Journal ArticleDOI
Rearranging Low-Dimensional Phase Distribution of Quasi-2D Perovskites for Efficient Sky-Blue Perovskite Light-Emitting Diodes.
Peiyuan Pang,Guangrong Jin,Chao Liang,Bingzhe Wang,Wei Xiang,Dengliang Zhang,Jingwei Xu,Wei Hong,Zewen Xiao,Lei Wang,Guichuan Xing,Jiangshan Chen,Dongge Ma +12 more
TLDR
Efficient sky-blue perovskite LEDs are reported by rearranging low-dimensional phase distribution in quasi-2Dperovskites by sodium ion and optimizing the phase distribution and film morphology by Pb content.Abstract:
Metal halide perovskites have received much attention for their application in light-emitting diodes (LEDs) in the past several years Rapid progress has been made in efficient green, red, and nearread more
Citations
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Journal ArticleDOI
The 2D Halide Perovskite Rulebook: How the Spacer Influences Everything from the Structure to Optoelectronic Device Efficiency.
TL;DR: In this paper, the authors provide guidelines on successfully choosing spacers and incorporating them into crystalline materials and optoelectronic devices and provide a summary of various synthetic methods to act as a tutorial for groups interested in pursuing synthesis of novel 2D halide perovskites.
Journal ArticleDOI
High-performance quasi-2D perovskite light-emitting diodes: from materials to devices.
TL;DR: In this article, the inherent properties of quasi-2D perovskite materials, the corresponding energy transfer and spectral tunability methodologies for thin films, as well as their application in high-performance LEDs are summarized.
Journal ArticleDOI
High-Performance Blue Perovskite Light-Emitting Diodes Enabled by Efficient Energy Transfer between Coupled Quasi-2D Perovskite Layers.
Zhenwei Ren,Jiahao Yu,Zhaotong Qin,Jing Wang,Jiayun Sun,Christopher C. S. Chan,Shihao Ding,Kai Wang,Rui Chen,Kam Sing Wong,Xinhui Lu,Wan-Jian Yin,Wallace C. H. Choy +12 more
TL;DR: In this work, a bifunctional ligand of 4-(2-aminoethyl)benzoic acid (ABA) cation is strategically introduced into the perovskite to diminish the weak van der Waals gap between individual perovSkite layers for promoting coupled quasi-2D perovSKite layers.
Journal ArticleDOI
Perovskite Quantum Dots with Ultralow Trap Density by Acid Etching-Driven Ligand Exchange for High Luminance and Stable Pure-Blue Light-Emitting Diodes
TL;DR: In this paper, an acid etching-driven ligand exchange strategy was devised for achieving pure-blue emitting small-sized (≈4nm) CsPbBr3 perovskite quantum dots (QDs) with ultralow trap density and excellent stability.
References
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Journal ArticleDOI
Organometal Halide Perovskites as Visible-Light Sensitizers for Photovoltaic Cells
TL;DR: Two organolead halide perovskite nanocrystals were found to efficiently sensitize TiO(2) for visible-light conversion in photoelectrochemical cells, which exhibit strong band-gap absorptions as semiconductors.
Journal ArticleDOI
Nanocrystals of Cesium Lead Halide Perovskites (CsPbX3, X = Cl, Br, and I): Novel Optoelectronic Materials Showing Bright Emission with Wide Color Gamut
Loredana Protesescu,Loredana Protesescu,Sergii Yakunin,Sergii Yakunin,Maryna I. Bodnarchuk,Maryna I. Bodnarchuk,Franziska Krieg,Franziska Krieg,Riccarda Caputo,Christopher H. Hendon,Ruo Xi Yang,Aron Walsh,Maksym V. Kovalenko,Maksym V. Kovalenko +13 more
TL;DR: The compelling combination of enhanced optical properties and chemical robustness makes CsPbX3 nanocrystals appealing for optoelectronic applications, particularly for blue and green spectral regions (410–530 nm), where typical metal chalcogenide-based quantum dots suffer from photodegradation.
Journal ArticleDOI
Cesium-containing triple cation perovskite solar cells: improved stability, reproducibility and high efficiency
Michael Saliba,Taisuke Matsui,Ji-Youn Seo,Konrad Domanski,Juan-Pablo Correa-Baena,Mohammad Khaja Nazeeruddin,Shaik M. Zakeeruddin,Wolfgang Tress,Antonio Abate,Anders Hagfeldt,Michael Grätzel +10 more
TL;DR: In this paper, the triple cation perovskite photovoltaics with inorganic cesium were shown to be thermally more stable, contain less phase impurities and are less sensitive to processing conditions.
Journal ArticleDOI
Perovskite light-emitting diodes with external quantum efficiency exceeding 20 per cent
Kebin Lin,Jun Xing,Li Na Quan,F. Pelayo García de Arquer,Xiwen Gong,Jianxun Lu,Liqiang Xie,Weijie Zhao,Di Zhang,Chuanzhong Yan,Wenqiang Li,Xinyi Liu,Yan Lu,Jeffrey Kirman,Edward H. Sargent,Qihua Xiong,Zhanhua Wei +16 more
TL;DR: In this article, the authors describe visible-light-emitting perovskite LEDs that surpass the quantum efficiency milestone of 20.3 per cent, which is achieved by a new strategy for managing the compositional distribution in the device.
Journal ArticleDOI
Quantum Dot Light-Emitting Diodes Based on Inorganic Perovskite Cesium Lead Halides (CsPbX3)
TL;DR: The demonstration of these novel quantum-dot light-emitting diodes based on all-inorganic perovskite CsPbX3 (X = Cl, Br, I) nanocrystals opens a new avenue toward designing optoelectronic devices, such as displays, photodetectors, solar cells, and lasers.