Green synthesis of highly stable CsPbBr₃ perovskite nanocrystals using natural deep eutectic solvents as solvents and surface ligands

Abstract

Perovskite nanocrystals (PNCs) have attracted widespread attention as promising materials for the optoelectronic field due to their remarkable photophysical properties and structural tunability. However, their poor stability and the use...

Facile Preparation of CsPbBr3 Nanocrystals/Ethylene Vinyl Acetate Copolymer Composite Films with Long Term Stability and Flexibility for X‐ray Imaging

“…Such a fast decay rate endows the potential utilization in real-time radiation imaging and detection. [34][35][36] Also, the PLQY of CsPbBr 3 NCs was characterized as well and the value reaches as high as 90 %, that is comparable with the earlier reports and indicate its application in x-ray imaging field. [37,38] The fine structure and morphology of as-grown CsPbBr 3 NCs were further characterized by transmission electron microscopy (TEM).…”

“…The PL emission spectra of the bare CsPbBr 3 NCs was then characterized under ultraviolet (UV) lamp with wave length of 365 nm, as shown in Figure 1b, the center of the PL spectra located at about 527 nm with the full width at half maxima (FWHM) of 21 nm, the maximum of absorption peak appears at 460 nm, which matches well with the previously literatures, [31–33] and indicate a band‐edge emission mechanism which result in a short average transient PL decay time ( τ avg ) of 14.19 ns for the CsPbBr 3 , see in Figure S3. Such a fast decay rate endows the potential utilization in real‐time radiation imaging and detection [34–36] . Also, the PLQY of CsPbBr 3 NCs was characterized as well and the value reaches as high as 90 %, that is comparable with the earlier reports and indicate its application in x‐ray imaging field [37,38] .…”

Green solvents, materials, and lead-free semiconductors for sustainable fabrication of perovskite solar cells

“…The use of NADESs resulted in highly stable, bright-luminous NCs with a high photoluminescence quantum yield (PLQY) of approximately 96.8%. 136 ILs are considered promising alternative green solvents to traditional polar aprotic solvents to produce efficient and stable PSCs. Additionally, perovskite lms prepared by ILs do not require antisolvent treatments and lms deposited in ambient environments are more durable, which would simplify the manufacturing of PSCs in an industrial environment.…”

“…The use of NADESs resulted in highly stable, bright-luminous NCs with a high photoluminescence quantum yield (PLQY) of approximately 96.8%. 136 …”

Recent Insights to Prepare High-Quality Perovskite Nanocrystals via “Green” and Ecofriendly Solvents and Capping Agents

“…On the other hand, Zhang and coworkers have proposed for the first time the use of natural deep eutectic solvents (NADESs) during the CsPbBr 3 PNCs synthesis via ligandassisted reprecipitation (LARP) approach [80]. These NADESs are used as solvents for the mixture reaction, and simultaneously as capping agents stabilizing the final PNCs product.…”