Patterning of perovskite–polymer films by wrinkling instabilities

Abstract

Organic-inorganic perovskites are semiconductors used for applications in optoelectronics and photovoltaics. Micron and submicron perovskite patterns have been explored in semitransparent photovoltaic and lasing applications. In this work, we show that a polymeric medium can be used to create a patterned perovskite, by using a novel and inexpensive approach.

Modifying morphology and defects of low-dimensional, semi-transparent perovskite thin films via solvent type

“…The wrinkling arose from the isotropic compressive stress during the formation of intermediate phases and relaxation and due to a minimum total energy. 45,46 Overall, the low dimensional perovskites from DD82 possessed smoother and denser morphologies with higher crystallinity, properties necessary for high performance optoelectronics.…”

Rapid hybrid perovskite film crystallization from solution

“…However, other complex phenomena arise for solution processes due to the interaction of the solvents and precursors as reactant materials. 204,205 Fig. 11 4.3.2.…”

From Exceptional Properties to Stability Challenges of Perovskite Solar Cells

“…Copyright 2018, Wiley‐VCH, f) SEM images of a section of a polyethylene glycol diacrylate (PEGDA) wrinkled thin film (20 vol% PEGDA/toluene, spin coated at 6000 rpm) showing the thickness of the polymer layer and the morphology of the wrinkles. Reproduced with permission . Copyright 2018, Royal Society of Chemistry.…”

“…These results reveal that organic–inorganic perovskites have a large potential to use in a number of optoelectronic applications. Thus, micrometer and submicrometer patterning of perovskite–polymer films can be explored in semitransparent PV and for the preparation of optical cavities to enhance light amplification in lasing applications (see Figure f) …”