Transition metal(<scp>ii</scp>) ion doping of CsPb2Br5/CsPbBr3 perovskite nanocrystals enables high luminescence efficiency and stability

Deng, Jidong; Cui, Yuhang; Jiang, Zhonghao; Du, Ruo‐Lan; Yang, Li; Zhang, Xiaoli; He, Rongxing; Zhang, Jinbao

doi:10.1039/d2tc03300c

Cited by 8 publications

(7 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Consequently, Cr 3+ ion doping may result in novel doped organic metal halide perovskite rod-shaped nanocrystals with slightly altered lattice parameters and a retained cubic phase [138]. Deng et al developed a simple low-temperature method to synthesize CsPb 2 Br 5 /CsPbBr 3 PNCs doped with different transition metal (II) ions (Ni 2+ , Cu 2+ , and Zn 2+ ) [139]. This metal site doping strategy effectively eliminates bromine vacancies and suppresses nonradiative recombination.…”

Section: Metal Cation Dopantsmentioning

confidence: 99%

“…This metal site doping strategy effectively eliminates bromine vacancies and suppresses nonradiative recombination. As a result, these transition metal (II)-doped CsPb 2 Br 5 /CsPbBr 3 perovskite nanocrystals exhibited a higher PLQY than undoped nanocrystals [139]. Films based on Ni 2+ -doped nanocrystals demonstrated significant water stability (60 days), whereas Cu 2+doped nanocrystals exhibited outstanding thermal stability (up to 150 • C).…”

Section: Metal Cation Dopantsmentioning

confidence: 99%

See 1 more Smart Citation

Advancements in Perovskite Nanocrystal Stability Enhancement: A Comprehensive Review

Liu

Lee

2023

Nanomaterials

View full text Add to dashboard Cite

Over the past decade, perovskite technology has been increasingly applied in solar cells, nanocrystals, and light-emitting diodes (LEDs). Perovskite nanocrystals (PNCs) have attracted significant interest in the field of optoelectronics owing to their exceptional optoelectronic properties. Compared with other common nanocrystal materials, perovskite nanomaterials have many advantages, such as high absorption coefficients and tunable bandgaps. Owing to their rapid development in efficiency and huge potential, perovskite materials are considered the future of photovoltaics. Among different types of PNCs, CsPbBr3 perovskites exhibit several advantages. CsPbBr3 nanocrystals offer a combination of enhanced stability, high photoluminescence quantum yield, narrow emission bandwidth, tunable bandgap, and ease of synthesis, which distinguish them from other PNCs, and make them suitable for various applications in optoelectronics and photonics. However, PNCs also have some shortcomings: they are highly susceptible to degradation caused by environmental factors, such as moisture, oxygen, and light, which limits their long-term performance and hinders their practical applications. Recently, researchers have focused on improving the stability of PNCs, starting with the synthesis of nanocrystals and optimizing (i) the external encapsulation of crystals, (ii) ligands used for the separation and purification of nanocrystals, and (iii) initial synthesis methods or material doping. In this review, we discuss in detail the factors leading to instability in PNCs, introduce stability enhancement methods for mainly inorganic PNCs mentioned above, and provide a summary of these approaches.

show abstract

Section: Metal Cation Dopantsmentioning

confidence: 99%

Section: Metal Cation Dopantsmentioning

confidence: 99%

Advancements in Perovskite Nanocrystal Stability Enhancement: A Comprehensive Review

Liu

Lee

2023

Nanomaterials

View full text Add to dashboard Cite

show abstract

“…In view of weak metal halogen bonding interaction in susceptible halide perovskite, a second method to enhance water-resistance method involves doping with heterometals to increase the formation energy and withstand the effects of water, such as Mn 2+ , Yb 2+ , Sr 2+ , Cu 2+ , and Ni 2+ . [5,34,39] This metal doping strategy effectively increases the endurance ability toward water, but unavoidably damages the luminescent performance of perovskites. Overall, although these post-synthetic modifications delay the decomposition process of perovskite materials to a certain degree, the intrinsic structural and luminescent stability remain unsettled, and developing intrinsically waterproof halide perovskites at the molecular level is a significant challenge.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Water‐Stability of 1D Hybrid Manganese Halides by a Cationic Engineering Strategy

