Optical and Magnetic Resonance Characterization of Donors and Acceptors in Zinc Oxide (DEPSCoR)
Abstract
This is the final report for a three-year project to identify and characterize donors and acceptors in single crystals of ZnO. Samples were obtained from our industrial partner (Eagle-Picher) and from the Air Force Research Laboratory (Hanscom AFB). The experimental techniques used to characterize the crystals were Hall effect, infrared and visible absorption, photoluminescence, thermoluminescence, electron paramagnetic resonance (EPR), and electron-nuclear double resonance (ENDOR). Studies completed during this project include: (1) an investigation of the isolated nitrogen acceptor in ZnO, (2) an investigation of the role of copper in the green luminescence from ZnO, (3) an investigation of molecular nitrogen acceptors in ZnO, (4) the diffusion of lithium acceptors into single crystals of ZnO, (5) the temperature dependence of the free exciton transition energy, (6) the ionization energy of isolated nitrogen acceptors determined from photoluminescence. (7) the observation of deep levels associated with transition-metal ions, (8) the effect of hydrogen annealing on the excitonic region of the photoluminescence spectrum, (9) the demonstration of the role of hydrogen as a charge compensator for singly ionized acceptors (i.e., the Li-OH center), and (10) the production of native donors in ZnO by high-temperature anneals in Zn vapor.
Document Details
- Document Type
- Technical Report
- Publication Date
- Sep 08, 2005
- Accession Number
- ADA438732
Entities
People
- Larry E. Halliburton
- N. C. Giles
Organizations
- West Virginia University