View Item 
      •   Home
      • 1. Schools
      • College of Science
      • School of Physical and Mathematical Sciences (SPMS)
      • SPMS Journal Articles
      • View Item
      •   Home
      • 1. Schools
      • College of Science
      • School of Physical and Mathematical Sciences (SPMS)
      • SPMS Journal Articles
      • View Item
      JavaScript is disabled for your browser. Some features of this site may not work without it.
      Subject Lookup

      Browse

      All of DR-NTUCommunities & CollectionsTitlesAuthorsBy DateSubjectsThis CollectionTitlesAuthorsBy DateSubjects

      My Account

      Login

      Statistics

      Most Popular ItemsStatistics by Country/RegionMost Popular Authors

      About DR-NTU

      Transcending the slow bimolecular recombination in lead-halide perovskites for electroluminescence

      Thumbnail
      Transcending the Slow Bimolecular Recombination in Lead-halide Perovskites for Electroluminescence.pdf (938.4Kb)
      Author
      Xing, Guichuan
      Wu, Bo
      Wu, Xiangyang
      Li, Mingjie
      Du, Bin
      Wei, Qi
      Guo, Jia
      Yeow, Edwin K. L.
      Sum, Tze Chien
      Huang, Wei
      Date of Issue
      2017
      School
      School of Physical and Mathematical Sciences
      Version
      Published version
      Abstract
      The slow bimolecular recombination that drives three-dimensional lead-halide perovskites’ outstanding photovoltaic performance is conversely a fundamental limitation for electroluminescence. Under electroluminescence working conditions with typical charge densities lower than 1015 cm−3, defect-states trapping in three-dimensional perovskites competes effectively with the bimolecular radiative recombination. Herein, we overcome this limitation using van-der-Waals-coupled Ruddlesden-Popper perovskite multi-quantum-wells. Injected charge carriers are rapidly localized from adjacent thin few layer (n≤4) multi-quantum-wells to the thick (n≥5) multi-quantum-wells with extremely high efficiency (over 85%) through quantum coupling. Light emission originates from excitonic recombination in the thick multi-quantum-wells at much higher decay rate and efficiency than bimolecular recombination in three-dimensional perovskites. These multi-quantum-wells retain the simple solution processability and high charge carrier mobility of two-dimensional lead-halide perovskites. Importantly, these Ruddlesden-Popper perovskites offer new functionalities unavailable in single phase constituents, permitting the transcendence of the slow bimolecular recombination bottleneck in lead-halide perovskites for efficient electroluminescence.
      Subject
      Materials for Devices
      Optical Physics
      Type
      Journal Article
      Series/Journal Title
      Nature Communications
      Rights
      © 2017 The Author(s). This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
      Collections
      • SPMS Journal Articles
      http://dx.doi.org/10.1038/ncomms14558
      Get published version (via Digital Object Identifier)

      Show full item record


      NTU Library, Nanyang Avenue, Singapore 639798 © 2011 Nanyang Technological University. All rights reserved.
      DSpace software copyright © 2002-2015  DuraSpace
      Contact Us | Send Feedback
      Share |    
      Theme by 
      Atmire NV
       

       


      NTU Library, Nanyang Avenue, Singapore 639798 © 2011 Nanyang Technological University. All rights reserved.
      DSpace software copyright © 2002-2015  DuraSpace
      Contact Us | Send Feedback
      Share |    
      Theme by 
      Atmire NV
       

       

      DCSIMG