microelectronics and Photonics
Expected Graduation - May 2008

 

Experience:

Fall 2001 – Spring 2003: Teaching Assistant for Electric Circuits I & II: Arkansas State University, Jonesboro , AR.

Fall 2004 – Present: NSF GK-12 Fellow: University of Arkansas , Fayetteville , AR.

Fall 2003 – Present: Research Assistant: University of Arkansas, Fayetteville, AR.

 

Current Research:

Quantum dot infrared photodetectors (QDIPs) have assumed an important role in mid-wavelength and long-wavelength detection applications because they offer normal incidence, high-temperature and multi-spectral operation. These interesting features are due to the three-dimensional confinement of the quantum dots which are highly desirable for advanced sensing, imaging systems, temperature registration, chemical analysis and target discrimination. The detection wavelength is based on intersubband transitions within the quantum dots. Using wave mechanic engineering, GaAs based QDIPs have the potential to be designed for detection wavelengths ranging between 1 and 20 m m which operate at room temperature.

Current research efforts include the theoretical design, growth, fabrication and characterization of various QDIP structures. The size and shape of the quantum dots are optimized to allow for high quality and uniformity using atomic force microscopy (AFM) and photoluminescence (PL) techniques. In addition, focal plane array (FPA) QDIPs are fabricated and packaged in a class 100 processing facility. The doping profiles are evaluated using electrochemical capacitance voltage (ECV) and the absorption and photoresponse are measured using a Fourier-transform spectrometer.

 

Goals:

His current research plans involve designing and processing a multi-color 256 x 256 FPA QDIP for mid and long-wavelength detection operating at room temperature. His other interests other than research and academics include playing sports and anything involving the outdoors.

Recent Publications:

• E.A. DeCuir, Jr., Emil Fred, B.S. Passmore, A. Muddasani, and M.O. Manasreh., Near-infrared wavelength intersubband transitions in GaN/AlN short period superlattices., Appl. Phys. Lett , (2006). Accepted for Publication.

• B. S. Passmore, Y. C. Chua, M. O. Manasreh, and J. W. Tomm, “ Longitudinal Modes in InAlGaAs/GaAs High-Power Laser Diodes”, Materials Research Society, Vol. 829, pp B2.8.1 – B2.8.6 (2005).

• E.A. DeCuir, Jr. , Y.C. Chua, B.S. Passmore, J. Liang,, M.O. Manasreh, J. Xie, H. Morkoc, A. Asghar, I.T. Ferguson , and A. Payne, Mater. Res. Soc. Symp. Proc. Vol. 829 , B2.29 (2005).

• J. W. Tomm, M. L. Biermann, B.S. Passmore, M.O. Manasreh, A. Gerhardt, and T. Q. Tien, “ Spectroscopic analysis of external stresses in semiconductor quantum-well materials”, Materials Research Society, Vol. 829, pp B4.4.1 – B4.4.10 (2005).

• Y.C. Chua, Jie Liang, B.S. Passmore, E. A. Decuir, M.O. Manasreh, Zhiming Wang, and G.J. Salamo, “Tuning In 0.3Ga 0.7As/GaAs Multiple Quantum Dots for Long-wavelength infrared detectors”, Appl. Phys. Lett. 89, pp. 1003-1005 (2004).