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Overview"Colloidal nanocrystals show much promise as an optoelectronics architecture due to facile control over electronic properties afforded by chemical control of size, shape, and heterostructure. Unfortunately, realizing practical devices has been forestalled by the ubiquitous presence of charge ""trap"" states which compete with band-edge excitons and result in limited device efficiencies. Little is known about the defining characteristics of these traps, making engineered strategies for their removal difficult. This thesis outlines pulsed optically detected magnetic resonance as a powerful spectroscopy of the chemical and electronic nature of these deleterious states. Counterintuitive for such heavy atom materials, some trap species possess very long spin coherence lifetimes (up to 1.6 µs). This quality allows use of the trapped charge's magnetic moment as a local probe of the trap state itself and its local environment. Beyond state characterization, this spectroscopy can demonstrate novel effects in heterostructured nanocrystals, such as spatially-remote readout of spin information and the coherent control of light harvesting yield." Full Product DetailsAuthor: Kipp van SchootenPublisher: Springer International Publishing AG Imprint: Springer International Publishing AG Edition: Softcover reprint of the original 1st ed. 2013 Dimensions: Width: 15.50cm , Height: 0.60cm , Length: 23.50cm Weight: 1.708kg ISBN: 9783319033280ISBN 10: 331903328 Pages: 90 Publication Date: 09 August 2015 Audience: Professional and scholarly , Professional & Vocational Format: Paperback Publisher's Status: Active Availability: Manufactured on demand  We will order this item for you from a manufactured on demand supplier. Table of ContentsIntroduction.- Experimental Methods.- Spin-Dependent Exciton Quenching and Intrinsic Spin Coherence in CDSE/CDS Nanocrystals.- Towards Chemical Fingerprinting of Deep-Level Defect Sites in CDS Nanocrystals by Optically Detected Spin Coherence.- Summary of Work.ReviewsAuthor Information"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." Tab Content 6Author Website:Countries AvailableAll regions |
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