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Thermal Properties of Polymer Hole-Transport Layers Influence the Efficiency Roll-off and Stability of Perovskite Light-Emitting Diodes.
Zhao, Lianfeng; Astridge, Daniel D; Gunnarsson, William B; Xu, Zhaojian; Hong, Jisu; Scott, Jonathan; Kacmoli, Sara; Al Kurdi, Khaled; Barlow, Stephen; Marder, Seth R; Gmachl, Claire F; Sellinger, Alan; Rand, Barry P.
Afiliación
  • Zhao L; Department of Electrical and Computer Engineering, Princeton University, Princeton, New Jersey 08544, United States.
  • Astridge DD; Holcombe Department of Electrical and Computer Engineering, Clemson University, Clemson, South Carolina 29634, United States.
  • Gunnarsson WB; Department of Chemistry, Colorado School of Mines, Golden, Colorado 80401, United States.
  • Xu Z; Department of Electrical and Computer Engineering, Princeton University, Princeton, New Jersey 08544, United States.
  • Hong J; Department of Electrical and Computer Engineering, Princeton University, Princeton, New Jersey 08544, United States.
  • Scott J; Department of Electrical and Computer Engineering, Princeton University, Princeton, New Jersey 08544, United States.
  • Kacmoli S; Department of Electrical and Computer Engineering, Princeton University, Princeton, New Jersey 08544, United States.
  • Al Kurdi K; Department of Electrical and Computer Engineering, Princeton University, Princeton, New Jersey 08544, United States.
  • Barlow S; School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.
  • Marder SR; School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.
  • Gmachl CF; Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States.
  • Sellinger A; School of Chemistry and Biochemistry and Center for Organic Photonics and Electronics, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.
  • Rand BP; Renewable and Sustainable Energy Institute, University of Colorado Boulder, Boulder, Colorado 80303, United States.
Nano Lett ; 23(11): 4785-4792, 2023 Jun 14.
Article en En | MEDLINE | ID: mdl-37220025
ABSTRACT
While the performance of metal halide perovskite light-emitting diodes (PeLEDs) has rapidly improved in recent years, their stability remains a bottleneck to commercial realization. Here, we show that the thermal stability of polymer hole-transport layers (HTLs) used in PeLEDs represents an important factor influencing the external quantum efficiency (EQE) roll-off and device lifetime. We demonstrate a reduced EQE roll-off, a higher breakdown current density of approximately 6 A cm-2, a maximum radiance of 760 W sr-1 m-2, and a longer device lifetime for PeLEDs using polymer HTLs with high glass-transition temperatures. Furthermore, for devices driven by nanosecond electrical pulses, a record high radiance of 1.23 MW sr-1 m-2 and an EQE of approximately 1.92% at 14.6 kA cm-2 are achieved. Thermally stable polymer HTLs enable stable operation of PeLEDs that can sustain more than 11.7 million electrical pulses at 1 kA cm-2 before device failure.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2023 Tipo del documento: Article
Texto completo
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XML
PubMed Links
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2023 Tipo del documento: Article