Journal
JOURNAL OF MATERIALS CHEMISTRY A
Volume 3, Issue 40, Pages 20352-20358Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5ta06190c
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Funding
- National Research Foundation of Korea - Ministry of Science, ICT & Future Planning [NRF-2014R1A4A1008474]
- National Research Foundation of Korea [2014R1A4A1008474] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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Organic and inorganic hybrid materials of CH3NH3PbX3 with a perovskite crystal structure have been conceived as emerging light absorbing materials for high efficiency photovoltaic devices. Here, we demonstrate the screening effect of polarization states on charge redistribution related to the photovoltaic performance of ferroelectric CH3NH3PbI3 thin films using atomic force microscopy. We show the interplay between polarization and injected charges to have significant effects on charge transfer which potentially influences photovoltaic performance. The obtained results reveal that the direction and the amount of charge transfer can be influenced by the screening of polarization states at the interface. These results could deliver fundamental information regarding the influence of ferroelectricity on CH3NH3PbX3 solar cells.
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