| 書目名稱 | Optically Active Charge Traps and Chemical Defects in Semiconducting Nanocrystals Probed by Pulsed O | | 編輯 | Kipp van Schooten | | 視頻video | http://file.papertrans.cn/703/702735/702735.mp4 | | 概述 | Nominated by the University of Utah, USA, as an outstanding Ph.D. thesis.Lays the groundwork for further use of Electron Spin Echo Envelop Modulation (ESEEM) and opens the possibility of highly precis | | 叢書名稱 | Springer Theses | | 圖書封面 |  | | 描述 | .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. . | | 出版日期 | Book 2013 | | 關(guān)鍵詞 | CdSe/CdS Nanocrystals; Colloidal Nanocrystals; Electron Spin Resonance; Light Harvesting; Optically Acti | | 版次 | 1 | | doi | https://doi.org/10.1007/978-3-319-00590-4 | | isbn_softcover | 978-3-319-03328-0 | | isbn_ebook | 978-3-319-00590-4Series ISSN 2190-5053 Series E-ISSN 2190-5061 | | issn_series | 2190-5053 | | copyright | Springer International Publishing Switzerland 2013 |
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