Rapid Growth of Halide Perovskite Single Crystals: From Methods to Optimization Control

Wang, Yuling; Chang, Shuai; Chen, Xiaomei; Ren, Yandong; Shi, Ling‐Feng; Liu, Yonghao; Zhong, Haizheng

doi:10.1002/cjoc.201900071

Cited by 29 publications

(15 citation statements)

References 123 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Solvent evaporation crystallization method based on precipitation of the precursor(s) from solution upon evaporation of solvent, is a common strategy used to fabricate crystalline materials 49,50. Despite the widespread use of this protocol to synthesize lead halide perovskites including both organic–inorganic (i.e., CH 3 NH 3 PbX 3 )51 and all‐inorganic (i.e., CsPbX 3 ) (X = Cl, Br, I)52,53 compounds, to the best of our knowledge, copper based lead‐free perovskites have not yet been fabricated by this technique. Herein, all‐inorganic 0D Cs 3 Cu 2 I 5 crystals were prepared at room temperature by the solvent evaporation crystallization process, using CsI and CuI as precursor materials and DMF as a solvent, as shown in Figure a.…”

Section: Figurementioning

confidence: 99%

Strongly Emissive Lead‐Free 0D Cs₃Cu₂I₅ Perovskites Synthesized by a Room Temperature Solvent Evaporation Crystallization for Down‐Conversion Light‐Emitting Devices and Fluorescent Inks

Zhang

Zhao

Chen

et al. 2020

Advanced Optical Materials

127

106

View full text Add to dashboard Cite

Recently emerged metal halide perovskites have been widely recognized as a promising class of semiconductor materials for next-generation optoelectronic devices, owing to their useful photonic and electronic properties. [1][2][3] Particularly, Lead-free 0D metal halide perovskites are emerging environmentally friendly materials exhibiting large exciton binding energy, which have recently attracted great attention for their excellent light emission properties and favorable stability. Herein, solvent evaporation crystallization at room temperature is adopted to fabricate 0D Cs 3 Cu 2 I 5 perovskite millimeter-sized crystals, which show strong blue photoluminescence (PL) with quantum yield of up to 89%, a large Stockes shift and long (microsecond) PL lifetime, originating from selftrapped excitons. UV pumped light-emitting diodes are demonstrated by using Cs 3 Cu 2 I 5 powder as a solid-state phosphor, and the precursor solution of these perovskite crystals is used as a fluorescent ink. Furthermore, blue-emitting composite Cs 3 Cu 2 I 5 /polyvinylidene fluoride films are produced by spin coating through the solvent evaporation and followed patterning using a direct laser writing technology, which are potentially useful for displays. Finally, the solvent evaporation crystallization method is expanded to fabricate yellow emissive CsCu 2 I 3 crystals by changing the chemical molar ratio of precursor.

show abstract

Section: Figurementioning

confidence: 99%

Strongly Emissive Lead‐Free 0D Cs₃Cu₂I₅ Perovskites Synthesized by a Room Temperature Solvent Evaporation Crystallization for Down‐Conversion Light‐Emitting Devices and Fluorescent Inks

Zhang

Zhao

Chen

et al. 2020

Advanced Optical Materials

127

106

View full text Add to dashboard Cite

show abstract

“…In recent years, with the increasing demand for radiation detection materials in many aspects, researchers have conducted extensive researches on scintillators. Perovskite materials have been proved to be a potential scintillator material due to their excellent properties, [ 163,164 ] but their applications are scarce. Therefore, in this chapter, we mainly summarize the current research challenges and the feasibility analysis for scintillators, and provide a simple outlook for the future development.…”

Section: Challenges and Outlookmentioning

confidence: 99%

Halide Perovskite, a Potential Scintillator for X‐Ray Detection

et al. 2020

View full text Add to dashboard Cite

the coincidence efficiency. This indicates that the solid angle controlled by the PET system and the efficiency of the intrinsic detector are greater. [11,12] More significantly, the Compton events in the pulse height spectrum are mainly caused by scattering in the scintillator. Therefore, these deficiencies can be avoided by lowering the threshold. However, the signal provided by Compton scattering quanta in adjacent crystals may be higher than the threshold, and thus may affect the position resolution and make it worse. In X-ray computed tomography (CT), the body is mainly irradiated continuously from multiple directions by fan-shaped X-rays, while attenuation profiles are recorded, and finally reconstructed from the cross-sectional view of the body. [13] This technology mainly uses complex scanning methods in the field of clinical practice. At present, the realized way of X-rays detector can be roughly divided into two types, direct and indirect. The former one directly absorbs incident X-rays, generates electronic signals through semiconductors or engenders chemical signals through thin films. [14-17] This method can directly convert X-rays into visible light without going through other processes. Therefore, an X-ray detector with a wide linear response range, fast pulse rise time, high-energy resolution, and spatial resolution can be obtained, which makes it copiously applied in X-ray detection. [18-21] However, X-ray detectors based on semiconductors face the challenges of high cost and low efficiency. In addition, although the film is cheap, it is difficult to apply in digital form, which may limit its further development. The latter one refers to the conversion of X-rays (in the highenergy radiation, in addition to X-rays, α, β, and γ rays are also included) into ultraviolet visible (UV) light through scintillators which can be further captured by optical devices. [22-24] It consists of a scintillator and an array photodiode (PD). In contrast, since the scintillator that converts X-rays indirectly is cheap, it is easier to implement in the industry than direct detectors, and has the characteristics of low cost and abundant options, stability, and flexible conversion rate. [25,26] At present, indirect X-ray detectors are widely used in ordinary flat panel X-ray detectors. Moreover, it can be flexibly combined with commercially mature sensor arrays (e.g., amorphous silicon PDs, thin film transistor arrays, photomultiplier tubes, complementary metal oxide semiconductors, silicon avalanche PDs, and X-ray imaging charge-coupled devices [CCD]), therefore, they have attracted more attention. Scintillator is a unique class of luminescent materials, which is extensively used in many fields such as nondestructive testing, medical imaging, space probes, etc. Compared with the disadvantages of traditional scintillator materials which have high cost, are fragile, have long response time and low spatial resolution disadvantages, metal halide perovskites are considered to be the most potential scintillator materials in ...

