Engineering and Technology

Wearable perovskite solar cells by aligned liquid crystal elastomers

Z. Huang, L. Li, et al.

This groundbreaking research by Zengqi Huang and colleagues introduces a liquid crystal elastomer interlayer to enhance the efficiency and durability of flexible perovskite solar cells. Achieving efficiencies of 23.26% in rigid and 22.10% in flexible forms, these cells not only exhibit impressive performance but also integrate seamlessly into wearable devices for virtual reality applications.

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Abstract

This work introduces a liquid crystal elastomer (LCE) interlayer in flexible perovskite solar cells to improve efficiency and reliability. The aligned LCE enhances charge transfer, minimizes recombination, and boosts efficiency to 23.26% (rigid) and 22.10% (flexible). The LCE suppresses phase segregation, leading to >80% efficiency retention after 1570 h. The flexible device retains 86% efficiency after 5000 bending cycles. The cells are integrated into a wearable haptic device for pain sensation in virtual reality.

Publisher

Nature Communications

Published On

Mar 02, 2023

Authors

Zengqi Huang, Lin Li, Tingqing Wu, Tangyue Xue, Wei Sun, Qi Pan, Huadong Wang, Hongfei Xie, Jimei Chi, Teng Han, Xiaotian Hu, Meng Su, Yiwang Chen, Yanlin Song

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