Publication date: 17th February 2025
The fabrication of flexible perovskite solar cells has recently been showing great advances, with record efficiencies reaching 24.90% [1], not far from the current record rigid devices (26.7%) [2]. The repeatability of the fabrication however, as well as the ease of upscaling such process, is still hindered by the quality of the substrate [3]. This hinderance represents a problem when designing cells for applications that require flexibility and low weight such as wearable devices, and it is therefore important to demonstrate such processes by producing cells capable of powering flexible electronics.
In this work, we present a fully flexible and integrated device for sensing and monitoring applications. The device incorporates a flexible p-i-n perovskite solar device that powers the electronic circuit with sensing capabilities. The system integrates a near-field communication (NFC) transponder chip with logic, analog inputs, storage, and transceiver functionalities, bonded onto a flexible circuit constructed using conductive dispensing ink, including the NFC antenna. Additionally, a resistive flexible environmental sensor, fabricated with laser-induced graphene, has been characterized by demonstrating high sensitivity and excellent stability.
This proof-of-concept offers a pathway toward cost-effective, lightweight, and multifunctional electronics, and addresses the growing demand for upscalable, flexible solar cells capable of powering complete integrated systems.
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