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22 Jul 09:24

Integrating Perovskite Solar Cells into a Flexible Fiber

by Longbin Qiu, Jue Deng, Xin Lu, Zhibin Yang, Huisheng Peng

Abstract

Perovskite solar cells have triggered a rapid development of new photovoltaic devices because of high energy conversion efficiencies and their all-solid-state structures. To this end, they are particularly useful for various wearable and portable electronic devices. Perovskite solar cells with a flexible fiber structure were now prepared for the first time by continuously winding an aligned multiwalled carbon nanotube sheet electrode onto a fiber electrode; photoactive perovskite materials were incorporated in between them through a solution process. The fiber-shaped perovskite solar cell exhibits an energy conversion efficiency of 3.3 %, which remained stable on bending. The perovskite solar cell fibers may be woven into electronic textiles for large-scale application by well-developed textile technologies.

Thumbnail image of graphical abstract

Wearable perovskite solar cells with a fiber structure are synthesized by continuously winding an aligned carbon nanotube (CNT) sheet onto a stainless-steel wire; photoactive materials are incorporated in between them through a solution process. The fiber-shaped perovskite solar cell exhibits an energy conversion efficiency of 3.3 % and may be woven into electronic textiles.