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.

doi:10.1021/acs.nanolett.3c00148

Thermal Properties of Polymer Hole-Transport Layers Influence the Efficiency Roll-off and Stability of Perovskite Light-Emitting Diodes

Journal Article · Tue May 23 00:00:00 EDT 2023 · Nano Letters

DOI:https://doi.org/10.1021/acs.nanolett.3c00148· OSTI ID:1985637

^[1]; ^[2]; Gunnarsson, William B. ^[3]; ^[3]; Hong, Jisu ^[3]; Scott, Jonathan ^[3]; Kacmoli, Sara ^[3]; Al Kurdi, Khaled ^[4]; ^[5]; ^[5]; Gmachl, Claire F. ^[3]; ^[6]; ^[3]

Princeton Univ., NJ (United States); Clemson Univ., SC (United States)
Colorado School of Mines, Golden, CO (United States)
Princeton Univ., NJ (United States)
Georgia Institute of Technology, Atlanta, GA (United States)
Georgia Institute of Technology, Atlanta, GA (United States); Univ. of Colorado, Boulder, CO (United States)
Colorado School of Mines, Golden, CO (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States)

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.

View Accepted Manuscript (DOE)

Research Organization:: National Renewable Energy Laboratory (NREL), Golden, CO (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office

Grant/Contract Number:: AC36-08GO28308

OSTI ID:: 1985637

Report Number(s):: NREL/JA-5900-86598; MainId:87371; UUID:fd8ea55d-9df3-4edd-b6a2-515589cefc0d; MainAdminID:69794

Journal Information:: Nano Letters, Journal Name: Nano Letters Journal Issue: 11 Vol. 23; ISSN 1530-6984

Publisher:: American Chemical SocietyCopyright Statement

Country of Publication:: United States

Language:: English

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Related Subjects

14 SOLAR ENERGY
42 ENGINEERING
EQE roll-off
device stability
electrical properties
external quantum efficiency
high power
layers
perovskite light-emitting devices
polymers
pulsed operation
thermal stability

Thermal Properties of Polymer Hole-Transport Layers Influence the Efficiency Roll-off and Stability of Perovskite Light-Emitting Diodes

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