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  1. Article ; Online: Pressure-Modulated Interface Engineering toward Realizing Core@Shell Configuration Transition.

    Lv, Pengfei / Zhao, Dianlong / Ma, Zhiwei / Cong, Ming / Sui, Yongming / Xiao, Guanjun / Zou, Bo

    Nano letters

    2023  Volume 23, Issue 24, Page(s) 11982–11988

    Abstract: The strained interface of core@shell nanocrystals (NCs) can effectively modulate the energy level alignment, thereby significantly affecting the optical properties. Herein, the unique photoluminescence (PL) response of doped Mn ions is introduced as a ... ...

    Abstract The strained interface of core@shell nanocrystals (NCs) can effectively modulate the energy level alignment, thereby significantly affecting the optical properties. Herein, the unique photoluminescence (PL) response of doped Mn ions is introduced as a robust probe to detect the targeted pressure-strain relation of CdS@ZnS NCs. Results show that the core experiences actually less pressure than the applied external pressure, attributed to the pressure-induced optimized interface that reduces the compressive strain on core. The pressure difference between core and shell increases the conduction band and valence band offsets and further achieves the core@shell configuration transition from quasi type II to type I. Accordingly, the PL intensity of CdS@ZnS NCs slightly increases, along with a faster blue-shift rate of PL peak under low pressure. This study elucidates the interplay between external physical pressure and interfacial chemical stress for core@shell NCs, leading to precise construction of interface engineering for practical applications.
    Language English
    Publishing date 2023-12-05
    Publishing country United States
    Document type Journal Article
    ISSN 1530-6992
    ISSN (online) 1530-6992
    DOI 10.1021/acs.nanolett.3c04359
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Pressure Regulating Self-Trapped States toward Remarkable Emission Enhancement of Zero-Dimensional Lead-Free Halides Nanocrystals.

    Shi, Yue / Fu, Yuan / Ma, Zhiwei / Zhao, Dianlong / Wang, Kai / Xiao, Guanjun / Zou, Bo

    Small (Weinheim an der Bergstrasse, Germany)

    2023  Volume 19, Issue 21, Page(s) e2300455

    Abstract: Copper(I)-based halides have recently attracted increasing attention as a substitute for lead halides, owing to their nontoxicity, abundance, unique structure, and optoelectric properties. However, exploring an effective strategy to further improve their ...

    Abstract Copper(I)-based halides have recently attracted increasing attention as a substitute for lead halides, owing to their nontoxicity, abundance, unique structure, and optoelectric properties. However, exploring an effective strategy to further improve their optical activities and revealing structure-optical property relationships still remain a great concern. Here, by using high pressure technique, a remarkable enhancement of self-trapped exciton (STE) emission associated with the energy exchange between multiple self-trapped states in zero-dimensional lead-free halide Cs
    Language English
    Publishing date 2023-02-20
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 2168935-0
    ISSN 1613-6829 ; 1613-6810
    ISSN (online) 1613-6829
    ISSN 1613-6810
    DOI 10.1002/smll.202300455
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  3. Article ; Online: Thinking about the Development of High-Pressure Experimental Chemistry.

    Zhao, Dianlong / Wang, Meiyi / Xiao, Guanjun / Zou, Bo

    The journal of physical chemistry letters

    2020  Volume 11, Issue 17, Page(s) 7297–7306

    Abstract: High-pressure chemistry is an interdisciplinary science which uses high-pressure experiments and theories to study the interactions, reactions, and transformations among atoms or molecules. It has been extensively studied thus far and achieved rapid ... ...

    Abstract High-pressure chemistry is an interdisciplinary science which uses high-pressure experiments and theories to study the interactions, reactions, and transformations among atoms or molecules. It has been extensively studied thus far and achieved rapid development over the past decades. However, what is next for high-pressure chemistry? In this Perspective, we mainly focus on the development of high-pressure experimental chemistry from our own viewpoint. An overview of the series of topics is as follows: (I) high pressure used as an effective tool to help resolve scientific disputes regarding phenomena observed under ambient conditions; (II) high-pressure reactions of interest to synthetic chemists; (III) utilizing chemical methods to quench the high-pressure phase; (IV) using high pressure to achieve what chemists want to do but could not do; (V) potential applications of
    Language English
    Publishing date 2020-08-20
    Publishing country United States
    Document type Journal Article
    ISSN 1948-7185
    ISSN (online) 1948-7185
    DOI 10.1021/acs.jpclett.0c02030
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Harvesting Cool Daylight in Hybrid Organic-Inorganic Halides Microtubules through the Reservation of Pressure-Induced Emission.

