Thin film perovskite light-emitting diode based on CsPbBr 3 powders and interfacial engineering

Zhang, Xiaoli; Wang, Weigao; Xu, Bing; Liu, Sheng; Dai, Haitao; Bian, Dun; Chen, Shuming; Wang, Kai; Sun, Xiao Wei

doi:10.1016/j.nanoen.2017.05.005

Cited by 113 publications

(69 citation statements)

References 30 publications

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“…[32,[57][58][59][60][61][62][63][80][81][82][83][84][85][86] Synthesis techniqueso fNPs include two major approaches, namely hot injection [86] and addition of precursor solution in ag ood solvent( e.g.,D MF) to ab ad solvent( e.g.,t oluene) followedb ys tabilizationw ith ligands (e.g.,o leic acid and oleylamine). [122][123][124][125][126][127][128][129][130] Although the high PLQY is obtained for ad ispersion of NPs,i ti so ften difficult to obtain high EL in devices.I tis mainly because of the fact that PLQY drops to some extent upon formationo ff ilm. This drop can be attributed to increased surface sites promoting non-radiative recombination.…”

Section: Perovskite-based Ledsmentioning

confidence: 99%

“…This drop can be attributed to increased surface sites promoting non-radiative recombination. [122][123][124][125][126][127][128][129][130][136][137][138][139] Furthermore,u sing NPs,i ti sd ifficult to prepare pinhole-freet hin films.L ie tal. circumvented this problem by embedding perovskite NPs in an insulating polyimide precursor( PIP) matrix.…”

Section: Perovskite-based Ledsmentioning

confidence: 99%

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Recent Advances in Metal Halide‐Based Perovskite Light‐Emitting Diodes

2017

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Metal‐halide perovskite materials are crystalline semiconductors that can be processed at room temperature using solution‐processible deposition techniques. In only a few years, perovskite‐based solar cell efficiencies have seen a huge increase from 3 % to 22.1 %. These direct‐bandgap materials are potential candidates for other optoelectronic device applications such as photodetectors, light‐emitting transistors, and light‐emitting diodes. In this Review, we present the current state‐of‐the‐art in the research and development of perovskite light‐emitting diodes (PeLEDs) based on metal halide perovskite semiconductors with an emphasis on size of crystallites and its effects on optical properties, device architectures, and PeLED performance parameters. A uniform pinhole‐free morphology with small grain size is essential for high‐performance PeLEDs. For this purpose, a p‐i‐n type device architecture with a p‐type poly(3,4‐ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) layer was found to be more suitable than the n‐i‐p type. In PeLEDs based on bulk‐phase perovskites, the average size of the crystallites is in the range 100–500 nm. The efficiency can be improved further by using perovskite nanoparticles with size <100 nm. Color of the emitted light from these materials can be tuned over a wide range, that is, from NIR (775 nm) to near‐UV (410 nm), simply by changing the halide ion and the stoichiometric ratio between halide ions in the mixed‐halide‐type perovskites. Change of stoichiometry also affects the structural properties and the final film morphology, which in turn influences the radiative and non‐radiative recombination rates of the charge carriers and hence the device performance. Furthermore, we also provide recent developments in PeLEDs based on inorganic perovskite nanocrystals that complement the efforts being made in hybrid PeLEDs.

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Section: Perovskite-based Ledsmentioning

confidence: 99%

Section: Perovskite-based Ledsmentioning

confidence: 99%

Recent Advances in Metal Halide‐Based Perovskite Light‐Emitting Diodes

2017

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“…Organic–inorganic lead halide perovskites have recently been intensively investigated due to their superior optoelectronic and photovoltaic characteristics. Since their pioneering application in solar cells with an efficiency of 3.8% in 2009, researchers have made great efforts to further develop metal halide perovskites in various applications such as field‐effect transistors, solar cells, photodetectors, thermoelectrics, tandem devices, light‐emitting electrochemical cells, diodes, and laser . Despite the rapid growth of the organic–inorganic lead halide perovskite research efforts in both academia and industry, two biggest challenges still remain and hinder their widespread applications.…”

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confidence: 99%

Lead‐Free Double Perovskite Cs₂SnX₆: Facile Solution Synthesis and Excellent Stability

