Month: August 2023

Research Highlights: Controllable Black-to-Yellow Phase Transition by Tuning the Lattice Symmetry in Perovskite Quantum Dots

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The black-to-yellow phase transition in perovskite quantum dots (QDs) is more complex than in bulk perovskites, regarding the role of surface energy in the phase stability of the black phase. Here, we investigate, with the assistance of in situ grazing-incidence wide-angle and small-angle X-ray scattering (GIWAXS/GISAXS), distinct phase behaviors of CsPbI3 QD films under two different temperature profiles – instant heating-up (IHU) and slow heating-up (SHU).… Read More