show abstract

“…[ 1 ] Due to their unique optoelectronic properties such as long charge carrier lifetime, [ 2 ] high absorption coefficient, [ 3 ] high charge carrier mobility, [ 4‐5 ] and flexible band structure engineering, [ 6‐7 ] along with their low processing cost, [ 8 ] the halide perovskite materials are promising candidates for highly efficient and cost‐competitive solar conversion devices. [ 9 ] More recently, it has been reported that the halide perovskite materials show unique activities in the photocatalytic conversion of multiple chemicals. [ 10 ]…”

Section: Background and Originality Contentmentioning

confidence: 99%

Heterojunction‐Type Photocatalytic System Based on Inorganic Halide Perovskite CsPbBr₃^†

et al. 2020

View full text Add to dashboard Cite

of main observation and conclusion The heterojunction-type structure has shown significant merits in tuning the optical properties and carrier physics. Inspired by the excellent absorption capability of halide perovskite materials for visible light, a series of CsPbBr3/TiO2 heterojunction-type photocatalysts with various all-inorganic-perovskite/TiO2 ratios are successfully fabricated by the ligand-assisted reprecipitation (LARP) method. The heterojunction structure extends the light absorption of TiO2 with good chemical and structural stability. A Pb-O interaction at the CsPbBr3/TiO2 interface is observed by the XPS and confirmed by the TRPL showing improved interface carrier transport and stability. The heterojunction-type catalyst shows drastically enhanced photocatalytic activity towards the direct oxidation of toluene with O2 molecule, as an important reaction for organic chemical synthesis. The optimized sample shows an activity of 2356 μmol•g-1 •h-1 at 75 °C, 4 times of that of the naked CsPbBr3 nanocrystals, and 3 times of that of the bare TiO2. Based on the investigation with trapping agents, a reaction mechanism is hence proposed suggesting that the photo-generated hole may be involved in the rate-limiting step. This work demonstrates the potential of inorganic halide perovskite-based heterojunction structure for photocatalytic applications.

show abstract

Rapid Growth of Halide Perovskite Single Crystals: From Methods to Optimization Control

Cited by 29 publications

References 123 publications

Strongly Emissive Lead‐Free 0D Cs₃Cu₂I₅ Perovskites Synthesized by a Room Temperature Solvent Evaporation Crystallization for Down‐Conversion Light‐Emitting Devices and Fluorescent Inks

Strongly Emissive Lead‐Free 0D Cs₃Cu₂I₅ Perovskites Synthesized by a Room Temperature Solvent Evaporation Crystallization for Down‐Conversion Light‐Emitting Devices and Fluorescent Inks

Halide Perovskite, a Potential Scintillator for X‐Ray Detection

Heterojunction‐Type Photocatalytic System Based on Inorganic Halide Perovskite CsPbBr₃^†

Contact Info

Product

Resources

About

Rapid Growth of Halide Perovskite Single Crystals: From Methods to Optimization Control

Cited by 29 publications

References 123 publications

Strongly Emissive Lead‐Free 0D Cs3Cu2I5 Perovskites Synthesized by a Room Temperature Solvent Evaporation Crystallization for Down‐Conversion Light‐Emitting Devices and Fluorescent Inks

Strongly Emissive Lead‐Free 0D Cs3Cu2I5 Perovskites Synthesized by a Room Temperature Solvent Evaporation Crystallization for Down‐Conversion Light‐Emitting Devices and Fluorescent Inks

Halide Perovskite, a Potential Scintillator for X‐Ray Detection

Heterojunction‐Type Photocatalytic System Based on Inorganic Halide Perovskite CsPbBr3†

Contact Info

Product

Resources

About

Strongly Emissive Lead‐Free 0D Cs₃Cu₂I₅ Perovskites Synthesized by a Room Temperature Solvent Evaporation Crystallization for Down‐Conversion Light‐Emitting Devices and Fluorescent Inks

Strongly Emissive Lead‐Free 0D Cs₃Cu₂I₅ Perovskites Synthesized by a Room Temperature Solvent Evaporation Crystallization for Down‐Conversion Light‐Emitting Devices and Fluorescent Inks

Heterojunction‐Type Photocatalytic System Based on Inorganic Halide Perovskite CsPbBr₃^†