Melt-Processed Halide Perovskite Thin Films from a Two-Dimensional Ruddlesden–Popper Phase Precursor
Journal Article
·
· Journal of Physical Chemistry Letters
- Iowa State University, Ames, IA (United States)
- Ames Laboratory (AMES), Ames, IA (United States)
- Ames Laboratory, and Iowa State University, Ames, IA (United States)
While halide perovskite thin films have enormous potential for photovoltaics and other optoelectronics, the use of environmentally hazardous solvents during their deposition and processing poses a barrier to their commercialization. In this work, we demonstrated the deposition of melt-processable precursors and subsequent transformation into halide perovskite thin films without using environmentally hazardous solvents. We melted the wide-bandgap layered perovskites [(C6H5CH(CH3)CH2NH3)2PbI4:β-Me-PEA2PbI4] at ~210 °C and blade coated them into films. The β-Me-PEA2PbI4 films were subsequently transformed to perovskite-phase methylammonium or formamidinium lead iodide films using a cation-exchange process in an alcohol-based solvent. Lastly, we demonstrate the potential and limitations of a completely solvent-free approach that uses solid-state transformation of a β-Me-PEA2PbI4 film. As a result, this work represents a substantial step toward eliminating environmentally hazardous solvents and enables inexpensive industrial-scale liquid-phase deposition processes that do not require expensive systems for handling and disposing of environmentally hazardous solvents.
- Research Organization:
- Ames Laboratory (AMES), Ames, IA (United States)
- Sponsoring Organization:
- National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR); USDOE Office of Science (SC)
- Grant/Contract Number:
- AC02-07CH11358
- OSTI ID:
- 1999366
- Report Number(s):
- IS-J--11,092
- Journal Information:
- Journal of Physical Chemistry Letters, Journal Name: Journal of Physical Chemistry Letters Journal Issue: 22 Vol. 14; ISSN 1948-7185
- Publisher:
- American Chemical SocietyCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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