Antisolvent processing of lead halide perovskite thin films studied by in situ X-ray diffraction
- SLAC National Accelerator Lab., Menlo Park, CA (United States)
Here, whe conversion mechanism from the precursor ink to the perovskite film using antisolvent-induced crystallization has been studied using in situ X-ray diffraction during blade coating and antisolvent deposition. We study various solvent systems forming methylammonium lead iodide perovskite. We find that it is critical to add the antisolvent before the formation of a crystalline intermediate phase. Compared to thermal crystallization, the antisolvent-induced crystallization alters the conversion route. Instead of heterogeneous nucleation and conversion through a crystalline intermediate phase, antisolvent-assisted annealing leads to a rapid direct crystallization, resulting in highly regular smooth films.
- Research Organization:
- SLAC National Accelerator Laboratory (SLAC), Menlo Park, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- ECCS-1542152; AC02-76SF00515
- OSTI ID:
- 1490882
- Alternate ID(s):
- OSTI ID: 1474756; OSTI ID: 1491404
- Journal Information:
- Journal of Materials Chemistry. A, Vol. 6, Issue 39; ISSN 2050-7488
- Publisher:
- Royal Society of ChemistryCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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