Bahtiar, Ayi, and Khairul Habibie. 2020. “THE STABILITY STUDIES OF MIXED HALIDE PEROVSKITE CH3NH3PbBrXI3-X THIN FILMS IN AMBIENT WITH AIR HUMIDITY 70% USING UV-VIS SPECTROSCOPY AND X-RAY DIFFRACTION”. Spektra: Jurnal Fisika Dan Aplikasinya 5 (2):109-18. https://doi.org/10.21009/SPEKTRA.052.03.