Science Daily May 16, 2022
The next generation of photovoltaics, semiconductors and LEDs could be made using perovskites. The presence of moisture can lead to defects in the materials, causing them to fall apart more quickly when they’re being used in a device. Researchers in Australia found a simple way to control the growth of phase-pure perovskite crystals by harnessing water as a positive factor by changing the ratio of water to solvent during the early stages of the process, they could choose to grow different types of perovskite crystals, with structures to suit various purposes. They identified that the coordination of lead and bromide ions in the precursor solution was an important factor in determining which types of crystals are formed. They demonstrated that performance of the new product was comparable to the currently used X-ray detectors and far superior to prototype perovskite X-ray detectors developed using slower, more complicated fabrication methods. The methodology is flexible and feasible and doesn’t require a unique environment or technique to apply it. Perovskites created with this method could also be useful in UV light detection, lasers, and solar concentrators. As this mechanism works at room temperature, it is cost effective…read more. TECHNICAL ARTICLEÂ