Optically Active Charge Traps and Chemical Defects in Semiconducting Nanocrystals Probed by Pulsed Optically Detected Magnetic Resonance (eBook)

Kipp van Schooten Department of Physics and Astronomy University of Utah Salt Lake City, UT, 84112 USA Kipp van Schooten received his Ph.D. in Physics (Condensed Matter focus) from the University of Utah in December 2012. He received the Outstanding Teaching Assistant award each year from 2005 - 2009 for the courses "Intro to Quantum Relativity" and "Solid State Physics II." In 2011, he also received first place for Best Graduate Student Oral Presentation at the University of Utah.

Introduction.- Colloidal Nanocrystals.- Pulsed Optically Detected Magnetic Resonance (PODMR).- Experimental Methods.- Experimental Considerations of PODMR.- Time-Resolved Optical Spectroscopy.- Nanocrystal Materials.- Sample Preparation.- Spin-Dependent Exciton Quenching and Intrinsic Spin Coherence In CDSE/CDS Nanocrystals.- Chapter Synopsis.- Introduction.- Spectrally Selected, Optically Detected Magnetic Resonance.- Coherence Measurements and Novel Effects.- Conclusion.- Supporting Information.- Toward Chemical Fingerprinting of Deep-Level Defects Sites in CDs Nanocrystals by Optically Detected Spin Coherence.- Chapter Synopsis.- Introduction.- Photoluminescence Decay Dynamics Indicating Long Trapping Lifetimes.- Experimental Methods.- Optically Detected Magnetic Resonance vs. Emission Channel.- Increased Dipolar Coupling of Shallow Trap States Associated with the Defect.- Probing Coherence and ESEEM with Optically Detected Hahn Echoes.- Conclusion.- Summary of Work.- Work in Context.- Publications to Date.