Kong,

Wu,

Yang

et al. 2024

Advanced Optical Materials

View full text Add to dashboard Cite

Although the luminescent performance of organic–inorganic metal halides (OIMHs) have obtained significant advances, achieving intrinsic water‐stable OIMHs remain a substantial challenge due to the fragile ionic nature of hybrid the halide structure. To overcome these challenges, a structural design strategy is proposed that involves the use of highly hydrophobic cations as a protective layer to improve the water stability of OIMH. Herein, an aprotic trimethylsulfoxonium [TMSO]+ is selected as a hydrophobic cation and successfully assemble two new manganese based OIMHs of (TMSO)MnCl3 and (TMSO)MnBr3 through facile solid and liquid phase reaction methods. Remarkably, these halides exhibit strong red light emissions with high quantum yields recorded at 86.1% and 53.4%, respectively, originating from the octahedral [MnX6]4− based one‐dimensional (1D) [MnX3]− chain. Most significantly, these halides present extraordinary structural and luminescent stabilities toward continuous corrosion by humid air, water, and acid‐aqueous solution for more than one month, suggesting promising application prospects in extreme chemical environments. In‐depth Hirshfeld surface calculations demonstrate that the ultrahigh water‐stability benefits from the abundant hydrogen bonds and strong electrostatic interactions between [TMSO]+ and [MnX3]− ions, which provides an underlying insight into the stability mechanism. This water‐stability enhancement strategy represents a breakthrough structural engineering to rationally design more water‐stable OIMH.

show abstract

“…In recent years, the growing concern over the depletion of conventional energy resources has driven scientists to seek alternative energy sources. Inorganic perovskite nanocrystals, specifically CsPbX3 (where X can be Cl, Br, or I), show great potential for use in luminescent lighting applications due to their impressive photoluminescence quantum yield, narrow emission spectra, and environmentally friendly raw materials [1][2][3][4]. However, stability remains challenging for applying mixed CsPbX3 (where X can be Cl, Br, or I) perovskite nanocrystals [5][6].…”

Section: Introductionmentioning

confidence: 99%

Preparation and fluorescence properties of SiO₂-coated CsPbBrI₂ perovskite nanocrystals

Ma,

Zhang,

2023

J. Phys.: Conf. Ser.

View full text Add to dashboard Cite

All-inorganic perovskite nanocrystals CsPbX3 (X=Cl, Br, I) have garnered significant interest due to their promising applications and have become a leading research subject in the field of optoelectronics. The weak stability of CsPbBrI2 perovskite nanocrystals has hindered their development, however, silica coating can effectively solve this problem. The (3-aminopropyl) triethoxysilane was used as a raw material for silica synthesis to form core-shell structured CsPbBrI2@SiO2 perovskite nanocrystals to obtain enhanced optoelectronic properties. This article reveals the narrow absorption and emission peaks, small half-height widths, 14.6 ns fluorescence lifetimes, and 106.2 meV exciton binding energies of CsPbBrI2@SiO2 perovskite nanocrystals. The results show that the core-shell structured CsPbBrI2@SiO2 perovskite nanocrystals prepared by this method have excellent fluorescence spectral properties and hold significant promise for future applications in optoelectronic devices.

show abstract

Transition metal(ii) ion doping of CsPb₂Br₅/CsPbBr₃ perovskite nanocrystals enables high luminescence efficiency and stability

Abstract: All-inorganic cesium lead halide perovskite nanocrystals (NCs) have emerged as promising optoelectronic nanomaterials due to their color-tunable and high photoluminescence quantum yield (PLQY). However, poor stability of perovskite NCs in...

Cited by 8 publications

References 34 publications

Advancements in Perovskite Nanocrystal Stability Enhancement: A Comprehensive Review

Advancements in Perovskite Nanocrystal Stability Enhancement: A Comprehensive Review

Enhancing the Water‐Stability of 1D Hybrid Manganese Halides by a Cationic Engineering Strategy

Preparation and fluorescence properties of SiO₂-coated CsPbBrI₂ perovskite nanocrystals

Contact Info

Product

Resources

About

Transition metal(ii) ion doping of CsPb2Br5/CsPbBr3 perovskite nanocrystals enables high luminescence efficiency and stability

Abstract: All-inorganic cesium lead halide perovskite nanocrystals (NCs) have emerged as promising optoelectronic nanomaterials due to their color-tunable and high photoluminescence quantum yield (PLQY). However, poor stability of perovskite NCs in...

Cited by 8 publications

References 34 publications

Advancements in Perovskite Nanocrystal Stability Enhancement: A Comprehensive Review

Advancements in Perovskite Nanocrystal Stability Enhancement: A Comprehensive Review

Enhancing the Water‐Stability of 1D Hybrid Manganese Halides by a Cationic Engineering Strategy

Preparation and fluorescence properties of SiO2-coated CsPbBrI2 perovskite nanocrystals

Contact Info

Product

Resources

About

Transition metal(ii) ion doping of CsPb₂Br₅/CsPbBr₃ perovskite nanocrystals enables high luminescence efficiency and stability

Preparation and fluorescence properties of SiO₂-coated CsPbBrI₂ perovskite nanocrystals