Modulation of the carrier balance of lead-halide perovskite nanocrystals by polyelectrolyte hole transport layers for near-infrared light-emitting diodes

Chih-Chien Lee; Johan Iskandar; Ade Kurniawan; Hung-Pin Hsu; Ya-Fen Wu; Hsin-Ming Cheng; Shun-Wei Liu

Heliyon (Sep 2022)

Modulation of the carrier balance of lead-halide perovskite nanocrystals by polyelectrolyte hole transport layers for near-infrared light-emitting diodes

Chih-Chien Lee,
Johan Iskandar,
Ade Kurniawan,
Hung-Pin Hsu,
Ya-Fen Wu,
Hsin-Ming Cheng,
Shun-Wei Liu

Affiliations

Chih-Chien Lee: Department of Electronic Engineering National Taiwan University of Science and Technology, Taipei City 106335, Taiwan
Johan Iskandar: Department of Electronic Engineering National Taiwan University of Science and Technology, Taipei City 106335, Taiwan; Organic Electronics Research Center, Ming Chi University of Technology, New Taipei City 243303, Taiwan
Ade Kurniawan: Department of Electronic Engineering National Taiwan University of Science and Technology, Taipei City 106335, Taiwan; Organic Electronics Research Center, Ming Chi University of Technology, New Taipei City 243303, Taiwan
Hung-Pin Hsu: Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan; Organic Electronics Research Center, Ming Chi University of Technology, New Taipei City 243303, Taiwan
Ya-Fen Wu: Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan; Organic Electronics Research Center, Ming Chi University of Technology, New Taipei City 243303, Taiwan
Hsin-Ming Cheng: Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan; Organic Electronics Research Center, Ming Chi University of Technology, New Taipei City 243303, Taiwan; Corresponding author.
Shun-Wei Liu: Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 243303, Taiwan; Organic Electronics Research Center, Ming Chi University of Technology, New Taipei City 243303, Taiwan; Corresponding author.

Journal volume & issue: Vol. 8, no. 9
p. e10504

Abstract

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An alternative material, methylamine (MA)-doped poly[3-(4-carboxymethyl)thiophene-2,5-diyl] (P3CT) as hole transport layer (HTL) was investigated for efficient solution-processed near-infrared perovskite light-emitting diodes (NIR PeLEDs). The best NIR PeLEDs performance was achieved with an optimized composition ratio of the MA-doped P3CT (1:1) due to the balance of the electron and hole carrier in the active layer. The charge-balanced NIR PeLEDs exhibit the highest radiance of 858.37 W sr−1 m−2, a low turn-on voltage of 1.82 V, and an external quantum efficiency of 7.44%. Our findings show that using P3CT as an alternative HTL has the potential to significantly improve PeLED performance, allowing it to play a role in the development of practical applications in high-power NIR LEDs.

Published in Heliyon

ISSN: 2405-8440 (Online)
Publisher: Elsevier
Country of publisher: United Kingdom
LCC subjects: Science: Science (General); Social Sciences: Social sciences (General)
Website: https://www.cell.com/heliyon/home

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