Achieving High Moisture Tolerance in Pseudohalide Perovskite Nanocrystals for Light-Emitting Diode Application

Bhatia, Harshita; Keshavarz, Masoumeh; Martín, Cristina; Gaal, Lajos; Zhang, Yiyue; Coen, Brend de; Schrenker, Nadine; Valli, Donato; Ottesen, Martin; Bremholm, Martin; Vondel, J. Van de; Bals, Sara; Hofkens, Johan; Debroye, Elke

doi:10.1021/acsaom.3c00096

Cited by 3 publications

(1 citation statement)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…have fascinating optical properties (e.g., sharp emission and broad absorption, high luminescence), issues surrounding their toxicity, extended synthesis, and purification efforts pose significant challenges . Consequently, researchers have shifted their focus to metal halide perovskites (MHPs) due to their facile synthesis, extensively tunable band structure, narrow emission bandwidth, high photoluminescence quantum yield (PLQY), short exciton lifetime, and high absorption coefficients, which encourages applications in light-emitting diodes (LEDs), display technology, solar cells, energy harvesting materials, and scintillators. − …”

Section: Introductionmentioning

confidence: 99%

Tunable Green-to-Blue Light Emitting Hybrid Perovskite Nanocrystals: Status Updates and Roadblocks

Bansal,

Bhatia,

Debroye

2023

ACS Photonics

Self Cite

View full text Add to dashboard Cite

Perovskite nanocrystals (NCs) have demonstrated tremendous success in the field of optoelectronics due to their exceptional optical properties. Their high photoluminescence quantum yield (PLQY), tunable emission, defect tolerance, and facile synthesis make them ideal candidates for application in light-emitting diodes (LED). While the external quantum efficiency (EQE) of green and red perovskite-based LEDs (PeLEDs) has exceeded 20%, which is on par with organic- and quantum dot-based LEDs, blue PeLEDs still lag behind their counterparts. This review focuses on the evolution of obtaining highly efficient, tunable green-to-blue emitting methylammonium lead bromide (MAPbBr3) perovskite NCs by optimizing their optoelectronic properties. In detail, we first review the strategies for synthesizing and fine-tuning their emission spectra (450–520 nm), followed by a discussion on the key issues for achieving highly stable blue-emitting NCs and how to overcome these issues. The pros and cons of ligand engineering, metal doping, core–shell structure formation, and postsynthetic treatments are discussed. This Review also covers the progress in the fabrication of blue- and green-emitting PeLEDs, including device architecture optimization for maximizing the light out-coupling efficiency. Finally, the remaining challenges and future opportunities for blue-emitting MA-based PeLEDs are outlined.

show abstract

Section: Introductionmentioning

confidence: 99%

Tunable Green-to-Blue Light Emitting Hybrid Perovskite Nanocrystals: Status Updates and Roadblocks

Bansal,

Bhatia,

Debroye

2023

ACS Photonics

Self Cite

View full text Add to dashboard Cite

show abstract

Recent Advances in Perovskite-Based Flexible Electroluminescent Devices

Chun,

Wang

2024

ACS Nano

View full text Add to dashboard Cite

Perovskite-based flexible electroluminescent (EL) devices are emerging as promising candidates in the display field due to their exceptional optoelectronic properties and potential for cost-effective production. However, simultaneously achieving high EL performance, excellent flexibility and stretchability, robust mechanical strength, and diverse applications remains a significant challenge. In this review, we provide a comprehensive overview of the latest developments in perovskite-based flexible EL devices, covering both direct-current (DC) and alternating-current (AC) electroluminescent formats. Our discussion encompasses the materials, working principles, device architectures, failure mechanisms, optimization strategies, and practical applications. Through this review, we aim to deepen our understanding of the current challenges and future directions of perovskite-based flexible light-emitting technologies, hoping to facilitate their potential commercial applications.

show abstract

Phase stabilization of cesium lead iodide perovskites for use in efficient optoelectronic devices

Jin,

Zeng,

Steele

et al. 2024

NPG Asia Mater

Self Cite

View full text Add to dashboard Cite

All-inorganic lead halide perovskites (LHPs) and their use in optoelectronic devices have been widely explored because they are more thermally stable than their hybrid organic‒inorganic counterparts. However, the active perovskite phases of some inorganic LHPs are metastable at room temperature due to the critical structural tolerance factor. For example, black phase CsPbI3 is easily transformed back to the nonperovskite yellow phase at ambient temperature. Much attention has been paid to improving the phase stabilities of inorganic LHPs, especially those with high solar cell efficiencies. Herein, we discussed the origin of phase stability for CsPbI3 and the strategies used to stabilize the cubic (α) phase. We also assessed the CsPbI3 black β/γ phases that are relatively stable at nearly room temperature. Furthermore, we determined the relationship between phase stabilization and defect passivation and reviewed the growing trend in solar cell efficiency based on black phase CsPbI3. Finally, we provide perspectives for future research related to the quest for optimum device efficiency and green energy.

show abstract

Achieving High Moisture Tolerance in Pseudohalide Perovskite Nanocrystals for Light-Emitting Diode Application

Cited by 3 publications

References 54 publications

Tunable Green-to-Blue Light Emitting Hybrid Perovskite Nanocrystals: Status Updates and Roadblocks

Tunable Green-to-Blue Light Emitting Hybrid Perovskite Nanocrystals: Status Updates and Roadblocks

Recent Advances in Perovskite-Based Flexible Electroluminescent Devices

Phase stabilization of cesium lead iodide perovskites for use in efficient optoelectronic devices

Contact Info

Product

Resources

About