| AVS 66th International Symposium & Exhibition | |
| Thin Films Division | Thursday Sessions |
| Session TF+SS-ThA |
| Session: | Metal Halide Perovskites, Other Organic/Inorganic Hybrid Thin Films |
| Presenter: | Qing Peng, University of Alabama |
| Authors: | Q. Peng, University of Alabama X. Yu, University of Alabama H. Yan, University of Alabama |
| Correspondent: | Click to Email |
Surface site-limited reaction is critical to modifying hybrid halide perovskites without destroying their bulk properties. However, no surface site-limited reaction on hybrid halide perovskites has been demonstrated and confirmed. Herein, we report one surface-site limited reaction on FA lead iodide with tri-methyl aluminum. The strong coordination between organic cations FA+and trimethyl aluminum, a very strong Lewis acid, is found to be the key for this self-limited reaction behavior. Our results provide a model system to understand the effect of surface species on surface reaction behavior on hybrid halide perovskites.