Intrinsic Formamidinium Tin Iodide Nanocrystals by Suppressing the Sn(IV) Impurities - Dirin, Dmitry N.; Vivani, Anna; Zacharias, Marios; Sekh, Taras V.; Cherniukh, Ihor; Yakunin, Sergii; Bertolotti, Federica; Aebli, Marcel; Schaller, Richard D.; Wieczorek, Alexander; Siol, Sebastian; Cancellieri, Claudia; et al. (NANO LETTERS, 2023)