    Zhao, Dianlong / Xiao, Guanjun / Liu, Zhun / Sui, Laizhi / Yuan, Kaijun / Ma, Zhiwei / Zou, Bo

    Advanced materials (Deerfield Beach, Fla.)

    2021  Volume 33, Issue 31, Page(s) e2100323

    Abstract: Pressure-induced emission (PIE) is extensively studied in halide perovskites or derivative hybrid halides. However, owing to the soft inorganic lattice of these materials, the intense emission is barely retained under ambient conditions, thus largely ... ...

    Abstract Pressure-induced emission (PIE) is extensively studied in halide perovskites or derivative hybrid halides. However, owing to the soft inorganic lattice of these materials, the intense emission is barely retained under ambient conditions, thus largely limiting their practical applications in optoelectronics at atmospheric pressure. Here, remarkably enhanced emission in microtubules of the 0D hybrid halide (C
    Language English
    Publishing date 2021-06-21
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 1474949-X
    ISSN 1521-4095 ; 0935-9648
    ISSN (online) 1521-4095
    ISSN 0935-9648
    DOI 10.1002/adma.202100323
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  5. Article: Pressure-Driven Reverse Intersystem Crossing: New Path toward Bright Deep-Blue Emission of Lead-Free Halide Double Perovskites

    Ma, Zhiwei / Li, Qian / Luo, Jiajun / Li, Shunran / Sui, Laizhi / Zhao, Dianlong / Yuan, Kaijun / Xiao, Guanjun / Tang, Jiang / Quan, Zewei / Zou, Bo

    Journal of the American Chemical Society. 2021 Sept. 10, v. 143, no. 37

    2021  

    Abstract: Maximizing the regeneration of singlet excitons remains a considerable challenge in deep-blue emission systems to obtain low-cost, high-efficiency fluorescent materials. However, the formation of the long-lifetime triplet excitons generally dominates the ...

    Abstract Maximizing the regeneration of singlet excitons remains a considerable challenge in deep-blue emission systems to obtain low-cost, high-efficiency fluorescent materials. However, the formation of the long-lifetime triplet excitons generally dominates the radiative process, making it greatly difficult to harvest deep-blue emission with high color purity because of the depression of singlet excitons. Here, a very bright deep-blue emission in double perovskite Cs₂Na₀.₄Ag₀.₆InCl₆ alloyed with Bi doping (CNAICB) was successfully achieved by pressure-driven reverse intersystem crossing (RISC), an abnormal photophysical process of energy transfer from the excited triplet state back to the singlet. Therein, the inherently broad emission of CNAICB was associated with the self-trapped excitons (STEs) at excited triplet states, whereas the radiative recombination of STEs populated in excited singlet states was responsible for the observed deep-blue emission. Moreover, the deep-blue emission corresponds to Commission Internationale de L’Eclairage (CIE) coordinates (0.16, 0.06) at 5.01 GPa, which meets the requirement of Rec. 2020 display standards. Likewise, pressure was introduced as an efficient tool to rule out the possibility of the recombination of free excitons and clarify the long-standing conventional dispute over the origin of the low-wavelength emission of Cs₂AgInCl₆. Our study not only demonstrates that pressure can be a robust means to boost the deep-blue emission but also provides deep insights into the structure–property relationship of lead-free CNAICB double perovskites.
    Keywords color ; energy transfer ; fluorescence ; structure-activity relationships
    Language English
    Dates of publication 2021-0910
    Size p. 15176-15184.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.1c06207
    Database NAL-Catalogue (AGRICOLA)

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  6. Article: Pressure-Induced Emission (PIE) of One-Dimensional Organic Tin Bromide Perovskites

    Shi, Yue / Ma, Zhiwei / Zhao, Dianlong / Chen, Yaping / Cao, Ye / Wang, Kai / Xiao, Guanjun / Zou, Bo

    Journal of the American Chemical Society. 2019 Apr. 10, v. 141, no. 16

    2019  

    Abstract: Low-dimensional halide perovskites easily suffer from the structural distortion related to significant quantum confinement effects. Organic tin bromide perovskite C4N2H14SnBr4 is a unique one-dimensional (1D) structure in which the edge sharing ... ...

