Simple approach for crystallizing growth of MAPbI3 perovskite nanorod without thermal annealing for Next-Generation optoelectronic applications

The crystallization techniques of organic-inorganic hybrid perovskites (OIHP) are considered an effective method for light collector or light emitting applications. In this article, the optical band gap, electron-hole behavior, and energy band alignment are all key optoelectronic properties of crystalline perovskite structures studied in this study. For this reason, a perovskite solution was prepared in a single step and tetrahydrofuran (THF) was used as a solvent to dissolve both perovskite precursors. Rapid crystallization of perovskite in solution was observed, preventing the formation of homogenous perovskite thin films. Subsequently, the effect of THF solvent on the direct crystallization of MAPbI3 perovskite without thermal annealing was investigated. Thermal annealing is considered necessary for perovskite crystal formation as it gives the molecules enough thermal energy to selforganize and form a well-ordered crystalline layer. The procedures that create perovskite crystals without thermal annealing give a novel method for room temperature film preparation (RT) and pave the way for the manufacture of low-cost, stable perovskite solar cells (PSCs). UV-vis absorption/reflectance, photoluminescence, XRD, and SEM were used to explore the effects of this approach on the optical and structural properties of MAPbI3 perovskite thin films.

Automated summary

The crystallization techniques of organic-inorganic hybrid perovskites (OIHP) are effective for light collector or light emitting applications. A perovskite solution was prepared and tetrahydrofuran (THF) was used as a solvent. The rapid crystallization of perovskite in solution was observed, preventing the formation of homogenous thin films. The effects of THF solvent on the direct crystallization of MAPbI3 perovskite were investigated, providing a novel method for room temperature film preparation and potential for the manufacture of low-cost, stable perovskite solar cells.