Self-encapsulated wearable perovskite photovoltaics via lamination process and its biomedical application

Dongdong Wu; Zhiqiang Cui; Tangyue Xue; Ruijia Zhang; Meng Su; Xiaotian Hu; Guochen Sun

doi:10.1016/j.isci.2023.107248

Self-encapsulated wearable perovskite photovoltaics via lamination process and its biomedical application

iScience. 2023 Jun 28;26(7):107248. doi: 10.1016/j.isci.2023.107248. eCollection 2023 Jul 21.

Authors

Dongdong Wu^{1

2}, Zhiqiang Cui¹, Tangyue Xue³, Ruijia Zhang⁴, Meng Su³, Xiaotian Hu⁴, Guochen Sun¹

Affiliations

¹ Department of Neurosurgery, The First Medical Centre, Chinese PLA General Hospital, Beijing 100853, China.
² Medical School of Chinese PLA, Beijing 100853, China.
³ Key Laboratory of Green Printing, Institute of Chemistry Chinese Academy of Sciences (ICCAS), Beijing 100190, China.
⁴ College of Chemistry and Chemical Engineering/Institute of Polymers and Energy Chemistry (IPEC), Nanchang University, 999 Xuefu Avenue, Nanchang 330031, China.

Abstract

Flexible perovskite solar cells (PSCs) are highly promising photovoltaic technologies due to the prospect of integration with wearable devices. However, conventional encapsulation strategies for flexible devices often cause secondary damage to the perovskite crystals, which affects device performance. Here, we present self-encapsulated flexible PSCs realized by lamination technology. The conversion of perovskite crystals is achieved by the diffusion of lead iodide and ammonium halide under the effect of temperature and pressure. In addition, the hydrogen bonding of the introduced polyacrylamide enhances the connections of the integral device while improving the crystal quality. The self-encapsulated flexible PSCs achieve an outstanding photovoltaic conversion efficiency of 22.33%, and comprehensive stability tests are conducted based on wearable device application scenarios to verify the feasibility. Finally, 25 cm² wearable perovskite modules are successfully applied into the neuro-assisted wearable devices.

Keywords: Materials characterization; Materials processing; Optical materials.