Research progress on strategies and mechanisms of interface engineering to enhance the stability of organic solar cells
Yangyang Yu
China Jiliang University
DOI: https://doi.org/10.59429/esta.v13i1.13389
Keywords: interface engineering; organic solar cells; stability; mechanism
Abstract
Organic solar cells (OSCs) have broad application prospects in fields such as photovoltaic building integration and wearable electronics due to their advantages of flexibility, lightweight, solution processability, and low cost. In recent years, their photoelectric conversion efficiency has exceeded 20%, laying the foundation for commercial development. However, insufficient stability remains the core bottleneck that restricts its practical application. Environmental factors such as light, heat, and humidity can easily lead to rapid efficiency degradation of the device, with interface defects causing charge recombination, interlayer delamination, and water oxygen permeation being the main causes. As a key hub for charge separation, transmission, and collection in OSCs, the performance of the interface directly determines the stability and long-term service capability of the device. Therefore, interface engineering has become a key path to break through the bottleneck of OSCs stability. This article systematically reviews the mainstream strategies for improving the stability of OSCs through interface engineering through literature research, analyzes the mechanisms of each strategy, summarizes current research progress and existing problems, and proposes future prospects that fit the perspective of undergraduate research. It provides a basic reference for the preparation of high stability OSCs and promotes their commercialization process.
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