Han

Liang

Yang

et al. 2019

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Long‐term instability and possible lead contamination are the two main issues limiting the widespread application of organic–inorganic lead halide perovskites. Here a facile and efficient solution‐phase method is demonstrated to synthesize lead‐free Cs2SnX6 (X = Br, I) with a well‐defined crystal structure, long‐term stability, and high yield. Based on the systematic experimental data and first‐principle simulation results, Cs2SnX6 displays excellent stability against moisture, light, and high temperature, which can be ascribed to the unique vacancy‐ordered defect‐variant structure, stable chemical compositions with Sn4+, as well as the lower formation enthalpy for Cs2SnX6. Additionally, photodetectors based on Cs2SnI6 are also fabricated, which show excellent performance and stability. This study provides very useful insights into the development of lead‐free double perovskites with high stability.

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“…Poor stability is a major problem which limits the use of CsPbBr 3 quantum dots in different applications. The samples were tested for stability and Figure A presents the temperature‐dependent PL spectra of Ag NP‐doped CsPbBr 3 QD glass and CsPbBr 3 QD powder, measured at an excitation of 400 nm, with a temperature range of 293‐413 K. The powder was prepared by the following method . An equimolar mixture of CsBr and PbBr 2 were dissolved in DMSO solution.…”

Section: Resultsmentioning

confidence: 99%

Silver nanoparticles enhanced luminescence and stability of CsPbBr₃ perovskite quantum dots in borosilicate glass

et al. 2020

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Series of silver nanoparticles (NPs) embedded CsPbBr 3 quantum dots (QDs) glass was synthesized via the melt-quench method. Ag NPs and CsPbBr 3 QDs coexist in the TEM image of the Ag-doped glass sample. Photoluminescence (PL) spectra show that the 0.1 molar ratio Ag 2 O-doped sample had a PL intensity 2.37 times than the undoped sample. This increase is generated by localized surface plasmon resonance coupling between the Ag NPs and CsPbBr 3 QDs. Excessive Ag doping weakens the PL intensity due to spectral self-absorption of the Ag NP surface plasmon resonance (SPR). Self-adsorption of SPR is detrimental to luminescence properties because it increases the amount of photogenerated charge carriers, which proceed through nonradiative relaxation pathways. In addition, stability results of Ag NPdoped-CsPbBr 3 QD glass show that they have excellent stability. This study on Ag NP-doped-CsPbBr 3 QD glass provides a new idea for the future development of perovskite QD optoelectronic devices. K E Y W O R D Sglass, silver/silver compounds, surface How to cite this article: Zhang K, Zhou D, Qiu J, et al. Silver nanoparticles enhanced luminescence and stability of CsPbBr 3 perovskite quantum dots in borosilicate glass.

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Thin film perovskite light-emitting diode based on CsPbBr 3 powders and interfacial engineering

Cited by 113 publications

References 30 publications

Recent Advances in Metal Halide‐Based Perovskite Light‐Emitting Diodes

Recent Advances in Metal Halide‐Based Perovskite Light‐Emitting Diodes

Lead‐Free Double Perovskite Cs₂SnX₆: Facile Solution Synthesis and Excellent Stability

Silver nanoparticles enhanced luminescence and stability of CsPbBr₃ perovskite quantum dots in borosilicate glass

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Thin film perovskite light-emitting diode based on CsPbBr 3 powders and interfacial engineering

Cited by 113 publications

References 30 publications

Recent Advances in Metal Halide‐Based Perovskite Light‐Emitting Diodes

Recent Advances in Metal Halide‐Based Perovskite Light‐Emitting Diodes

Lead‐Free Double Perovskite Cs2SnX6: Facile Solution Synthesis and Excellent Stability

Silver nanoparticles enhanced luminescence and stability of CsPbBr3 perovskite quantum dots in borosilicate glass

Contact Info

Product

Resources

About

Lead‐Free Double Perovskite Cs₂SnX₆: Facile Solution Synthesis and Excellent Stability

Silver nanoparticles enhanced luminescence and stability of CsPbBr₃ perovskite quantum dots in borosilicate glass