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    Photostriction of CH3NH3PbBr3 Perovskite Crystals

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    Type
    Article
    Authors
    Wei, Tzu-Chiao
    Wang, Hsin-Ping
    Li, Ting-You cc
    Lin, Chun-Ho
    Hsieh, Ying-Hui
    Chu, Ying-Hao cc
    He, Jr-Hau cc
    KAUST Department
    Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division
    Electrical Engineering Program
    KAUST Solar Center (KSC)
    KAUST Grant Number
    OSR-2016-CRG5-3005
    FCC/1/3079-08-01
    Date
    2017-07-17
    Online Publication Date
    2017-07-17
    Print Publication Date
    2017-09
    Permanent link to this record
    http://hdl.handle.net/10754/625688
    
    Metadata
    Show full item record
    Abstract
    Organic-inorganic hybrid perovskite materials exhibit a variety of physical properties. Pronounced coupling between phonon, organic cations, and the inorganic framework suggest that these materials exhibit strong light-matter interactions. The photoinduced strain of CH3 NH3 PbBr3 is investigated using high-resolution and contactless in situ Raman spectroscopy. Under illumination, the material exhibits large blue shifts in its Raman spectra that indicate significant structural deformations (i.e., photostriction). From these shifts, the photostrictive coefficient of CH3 NH3 PbBr3 is calculated as 2.08 × 10-8 m2 W-1 at room temperature under visible light illumination. The significant photostriction of CH3 NH3 PbBr3 is attributed to a combination of the photovoltaic effect and translational symmetry loss of the molecular configuration via strong translation-rotation coupling. Unlike CH3 NH3 PbI3 , it is noted that the photostriction of CH3 NH3 PbBr3 is extremely stable, demonstrating no signs of optical decay for at least 30 d. These results suggest the potential of CH3 NH3 PbBr3 for applications in next-generation optical micro-electromechanical devices.
    Citation
    Wei T-C, Wang H-P, Li T-Y, Lin C-H, Hsieh Y-H, et al. (2017) Photostriction of CH3 NH3 PbBr3 Perovskite Crystals. Advanced Materials 29: 1701789. Available: http://dx.doi.org/10.1002/adma.201701789.
    Sponsors
    This work was financially supported by the King Abdullah University of Science and Technology (KAUST) Office of Sponsored Research (OSR) (OSR-2016-CRG5-3005), the KAUST solar center (FCC/1/3079-08-01), and the KAUST baseline funding. The authors are especially grateful to Ching-Cheng Chuang and Chia-Yen Lee from the Institute of Biomedical Engineering, National Chiao Tung University and the Department of Electrical Engineering, National United University for their contribution in the noncontact temperature measurements.
    Publisher
    Wiley
    Journal
    Advanced Materials
    DOI
    10.1002/adma.201701789
    PubMed ID
    28715093
    Additional Links
    http://onlinelibrary.wiley.com/doi/10.1002/adma.201701789/full
    ae974a485f413a2113503eed53cd6c53
    10.1002/adma.201701789
    Scopus Count
    Collections
    Articles; Electrical and Computer Engineering Program; KAUST Solar Center (KSC); Computer, Electrical and Mathematical Science and Engineering (CEMSE) Division

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