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| Content Provider | Royal Society of Chemistry (RSC) |
|---|---|
| Author | Mora-Sero, Ivan Lee, Jin-Wook Bisquert, Juan Mas-Marza, Elena Liu, Linfeng Park, Nam-Gyu Bertoluzzi, Luca Han, Hongwei Sanchez, Rafael S. |
| Copyright Year | 2015 |
| Abstract | Despite the large photovoltaic performance recently achieved, many aspects of the working principles of hybrid organic–inorganic perovskite solar cells remain to be unveiled. We analyze the experimental features observed in the decay of photovoltage and provide an interpretation of the different depolarization regimes at distinct time scales. We introduce an instantaneous relaxation time that shows the type of relaxation for each separate mechanism. The decay of photovoltage is characterized by electronic events at the ms time scale followed by a power law relaxation in the 10–100 s time window. The latter process is associated with the slow dielectric relaxation of CH3NH3PbI3 perovskite and it points to cooperative kinetics of polarization and depolarization of ferroelectric domains. These findings provide an important tool for interpretation of kinetic features in the perovskite ferroic solar cells. |
| Starting Page | 910 |
| Ending Page | 915 |
| Page Count | 6 |
| File Format | HTM / HTML PDF |
| ISSN | 17545692 |
| Volume Number | 8 |
| Issue Number | 3 |
| Journal | Energy & Environmental Science |
| DOI | 10.1039/c4ee03171g |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Access Restriction | Open |
| Subject Keyword | Solar cell Perovskite Depolarization Power law Dielectric Ferroelectricity Ferroics |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Pollution Renewable Energy, Sustainability and the Environment Nuclear Energy and Engineering |
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