Chinese Researchers Set New World Record for Solar Cell Efficiency

Chinese researchers have developed an organic tandem solar cell that set a new world record with a stable power conversion efficiency of 28.04%. The cell was engineered to combine a wide top layer of perovskite, achieving the highest open-circuit voltage, with a bottom organic layer that absorbs infrared light, leading to an overall efficiency of up to 28.80%. The device also demonstrated remarkable operational stability, retaining 90% of its efficiency after 625 hours of continuous illumination. The team employed a novel technique involving the addition of a "TDP" molecule that prevents ion separation and enhances stability, thereby increasing its potential for use in a variety of applications such as buildings, transportation, wearable electronics, and space missions due to its lightweight and mechanical flexibility.

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