Challenges and solutions for high-efficiency quantum dot-based LEDs

Colloidal quantum dots (QDs) hold great promise as electrically excited emitters in light-emitting diodes (LEDs) for solid-state lighting and display applications, as highlighted recently by the demonstration of a red-emitting QD-LED with efficiency on par with that of commercialized organic LED technologies. In the past five years, important advances have been made in the synthesis of QD materials, the understanding of QD physics, and the integration of QDs into solid-state devices. Insights from this progress can be leveraged to develop a set of guidelines to direct QD-LED innovation. This article reviews the fundamental causes of inefficiency in QD-LEDs understood to date and proposes potential solutions. In particular, we emphasize the challenge in developing QD emitters that exhibit high luminescent quantum yields in the combined presence of charge carriers and electric fields that appear during traditional LED operation. To address this challenge, we suggest possible QD chemistries and active layer designs as well as novel device architectures and modes of QD-LED operation. These recommendations serve as examples of the type of innovations needed to drive development and commercialization of high-performance QD-LED

Students in Transition: The Library Of Congress Classification System as Initiation

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2004-2005 Drake Memorial Library Annual Report

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Alma Link Resolver Subject Report 2015-2016

Statistics for 2015-2016 on the number of OpenURL requests by Library of Congress classification code made to the Ex Libris Alma link resolver for items held by the University of Rhode Island Libraries. Information provided includes Classification Code, Classifications, Number of Requests, Number of Clicked Requests, and % Clicks from Requests

Alma Link Resolver Subject Report 2016-2017

Statistics for 2016-2017 on the number of OpenURL requests by Library of Congress classification code made to the Ex Libris Alma link resolver for items held by the University of Rhode Island Libraries. Information provided includes Classification Code, Classifications, Number of Requests, Number of Clicked Requests, and % Clicks from Requests

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Statistics for 2018-2019 on the number of OpenURL requests by Library of Congress classification code made to the Ex Libris Alma link resolver for items held by the University of Rhode Island Libraries. Information provided includes Classification Code, Classifications, Number of Requests, Number of Clicked Requests, and % Clicks from Requests