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Large-Size CH3NH3PbBr3 Single Crystal: Growth and In Situ Characterization of the Photophysics Properties
journal contribution
posted on 2015-12-17, 08:34 authored by Pengjun Zhao, Jinbao Xu, Xiaoyu Dong, Lei Wang, Wei Ren, Liang Bian, Aimin ChangWe reported a facile single-solution
fabrication method to grow
large-scale CH3NH3PbBr3 hybrid perovskite
single crystal at room temperature. The obtained single crystal in
this experiment was 14 × 14 mm. The sample’s in situ photophysics
properties under dark and illumination, including the surface morphology,
work function, surface current distribution, microcosmic I–V curves, as well as the polarization behavior,
were in situ characterized by integrated utilization of a scanning
probe microscopy, respectively. Piezoresponse force microscopy (PFM)
phase angles indicated the existence of “polarization”
in CH3NH3PbBr3 lattice. Interestingly,
the “polarization effect” was enhanced by the plus light
source. Moreover, a surface potential shift as large as 200 mV was
observed under the condition of the illumination on and off. This
research is proposed to provide an opportunity to take a fresh look
at the architectural design and photovoltaic performance origin of
the hybrid perovskite solar cells.
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PFM200 mVsurface morphologyilluminationphotophysics propertiesperovskitephase anglesroom temperaturepolarization behaviorlight sourceSitu CharacterizationPiezoresponse force microscopywork functionCH 3NHscanning probe microscopyCH 3NH latticephotovoltaic performance originPhotophysics PropertiesWecrystal
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