A slight trend is observed toward higher diffusion lengths with increasing temperature and RH from 40 nm at 80 °C/0% RH to 55 nm at 120 °C/0% RH and 70 nm at 120 °C/70% RH, as shown in Figure 5 c.
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Solution-Processed BiI<sub>3</sub> Films with 1.1 eV Quasi-Fermi Level Splitting: The Role of Water, Temperature, and Solvent during Processing.
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