Journal ArticleDOI
Trioctylphosphine-Assisted Pre-protection Low-Temperature Solvothermal Synthesis of Highly Stable CsPbBr3/TiO2 Nanocomposites
Yongqiang Ji,Minqiang Wang,Zhi Yang,Hengwei Qiu,Hengwei Qiu,Muhammad Amin Padhiar,Yun Zhou,Hui Wang,Jialin Dang,N. V. Gaponenko,Arshad Saleem Bhatti +10 more
TLDR
In this paper, a trioctylphosphine (TOP)-assisted pre-protection low-temperature solvothermal synthesis of highly stable CsPbBr3/TiO2 nanocomposites was proposed.Abstract:
Lead halide perovskite quantum dots (PQDs) are reported as a promising branch of perovskites, which have recently emerged as a field in luminescent materials research. However, before the practical applications of PQDs can be realized, the problem of poor stability has not yet been solved. Herein, we propose a trioctylphosphine (TOP)-assisted pre-protection low-temperature solvothermal synthesis of highly stable CsPbBr3/TiO2 nanocomposites. Due to the protection of branched ligands and the lower temperature of shell formation, these TOP-modified CsPbBr3 PQDs are successfully incorporated into a TiO2 monolith without a loss of fluorescence intensity. Because the excellent nature of both parent materials is preserved in CsPbBr3/TiO2 nanocomposites, it is found that the as-prepared CsPbBr3/TiO2 nanocomposites not only display excellent photocatalytic activity but also yield improved PL stability, enabling us to build highly stable white light-emitting diodes and to photodegrade rhodamine B.read more
Citations
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Journal ArticleDOI
4-Bromo-Butyric Acid-Assisted In Situ Passivation Strategy for Superstable All-Inorganic Halide Perovskite CsPbX3 Quantum Dots in Polar Media.
TL;DR: In this article , a facile method to improve the stability of perovskite quantum dots via in situ crystallization with combined effects of 4-bromo-butyric acid (BBA) and oleylamine (OLA) in polar solvents was proposed.
Journal ArticleDOI
Strong violet emission from ultra-stable strontium-doped CsPbCl3 superlattices.
Yongqiang Ji,Minqiang Wang,Zhi Yang,Hao Wang,Muhammad Amin Padhiar,Hengwei Qiu,Jialin Dang,Yinru Miao,Yun-Zhi Zhou,Arshad Saleem Bhatti +9 more
TL;DR: In this paper , a strontium substitution along with a chlorine passivation strategy was proposed to enhance the photoluminescence quantum yields (PLQYs) of CsPbCl3 PQDs.
Journal ArticleDOI
Tuning optical properties of CsPbBr3 by mixing Nd3+ trivalent lanthanide halide cations for blue light emitting devices
TL;DR: In this paper , the optical properties of CSPbBr3 PQDs were tuned by mixing Nd3+ trivalent lanthanide halide cations for blue light-emitting devices.
Journal ArticleDOI
Preparation of ultra-stable and environmentally friendly CsPbBr3@ZrO2/PS composite films for white light-emitting diodes.
Jindou Shi,Minqiang Wang,Hao Wang,Chen Zhang,Yongqiang Ji,Junnan Wang,Yun-Zhi Zhou,Arshad Saleem Bhatti +7 more
TL;DR: In this article , the relationship function between the energization time and surface temperature of electronic devices was analyzed, after which a strategy for the preparation of dual-encapsulating perovskites using organic (polystyrene (PS)) and inorganic (ZrO2) materials was proposed, and the change in optical stability before and after encapsulation was investigated.
References
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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
Brightly Luminescent and Color-Tunable Colloidal CH3NH3PbX3 (X = Br, I, Cl) Quantum Dots: Potential Alternatives for Display Technology.
Feng Zhang,Haizheng Zhong,Cheng Chen,Xian-gang Wu,Xiangmin Hu,Huang Hailong,Junbo Han,Bingsuo Zou,Yuping Dong +8 more
TL;DR: A ligand-assisted reprecipitation strategy is developed to fabricate brightly luminescent and color-tunable colloidal CH3NH3PbX3 quantum dots with absolute quantum yield up to 70% at room temperature and low excitation fluencies, expected to exhibit interesting nanoscale excitonic properties.
Journal ArticleDOI
Properties and potential optoelectronic applications of lead halide perovskite nanocrystals
Maksym V. Kovalenko,Maksym V. Kovalenko,Loredana Protesescu,Loredana Protesescu,Maryna I. Bodnarchuk +4 more
TL;DR: The prospects of LHP NCs for optoelectronic applications such as in television displays, light-emitting devices, and solar cells are surveyed, emphasizing the practical hurdles that remain to be overcome.
Journal ArticleDOI
Intriguing Optoelectronic Properties of Metal Halide Perovskites
TL;DR: This review is a critical account of the interrelation between MHP electronic structure, absorption, emission, carrier dynamics and transport, and other relevant photophysical processes that have propelled these materials to the forefront of modern optoelectronics research.
Journal ArticleDOI
A CsPbBr3 Perovskite Quantum Dot/Graphene Oxide Composite for Photocatalytic CO2 Reduction
TL;DR: The use of CsPbBr3 QDs as novel photocatalysts to convert CO2 into solar fuels in nonaqueous media and the rate of electron consumption increased 25.5% because of improved electron extraction and transport.
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