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. 2016 Nov 9;6:36733. doi: 10.1038/srep36733

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Copyright © 2016, 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/

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(a) The device structure for the Pe-LED device and the corresponding schematic energy level diagram for the materials. (b) EL spectra for Pe-LED device with B3PYMPM (green line) and TPBi (blue line) as ETL are shown in Fig. 4 recorded at 0.5 mA/cm². The PL spectrum of FAPbBr₃ (red line is also shown for reference). (c) Current density/Luminance vs Voltage (J-V-L) characteristics for Pe-LED device with B3PYMPM (green line circles) and TPBi (blue line stars). (d) Luminous efficiency (cd/A) vs luminance (cd/m²) and Luminous power efficiency (lm/W) vs luminance (cd/m²) characteristics for Pe-LED device with B3PYMPM (green line circles) and TPBi (blue line stars). The filled symbols correspond to luminous efficacy cd/A and open symbols correspond to lm/W.