Effect of Passivating Molecules and Antisolvents on Lifetime of Green Dion-Jacobson Perovskite Light-Emitting Diodes

Xinshun Qin; Yanling He; Chun Ki Tao; Aleksandr Sergeev; Kam Sing Wong; Zhilin Ren; Qiong Liang; Tik Lun Leung; Gang Li; Jasminka Popović; Alan Man Ching Ng; Aleksandra B. Djurišić

doi:10.1021/acsami.3c02170

Effect of Passivating Molecules and Antisolvents on Lifetime of Green Dion-Jacobson Perovskite Light-Emitting Diodes

Xinshun Qin, Yanling He, Chun Ki Tao, Aleksandr Sergeev, Kam Sing Wong, Zhilin Ren, Qiong Liang, Tik Lun Leung, Gang Li, Jasminka Popović, Alan Man Ching Ng, Aleksandra B. Djurišić

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

7 Citations (Scopus)

Abstract

We investigated the influence of two passivating molecules containing a P═O group on the performance of quasi-2D Dion-Jacobson halide perovskite light-emitting diodes, namely, triphenylphosphine oxide (TPPO) and diphenyl-4-triphenylsilylphenyl phosphine oxide (TSPO1). We found that both passivating molecules lead to increased efficiency compared to control devices, while they had opposite effects on device lifetime, with a decrease observed for TPPO and an increase observed for TSPO1. The two passivating molecules resulted in differences in energy-level alignment, electron injection, film morphology and crystallinity, and ion migration during operation. While TPPO resulted in improved photoluminescence decay times, overall higher maximum external quantum efficiency (EQE) and device lifetime were obtained for TSPO1 compared to TPPO (14.4% vs 12.4% EQE, 341 min vs 42 min T₅₀).

Original language	English
Pages (from-to)	30083-30092
Number of pages	10
Journal	ACS Applied Materials and Interfaces
Volume	15
Issue number	25
DOIs	https://doi.org/10.1021/acsami.3c02170
Publication status	Published - 28 Jun 2023

Keywords

lead halide perovskite
LED
lifetime
passivation
stability

ASJC Scopus subject areas

General Materials Science

More information

10.1021/acsami.3c02170

Cite this

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title = "Effect of Passivating Molecules and Antisolvents on Lifetime of Green Dion-Jacobson Perovskite Light-Emitting Diodes",

abstract = "We investigated the influence of two passivating molecules containing a P═O group on the performance of quasi-2D Dion-Jacobson halide perovskite light-emitting diodes, namely, triphenylphosphine oxide (TPPO) and diphenyl-4-triphenylsilylphenyl phosphine oxide (TSPO1). We found that both passivating molecules lead to increased efficiency compared to control devices, while they had opposite effects on device lifetime, with a decrease observed for TPPO and an increase observed for TSPO1. The two passivating molecules resulted in differences in energy-level alignment, electron injection, film morphology and crystallinity, and ion migration during operation. While TPPO resulted in improved photoluminescence decay times, overall higher maximum external quantum efficiency (EQE) and device lifetime were obtained for TSPO1 compared to TPPO (14.4% vs 12.4% EQE, 341 min vs 42 min T50).",

keywords = "lead halide perovskite, LED, lifetime, passivation, stability",

author = "Xinshun Qin and Yanling He and Tao, {Chun Ki} and Aleksandr Sergeev and Wong, {Kam Sing} and Zhilin Ren and Qiong Liang and Leung, {Tik Lun} and Gang Li and Jasminka Popovi{\'c} and Ng, {Alan Man Ching} and Djuri{\v s}i{\'c}, {Aleksandra B.}",

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language = "English",

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T1 - Effect of Passivating Molecules and Antisolvents on Lifetime of Green Dion-Jacobson Perovskite Light-Emitting Diodes

AU - Qin, Xinshun

AU - He, Yanling

AU - Tao, Chun Ki

AU - Sergeev, Aleksandr

AU - Wong, Kam Sing

AU - Ren, Zhilin

AU - Liang, Qiong

AU - Leung, Tik Lun

AU - Li, Gang

AU - Popović, Jasminka

AU - Ng, Alan Man Ching

AU - Djurišić, Aleksandra B.

PY - 2023/6/28

Y1 - 2023/6/28

N2 - We investigated the influence of two passivating molecules containing a P═O group on the performance of quasi-2D Dion-Jacobson halide perovskite light-emitting diodes, namely, triphenylphosphine oxide (TPPO) and diphenyl-4-triphenylsilylphenyl phosphine oxide (TSPO1). We found that both passivating molecules lead to increased efficiency compared to control devices, while they had opposite effects on device lifetime, with a decrease observed for TPPO and an increase observed for TSPO1. The two passivating molecules resulted in differences in energy-level alignment, electron injection, film morphology and crystallinity, and ion migration during operation. While TPPO resulted in improved photoluminescence decay times, overall higher maximum external quantum efficiency (EQE) and device lifetime were obtained for TSPO1 compared to TPPO (14.4% vs 12.4% EQE, 341 min vs 42 min T50).

AB - We investigated the influence of two passivating molecules containing a P═O group on the performance of quasi-2D Dion-Jacobson halide perovskite light-emitting diodes, namely, triphenylphosphine oxide (TPPO) and diphenyl-4-triphenylsilylphenyl phosphine oxide (TSPO1). We found that both passivating molecules lead to increased efficiency compared to control devices, while they had opposite effects on device lifetime, with a decrease observed for TPPO and an increase observed for TSPO1. The two passivating molecules resulted in differences in energy-level alignment, electron injection, film morphology and crystallinity, and ion migration during operation. While TPPO resulted in improved photoluminescence decay times, overall higher maximum external quantum efficiency (EQE) and device lifetime were obtained for TSPO1 compared to TPPO (14.4% vs 12.4% EQE, 341 min vs 42 min T50).

KW - lead halide perovskite

KW - LED

KW - lifetime

KW - passivation

KW - stability

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DO - 10.1021/acsami.3c02170

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ER -

Effect of Passivating Molecules and Antisolvents on Lifetime of Green Dion-Jacobson Perovskite Light-Emitting Diodes

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Keywords

ASJC Scopus subject areas

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