Additives in Halide Perovskite for Blue-Light-Emitting Diodes: Passivating Agents or Crystallization Modulators?

Nur Fadilah Jamaludin; Natalia Yantara; Benny Febriansyah; Yeow Boon Tay; Bening Tirta Muhammad; Shoba Laxmi; Swee Sien Lim; Tze Chien Sum; Subodh Mhaisalkar; Nripan Mathews

doi:10.1021/acsenergylett.1c02232

Additives in Halide Perovskite for Blue-Light-Emitting Diodes: Passivating Agents or Crystallization Modulators?

Nur Fadilah Jamaludin, Natalia Yantara^*, Benny Febriansyah, Yeow Boon Tay, Bening Tirta Muhammad, Shoba Laxmi, Swee Sien Lim, Tze Chien Sum, Subodh Mhaisalkar^*, Nripan Mathews^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

Successful adoption of defect management and carrier confinement strategies in Ruddlesden-Popper (RP) perovskites has driven the impressive improvements to performance of perovskite-based light-emitting diodes (PeLEDs) seen to date. Although functional additives have been advantageous in mitigating defects, their influence over crystallization behavior of RP (L2Am-1PbmX3m+1) perovskites has yet to be fully studied. This is especially important for blue-emitting monohalide RP perovskites, where stringent control over m domain distribution is needed for efficient PeLEDs. Herein, we investigate the effect of triphenylphosphine oxide (TPPO) on crystallization behavior of blue RP (PBA2Csm-1PbmBr3m+1) perovskites. Despite TPPO addition, its absence in the resulting film eliminates its role as a passivating agent. Instead, TPPO acts as crystallization and phase distribution modulator─promoting the formation of a narrow distribution of higher m domains with higher Br content. In doing so, an enhancement of ∼35% was noted with the champion device yielding efficiency of 3.8% at λ of 483 nm.

Original language	English
Pages (from-to)	4265-4272
Number of pages	8
Journal	ACS Energy Letters
Volume	6
Issue number	12
DOIs	https://doi.org/10.1021/acsenergylett.1c02232
Publication status	Published - Dec 10 2021
Externally published	Yes

Bibliographical note

Publisher Copyright:
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ASJC Scopus Subject Areas

Chemistry (miscellaneous)
Renewable Energy, Sustainability and the Environment
Fuel Technology
Energy Engineering and Power Technology
Materials Chemistry

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/acsenergylett.1c02232

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title = "Additives in Halide Perovskite for Blue-Light-Emitting Diodes: Passivating Agents or Crystallization Modulators?",

abstract = "Successful adoption of defect management and carrier confinement strategies in Ruddlesden-Popper (RP) perovskites has driven the impressive improvements to performance of perovskite-based light-emitting diodes (PeLEDs) seen to date. Although functional additives have been advantageous in mitigating defects, their influence over crystallization behavior of RP (L2Am-1PbmX3m+1) perovskites has yet to be fully studied. This is especially important for blue-emitting monohalide RP perovskites, where stringent control over m domain distribution is needed for efficient PeLEDs. Herein, we investigate the effect of triphenylphosphine oxide (TPPO) on crystallization behavior of blue RP (PBA2Csm-1PbmBr3m+1) perovskites. Despite TPPO addition, its absence in the resulting film eliminates its role as a passivating agent. Instead, TPPO acts as crystallization and phase distribution modulator─promoting the formation of a narrow distribution of higher m domains with higher Br content. In doing so, an enhancement of ∼35% was noted with the champion device yielding efficiency of 3.8% at λ of 483 nm.",

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AU - Jamaludin, Nur Fadilah

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AU - Febriansyah, Benny

AU - Tay, Yeow Boon

AU - Muhammad, Bening Tirta

AU - Laxmi, Shoba

AU - Lim, Swee Sien

AU - Sum, Tze Chien

AU - Mhaisalkar, Subodh

AU - Mathews, Nripan

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N2 - Successful adoption of defect management and carrier confinement strategies in Ruddlesden-Popper (RP) perovskites has driven the impressive improvements to performance of perovskite-based light-emitting diodes (PeLEDs) seen to date. Although functional additives have been advantageous in mitigating defects, their influence over crystallization behavior of RP (L2Am-1PbmX3m+1) perovskites has yet to be fully studied. This is especially important for blue-emitting monohalide RP perovskites, where stringent control over m domain distribution is needed for efficient PeLEDs. Herein, we investigate the effect of triphenylphosphine oxide (TPPO) on crystallization behavior of blue RP (PBA2Csm-1PbmBr3m+1) perovskites. Despite TPPO addition, its absence in the resulting film eliminates its role as a passivating agent. Instead, TPPO acts as crystallization and phase distribution modulator─promoting the formation of a narrow distribution of higher m domains with higher Br content. In doing so, an enhancement of ∼35% was noted with the champion device yielding efficiency of 3.8% at λ of 483 nm.

AB - Successful adoption of defect management and carrier confinement strategies in Ruddlesden-Popper (RP) perovskites has driven the impressive improvements to performance of perovskite-based light-emitting diodes (PeLEDs) seen to date. Although functional additives have been advantageous in mitigating defects, their influence over crystallization behavior of RP (L2Am-1PbmX3m+1) perovskites has yet to be fully studied. This is especially important for blue-emitting monohalide RP perovskites, where stringent control over m domain distribution is needed for efficient PeLEDs. Herein, we investigate the effect of triphenylphosphine oxide (TPPO) on crystallization behavior of blue RP (PBA2Csm-1PbmBr3m+1) perovskites. Despite TPPO addition, its absence in the resulting film eliminates its role as a passivating agent. Instead, TPPO acts as crystallization and phase distribution modulator─promoting the formation of a narrow distribution of higher m domains with higher Br content. In doing so, an enhancement of ∼35% was noted with the champion device yielding efficiency of 3.8% at λ of 483 nm.

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Additives in Halide Perovskite for Blue-Light-Emitting Diodes: Passivating Agents or Crystallization Modulators?

Abstract

Bibliographical note

ASJC Scopus Subject Areas

UN SDGs

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