A solution-based ALD route towards (CH3NH3)(PbI3) perovskite via lead sulfide films
| Main Authors: | Vanessa M. Koch, Maissa K. S. Barr, Pascal Büttner, Ignacio Minguez-Bacho, Dirk Döhler, Bettina Winzer, Elisabeth Reinhardt, Doris Segets, Julien Bachmann |
|---|---|
| Format: | Article Journal |
| Terbitan: |
, 2019
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| Online Access: |
https://zenodo.org/record/4339885 |
Daftar Isi:
- We present a procedure to grow thin films of lead sulfide (PbS) with ‘solution Atomic Layer Deposition’ (sALD), a technique which transfers the principles of ALD from the gas phase (gALD) to liquid processing. PbS thin films are successfully deposited on planar and porous substrates with a procedure that exhibits the unique ALD characteristics of self-limiting surface chemistry and linear growth at room temperature. The polycrystalline p-type PbS films are stoichiometric and pure. They are converted to the hybrid perovskite methylammonium iodoplumbate (methylammonium lead iodide, MAPI, CH3NH3PbI3) by annealing to 150 °C in the presence of vapors from methylammonium iodide (MAI).