Journal ArticleDOI
Enhancing the Stability of Perovskite Quantum Dots by Encapsulation in Crosslinked Polystyrene Beads via a Swelling–Shrinking Strategy toward Superior Water Resistance
Yi Wei,Yi Wei,Xiaoran Deng,Zhongxi Xie,Zhongxi Xie,Xuechao Cai,Sisi Liang,Sisi Liang,Ping'an Ma,Zhiyao Hou,Ziyong Cheng,Jun Lin +11 more
Reads0
Chats0
TLDR
In this paper, highly luminescent perovskite-polystyrene composite beads with uniform morphology are prepared via a simple swelling-shrinking strategy, which is carried out only in nonpolar toluene and hexane without the addition of any polar reagents.Abstract:
Organic/inorganic hybrid lead halide perovskites are promising optoelectronic materials due to their unique structure, excellent properties, and fascinating potential applications in lighting, photovoltaic, etc. However, perovskite materials are very sensitive to moisture and polar solvent, which greatly hinders their practical applications. Here, highly luminescent perovskite–polystyrene composite beads with uniform morphology are prepared via a simple swelling–shrinking strategy. This process is carried out only in nonpolar toluene and hexane without the addition of any polar reagents. As a result, the as-prepared composite beads not only retain high luminescence but also exhibit superior water-resistant property. The composites emit strong luminescence after being immersed into water over nine months. Moreover, even in some harsh environments such as acid/alkali aqueous solution, phosphate buffer solution, and Dulbecco's modified eagle medium biological buffers, they still preserve high luminescence. The applications in light-emitting diodes and cellular labeling agents are also carried out to demonstrate their ultrastability.read more
Citations
More filters
Journal ArticleDOI
Metal Halide Perovskite Nanocrystals: Synthesis, Post-Synthesis Modifications and Their Optical Properties
Javad Shamsi,Alexander S. Urban,Muhammad Imran,Muhammad Imran,Luca De Trizio,Liberato Manna,Liberato Manna +6 more
TL;DR: In this paper, the authors provide an updated survey of the field of halide perovskite nanocomposite colloidal synthesis, with a main focus on their colloidal synthetic routes to control shape, size and optical properties of the resulting nano-crystals.
Journal ArticleDOI
Metal Halide Perovskite Nanocrystals: Synthesis, Post-Synthesis Modifications, and Their Optical Properties.
Javad Shamsi,Alexander S. Urban,Muhammad Imran,Muhammad Imran,Luca De Trizio,Liberato Manna,Liberato Manna +6 more
TL;DR: This review aims to provide an up-to-date survey of this fast-moving field and will mainly focus on the different colloidal synthesis approaches that have been developed and on the fundamental optical properties of halide perovskite nanocrystals.
Journal ArticleDOI
An overview on enhancing the stability of lead halide perovskite quantum dots and their applications in phosphor-converted LEDs
TL;DR: This review summarizes the mechanisms of intrinsic- and extrinsic-environment-induced decomposition of perovskite quantum dots and some possible solutions to improve the stability of PQDs together with suggestions for further improving the performance of pc-LEDs as well as the device lifetime.
Journal ArticleDOI
Interfacial Synthesis of Highly Stable CsPbX3/Oxide Janus Nanoparticles
Huicheng Hu,Linzhong Wu,Linzhong Wu,Yeshu Tan,Qixuan Zhong,Min Chen,Yinghua Qiu,Di Yang,Baoquan Sun,Qiao Zhang,Yadong Yin +10 more
TL;DR: This work provides a novel approach for the surface modification of individual CsPbX3 NCs but also helps to address the challenging stability issue; therefore, it has an important implication toward their practical applications.
Journal ArticleDOI
All-Inorganic Metal Halide Perovskite Nanocrystals: Opportunities and Challenges.
Qiao Zhang,Yadong Yin +1 more
TL;DR: The recent developments in the preparation, properties, and applications of all-inorganic metal halide perovskite nanocrystals are discussed, with a particular focus on CsPbX3, and the view of current challenges and future directions in this emerging area is provided.
References
More filters
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
High-performance photovoltaic perovskite layers fabricated through intramolecular exchange
Woon Seok Yang,Jun Hong Noh,Nam Joong Jeon,Young Chan Kim,Seungchan Ryu,Jangwon Seo,Sang Il Seok +6 more
TL;DR: An approach for depositing high-quality FAPbI3 films, involving FAP bI3 crystallization by the direct intramolecular exchange of dimethylsulfoxide (DMSO) molecules intercalated in PbI2 with formamidinium iodide is reported.
Journal ArticleDOI
Compositional engineering of perovskite materials for high-performance solar cells
Nam Joong Jeon,Jun Hong Noh,Woon Seok Yang,Young Chan Kim,Seungchan Ryu,Jangwon Seo,Sang Il Seok +6 more
TL;DR: This work combines the promising—but relatively unstable formamidinium lead iodide with FAPbI3 with methylammonium lead bromide as the light-harvesting unit in a bilayer solar-cell architecture and improves the power conversion efficiency of the solar cell to more than 18 per cent under a standard illumination.
Journal ArticleDOI
Quantum-dot-tagged microbeads for multiplexed optical coding of biomolecules.
TL;DR: Investigation and spectroscopic measurements indicate that the QD-tagged beads are highly uniform and reproducible, yielding bead identification accuracies as high as 99.99% under favorable conditions.