Growth of centimeter-scale perovskite single-crystalline thin film via surface engineering

摘要

Growth of perovskite SCTF. Schematic diagram of the growth process. The surfaces of two glass substrates are treated to be hydrophobic and put face-to-face to create a confined space. We then keep a constant growth temperature of 80 °C and add the precursor into the gap continuously via capillarity effect to grow the SCTFs. Photograph of a centimeter-scale perovskite SCTF grown inside two hydrophobic substrates. Millimeter-scale single-crystalline flakes grown inside two untreated substrates