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  1. Article ; Online: Two-Dimensional Hybrid Perovskite with High-Sensitivity Optical Thermometry Sensors.

    Guan, Mengyu / Hao, Jiarui / Qiu, Lei / Molokeev, Maxim S / Ning, Lixin / Dai, Zhigao / Li, Guogang

    Inorganic chemistry

    2024  Volume 63, Issue 8, Page(s) 3835–3842

    Abstract: Optical thermometry has gained significant attention due to its remarkable sensitivity and noninvasive, rapid response to temperature changes. However, achieving both high absolute and relative temperature sensitivity in two-dimensional perovskites ... ...

    Abstract Optical thermometry has gained significant attention due to its remarkable sensitivity and noninvasive, rapid response to temperature changes. However, achieving both high absolute and relative temperature sensitivity in two-dimensional perovskites presents a substantial challenge. Here, we propose a novel approach to address this issue by designing and synthesizing a new narrow-band blue light-emitting two-dimensional perovskite named (C
    Language English
    Publishing date 2024-02-13
    Publishing country United States
    Document type Journal Article
    ZDB-ID 1484438-2
    ISSN 1520-510X ; 0020-1669
    ISSN (online) 1520-510X
    ISSN 0020-1669
    DOI 10.1021/acs.inorgchem.3c04140
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article: Surface polarization-induced emission and stability enhancement of CsPbX

    Chen, Keqiang / Gu, Zixin / Wang, Zhiqing / Guan, Mengyu / Tan, Xiu / Xu, Wanqing / Ji, Xinyu / Lu, Weiqi / Liu, Yueli / Li, Guogang

    Chemical science

    2023  Volume 14, Issue 33, Page(s) 8914–8923

    Abstract: Recently, the polarization effect has been receiving tremendous attention, as it can result in improved stability and charge transfer efficiency of metal-halide perovskites (MHPs). However, realizing the polarization effect on ... ...

    Abstract Recently, the polarization effect has been receiving tremendous attention, as it can result in improved stability and charge transfer efficiency of metal-halide perovskites (MHPs). However, realizing the polarization effect on CsPbX
    Language English
    Publishing date 2023-07-27
    Publishing country England
    Document type Journal Article
    ZDB-ID 2559110-1
    ISSN 2041-6539 ; 2041-6520
    ISSN (online) 2041-6539
    ISSN 2041-6520
    DOI 10.1039/d3sc02109b
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Moisture-Tailored 2D Dion-Jacobson Perovskites for Reconfigurable Optoelectronics.

    Guan, Mengyu / Xie, Yunlong / Zhang, Yang / Gu, Zixin / Qiu, Lei / He, Zhuojie / Ye, Bingkun / Suwardi, Ady / Dai, Zhigao / Li, Guogang / Hu, Guangwei

    Advanced materials (Deerfield Beach, Fla.)

    2023  Volume 35, Issue 22, Page(s) e2210611

    Abstract: Humidity- and moisture-induced degradation has been a longstanding problem in perovskite materials, affecting their long-term stability during applications. Counterintuitively, the moisture is leveraged to tailor the reversible hydrochromic behaviors of ... ...

    Abstract Humidity- and moisture-induced degradation has been a longstanding problem in perovskite materials, affecting their long-term stability during applications. Counterintuitively, the moisture is leveraged to tailor the reversible hydrochromic behaviors of a new series of 2D Dion-Jacobson (DJ) perovskites for reconfigurable optoelectronics. In particular, the hydrogen bonds between organic cations and water molecules can be dynamically modulated via moisture removal/exposure. Remarkably, such modulation confines the movement of the organic cations close to the original position, preventing their escape from crystal lattices. Furthermore, this mechanism is elucidated by theoretical analysis using first-principles calculations and confirmed with the experimental characterizations. The reversible fluorescent transition 2D DJ perovskites show excellent cyclical properties, presenting untapped opportunities for reconfigurable optoelectronic applications. As a proof-of-concept demonstration, an anti-counterfeiting display is shown based on patterned reversible 2D DJ perovskites. The results represent a new avenue of reconfigurable optoelectronic application with 2D DJ perovskites for humidity detection, anti-counterfeiting, sensing, and other emerging photoelectric intelligent technologies.
    Language English
    Publishing date 2023-04-14
    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.202210611
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Interfacial engineering of halide perovskites and two-dimensional materials.

    Qiu, Lei / Si, Guangyuan / Bao, Xiaozhi / Liu, Jun / Guan, Mengyu / Wu, Yiwen / Qi, Xiang / Xing, Guichuan / Dai, Zhigao / Bao, Qiaoliang / Li, Guogang

    Chemical Society reviews

    2022  

    Abstract: Recently, halide perovskites (HPs) and layered two-dimensional (2D) materials have received significant attention from industry and academia alike. HPs are emerging materials that have exciting photoelectric properties, such as a high absorption ... ...

    Abstract Recently, halide perovskites (HPs) and layered two-dimensional (2D) materials have received significant attention from industry and academia alike. HPs are emerging materials that have exciting photoelectric properties, such as a high absorption coefficient, rapid carrier mobility and high photoluminescence quantum yields, making them excellent candidates for various optoelectronic applications. 2D materials possess confined carrier mobility in 2D planes and are widely employed in nanostructures to achieve interfacial modification. HP/2D material interfaces could potentially reveal unprecedented interfacial properties, including light absorbance with desired spectral overlap, tunable carrier dynamics and modified stability, which may lead to several practical applications. In this review, we attempt to provide a comprehensive perspective on the development of interfacial engineering of HP/2D material interfaces. Specifically, we highlight the recent progress in HP/2D material interfaces considering their architectures, electronic energetics tuning and interfacial properties, discuss the potential applications of these interfaces and analyze the challenges and future research directions of interfacial engineering of HP/2D material interfaces. This review links the fields of HPs and 2D materials through interfacial engineering to provide insights into future innovations and their great potential applications in optoelectronic devices.
    Language English
    Publishing date 2022-12-05
    Publishing country England
    Document type Journal Article ; Review
    ZDB-ID 1472875-8
    ISSN 1460-4744 ; 0306-0012
    ISSN (online) 1460-4744
    ISSN 0306-0012
    DOI 10.1039/d2cs00218c
    Database MEDical Literature Analysis and Retrieval System OnLINE

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