considered to resolve this, and various methods have been attempted, ranging from printing patterns with stamps to the use of lasers and inkjets. [16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31][32][33] These methods are presented in Figure 1.In this article, we describe the perovskite patterning method, in two sections. In the first section, we briefly introduce the traditional perovskite patterning method employing PRs. In the second section, we introduce a perovskite patterning method that uses a template [and not a PR]: the so-called template-assisted non-PR lithography patterning method. In the third section, we present the current state-of-the-art methods: direct patterning (e.g., laser printing) and inkjet printing. Finally, we suggest a route toward direct optical perovskite patterning research.

Because of their superior optical, and electrical properties, lead halide perovskites have emerged as potential materials for light-emitting-diodes. However, some obstacles have yet to be overcome for practical applications including low exciton binding energy, the difficulty of fabricating uniform perovskite films,, and their instability to heat, light, and moisture. In this review, we focus on strategies to improve the lifetime, and stability of perovskites such as core-shell structure, ligand exchange, and doping.

The demand for sensors in various fields, such as medicine and materials, has increased. Owing to the recent development of flexible material technology, materials that can be attached to the body are also being developed. Five senses sensors that can replace the five senses of humans are worth investigating. Halide perovskite has excellent optoelectrical properties such as tunable bandgap, long carrier diffusion length, and high photoluminescence quantum yield. However, it has characteristics that are vulnerable to various external factors such as water, light, and gas. As a result, it is considered a material suitable for application to sensors. This study examines the research trends of halide perovskites to develop vision, olfactory, tactile, taste, and auditory sensors. Although studies have been conducted on the application of perovskite oxides in areas such as gas sensors, little research has been conducted in areas such as magnetic sensors. The feasibility of implementing the five senses sensor is addressed by conducting extensive research on these sensors.

This article shows the results of fabricating a device through vacuum deposition by synthesizing a perovskite thin film in powder form. A light emitting diodes (LEDs) were fabricated using a...

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