| Autor: |
Barrows, A.T., Lilliu, S., Pearson, A.J., Babonneau, D., Dunbar, A.D.F., Lidzey, D.G. |
| Jazyk: |
angličtina |
| Rok vydání: |
2016 |
| Zdroj: |
'Advanced Functional Materials ', vol: 26, pages: 4934-4942 (2016) |
| ISSN: |
1616-301X |
| Popis: |
Grazing incidence wide and small angle X-ray scattering (GIWAXS and GISAXS) measurements have been used to study the crystallization kinetics of the organolead halide perovskite CH3NH3PbI3-xClx during thermal annealing. In-situ GIWAXS measurements recorded during annealing are used to characterise and quantify the transition from a crystalline precursor to the perovskite structure. In-situ GISAXS measurements indicate an evolution of crystallite sizes during annealing, with the number of crystallites having sizes between 30 and 400 nm increasing through the annealing process. Using ex-situ scanning electron microscopy this evolution in length scales is confirmed and a concurrent increase in film surface coverage is observed, a parameter crucial for efficient solar cell performance. A series of photovoltaic devices are then fabricated in which perovskite films have been annealed for different times, and variations in device performance are explained on the basis of x-ray scattering measurements. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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