    Abstract Low-dimensional halide perovskites easily suffer from the structural distortion related to significant quantum confinement effects. Organic tin bromide perovskite C4N2H14SnBr4 is a unique one-dimensional (1D) structure in which the edge sharing octahedral tin bromide chains [SnBr42–]∞ are embraced by the organic cations C4N2H142+ to form the bulk assembly of core–shell quantum wires. Some unusual phenomena under high pressure are accordingly expected. Here, an intriguing pressure-induced emission (PIE) in C4N2H14SnBr4 was successfully achieved by means of a diamond anvil cell. The observed PIE is greatly associated with the large distortion of [SnBr6]4– octahedral motifs resulting from a structural phase transition, which can be corroborated by in situ high-pressure photoluminescence, absorption, and angle-dispersive X-ray diffraction spectra. The distorted [SnBr6]4– octahedra would accordingly facilitate the radiative recombination of self-trapped excitons (STEs) by lifting the activation energy of detrapping of self-trapped states. First-principles calculations indicate that the enhanced transition dipole moment and the increased binding energy of STEs are highly responsible for the remarkable PIE. This work will improve the potential applications in the fields of pressure sensors, trademark security, and information storage.
    Keywords X-ray diffraction ; activation energy ; cations ; energy ; information storage ; nanowires ; phase transition ; photoluminescence ; tin
    Language English
    Dates of publication 2019-0410
    Size p. 6504-6508.
    Publishing place American Chemical Society
    Document type Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.9b02568
    Database NAL-Catalogue (AGRICOLA)

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  7. Article ; Online: Pressure-Driven Reverse Intersystem Crossing: New Path toward Bright Deep-Blue Emission of Lead-Free Halide Double Perovskites.

    Ma, Zhiwei / Li, Qian / Luo, Jiajun / Li, Shunran / Sui, Laizhi / Zhao, Dianlong / Yuan, Kaijun / Xiao, Guanjun / Tang, Jiang / Quan, Zewei / Zou, Bo

    Journal of the American Chemical Society

    2021  Volume 143, Issue 37, Page(s) 15176–15184

    Abstract: Maximizing the regeneration of singlet excitons remains a considerable challenge in deep-blue emission systems to obtain low-cost, high-efficiency fluorescent materials. However, the formation of the long-lifetime triplet excitons generally dominates the ...

    Abstract Maximizing the regeneration of singlet excitons remains a considerable challenge in deep-blue emission systems to obtain low-cost, high-efficiency fluorescent materials. However, the formation of the long-lifetime triplet excitons generally dominates the radiative process, making it greatly difficult to harvest deep-blue emission with high color purity because of the depression of singlet excitons. Here, a very bright deep-blue emission in double perovskite Cs
    Language English
    Publishing date 2021-09-10
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.1c06207
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Pressure-Induced Emission (PIE) of One-Dimensional Organic Tin Bromide Perovskites.

    Shi, Yue / Ma, Zhiwei / Zhao, Dianlong / Chen, Yaping / Cao, Ye / Wang, Kai / Xiao, Guanjun / Zou, Bo

    Journal of the American Chemical Society

    2019  Volume 141, Issue 16, Page(s) 6504–6508

    Abstract: Low-dimensional halide perovskites easily suffer from the structural distortion related to significant quantum confinement effects. Organic tin bromide perovskite ... ...

    Abstract Low-dimensional halide perovskites easily suffer from the structural distortion related to significant quantum confinement effects. Organic tin bromide perovskite C
    Language English
    Publishing date 2019-04-12
    Publishing country United States
    Document type Journal Article
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.9b02568
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: Correction to "Pressure-Driven Reverse Intersystem Crossing: New Path toward Bright Deep-Blue Emission of Lead-Free Halide Double Perovskites".

    Ma, Zhiwei / Li, Qian / Luo, Jiajun / Li, Shunran / Sui, Laizhi / Zhao, Dianlong / Yuan, Kaijun / Xiao, Guanjun / Tang, Jiang / Quan, Zewei / Zou, Bo

    Journal of the American Chemical Society

    2021  Volume 143, Issue 45, Page(s) 19240

    Language English
    Publishing date 2021-11-04
    Publishing country United States
    Document type Published Erratum
    ZDB-ID 3155-0
    ISSN 1520-5126 ; 0002-7863
    ISSN (online) 1520-5126
    ISSN 0002-7863
    DOI 10.1021/jacs.1c10468
    Database MEDical Literature Analysis and Retrieval System OnLINE

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