Renewable energy harvesting technologies, which convert ambient resources such as wind into electrical energy, have attracted significant attention as sustainable power sources for self-powered systems. However, the long-term applicability of wind energy harvesters in remote or extreme environments has not yet been fully discussed, particularly in terms of structural robustness and environmental adaptability. In this study, we designed a double-clamped flutter-type triboelectric generator (DFTEG) for efficient wind energy harvesting and evaluated its output performance under various simulated outdoor conditions. The DFTEG features a modular acrylic frame with a magnet-based assembly for easy maintenance and film replacement, utilizing PTFE films and aluminum electrodes to maximize the charge density difference according to the triboelectric series. Structural optimization revealed that a single-film configuration with a length of 110 mm produced the most stable flutter vibration and a large effective contact area, achieving a maximum open-circuit voltage of 42.28 V and a short-circuit current of 2.89 μA. Furthermore, performance evaluations under various environmental variables, including relative humidity, temperature, and sand particles interference, confirmed consistent electrical output across diverse environmental conditions. These results demonstrate the potential of the proposed DFTEG as an environmentadaptive independent power source capable of stable operation under complex environmental factors.

Metal halide perovskite materials have emerged as promising candidates for next-generation optoelectronic applications owing to their outstanding optical properties and tunable emission characteristics. However, their practical application is hindered by poor environmental stability, especially under conditions of heat, moisture, and UV exposure, necessitating effective encapsulation strategies. This review summarizes recent progress in enhancing the environmental stability of perovskite nanocrystals through polymer matrix embedding, inorganic oxide encapsulation, and compositionally matched core-shell structures using homogenous perovskite derivatives. We discuss how polymers enhance the environmental and moisture stability of perovskite nanocrystals, how oxide-based shells (e.g., SiO₂, TiO₂) contribute to thermal robustness and barrier protection, and how homostructural core-shells provide lattice-matched defect passivation with improved long-term durability. A comprehensive understanding of the advantages and limitations of each encapsulation strategy, along with their rational integration, can accelerate the commercialization of perovskite-based technologies in various applications such as highcolor- purity displays, color conversion filters, and flexible optoelectronic devices.