Quantum Dot Light‐Emitting Diodes Based on Inorganic Perovskite Cesium Lead Halides (CsPbX<sub>3</sub>)

Song, Jizhong; Li, Jianhai; Li, Xiaoming; Xu, Leimeng; Dong, Yue; Zeng, Haibo

doi:10.1002/adma.201502567

Cited by 2,589 publications

(2,062 citation statements)

References 27 publications

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“…These optoelectronic properties make hybrid perovskites ideal candidates for solar cell applications,22, 25, 30, 31, 32, 33, 34, 35, 36, 37, 38 LEDs,39, 40, 41 lasers,42, 43 etc. A certificated power conversion efficiency (PCE) as high as 22.1% has been achieved, which approaches the highest PCE for Si solar cells 44.…”

Section: Perovskite Materialsmentioning

confidence: 99%

Recent Progress in Single‐Crystalline Perovskite Research Including Crystal Preparation, Property Evaluation, and Applications

2017

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Organic–inorganic lead halide perovskites are promising optoelectronic materials resulting from their significant light absorption properties and unique long carrier dynamics, such as a long carrier lifetime, carrier diffusion length, and high carrier mobility. These advantageous properties have allowed for the utilization of lead halide perovskite materials in solar cells, LEDs, photodetectors, lasers, etc. To further explore their potential, intrinsic properties should be thoroughly investigated. Single crystals with few defects are the best candidates to disclose a variety of interesting and important properties of these materials, ultimately, showing the increased importance of single‐crystalline perovskite research. In this review, recent progress on the crystallization, investigation, and primary device applications of single‐crystalline perovskites are summarized and analyzed. Further improvements in device design and preparation are also discussed.

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Section: Perovskite Materialsmentioning

confidence: 99%

Recent Progress in Single‐Crystalline Perovskite Research Including Crystal Preparation, Property Evaluation, and Applications

2017

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“…As a result, a variety of unprecedented fruits have been yielded, which has been described as a “perovskite fever.”12, 13, 14, 15, 16 More importantly, the skyrocketing PCE of PSCs does not seem to hit an insurmountable bottleneck, further revealing the significance of OIHPs‐related studies 17, 18, 19. In addition to intensive studies on PSCs, OIHPs also hold great potential in many other fields such as field effect transistors (FETs), light emitting diodes (LEDs), and photodetectors owing to the remarkable optoelectronic characteristics of OIHPs (e.g., high external quantum efficiency (EQE) over a wide absorption spectrum, high absorption coefficients, tunable optical band gaps, low trap density, reduced charge carrier recombination rates, and long charge carrier diffusion lengths and lifetimes) 20, 21, 22, 23, 24, 25, 26. Among these photovoltaic or optoelectronic devices, photodetectors (PDs), which convert light into electric signals, have been widely employed as fundamental devices in the optical communication, automatic control, video imaging, biochemical sensors, night vision, missile guidance, and many other industrial or military fields 27, 28, 29.…”

Section: Introductionmentioning

confidence: 99%

Photodetectors Based on Organic–Inorganic Hybrid Lead Halide Perovskites

2017

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Recent years have witnessed skyrocketing research achievements in organic–inorganic hybrid lead halide perovskites (OIHPs) in the photovoltaic field. In addition to photovoltaics, more and more studies have focused on OIHPs‐based photodetectors in the past two years, due to the remarkable optoelectronic properties of OIHPs. This article summarizes the latest progress in this research field. To begin with, the factors influencing the performance of photodetectors are discussed, including both internal and external factors. In particular, the channel width and the incident power intensities should be taken into account to precisely and objectively evaluate and compare the output performance of different photodetectors. Next, photodetectors fabricated on single‐component perovskites in terms of different micromorphologies are discussed, namely, 3D thin‐film and single crystalline, 2D nanoplates, 1D nanowires, and 0D nanocrystals, respectively. Then, bilayer structured perovskite‐based photodetectors incorporating inorganic and organic semiconductors are discussed to improve the optoelectronic performance of their pristine counterparts. Additionally, flexible OIHPs‐based photodetectors are highlighted. Finally, a brief conclusion and outlook is given on the progress and challenges in the field of perovskites‐based photodetectors.

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“…15 In this regard, CsPbX 3 NCs have been utilized as the emissive layer in electroluminescent monochromatic and color conversion QD-LEDs showing exceptionally narrow emission bandwidths and thus high color quality in devices. [16][17][18][19][20] However, while CsPbX 3 (X = Br, I) perovskite NCs can be stored in solution, maintaining their luminescence for several months, they suffer from humidity, light and temperature driven degradation in operation conditions and from a low colloidal stability with a related limited processability. 21 In part, this is associated with a highly dynamic ligand binding to the NC surface, 22 which additionally hinders the NCs' post-synthetic purification and further functionalization.…”

Section: Introductionmentioning

confidence: 99%

Polymer-Enhanced Stability of Inorganic Perovskite Nanocrystals and Their Application in Color Conversion LEDs

Meyns

Perálvarez

Heuer‐Jungemann

et al. 2016

ACS Appl. Mater. Interfaces

308

229

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Cesium lead halide (CsPbX 3 , X = Cl, Br, I) nanocrystals (NCs) offer exceptional optical properties for several potential applications but their implementation is hindered by a low chemical and structural stability and limited processability. In the present work, we developed a new method to efficiently coat CsPbX 3 NCs, which resulted in their increased chemical and optical stability as well as processability. The method is based on the incorporation of poly(maleic anhydride-alt-1-octadecene) (PMA) into the synthesis of the perovskite NCs. The presence of PMA in the ligand shell stabilizes the NCs by tightening the ligand binding, limiting in this way the NC surface interaction with the surrounding media. We further show that these NCs can be embedded in self-standing silicone/glass plates as down-conversion filters for the fabrication of monochromatic green and white light emitting diodes (LEDs) with narrow bandwidths and appealing color characteristics.

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Quantum Dot Light‐Emitting Diodes Based on Inorganic Perovskite Cesium Lead Halides (CsPbX₃)

Cited by 2,589 publications

References 27 publications

Recent Progress in Single‐Crystalline Perovskite Research Including Crystal Preparation, Property Evaluation, and Applications

Recent Progress in Single‐Crystalline Perovskite Research Including Crystal Preparation, Property Evaluation, and Applications

Photodetectors Based on Organic–Inorganic Hybrid Lead Halide Perovskites

Polymer-Enhanced Stability of Inorganic Perovskite Nanocrystals and Their Application in Color Conversion LEDs

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Quantum Dot Light‐Emitting Diodes Based on Inorganic Perovskite Cesium Lead Halides (CsPbX3)

Cited by 2,589 publications

References 27 publications

Recent Progress in Single‐Crystalline Perovskite Research Including Crystal Preparation, Property Evaluation, and Applications

Recent Progress in Single‐Crystalline Perovskite Research Including Crystal Preparation, Property Evaluation, and Applications

Photodetectors Based on Organic–Inorganic Hybrid Lead Halide Perovskites

Polymer-Enhanced Stability of Inorganic Perovskite Nanocrystals and Their Application in Color Conversion LEDs

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Quantum Dot Light‐Emitting Diodes Based on Inorganic Perovskite Cesium Lead Halides (CsPbX₃)