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. 2024 May 18;15:4242. doi: 10.1038/s41467-024-48677-4

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© The Author(s) 2024

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 7 — a Photograph exhibiting the flexible Ce_1.25Fe₃CoSb₁₂ thin-film-based flexible generator. b Photograph exhibiting the testing platform used to assess the performance of the manufactured flexible thin film generator. c Infrared photograph of temperature distribution on the flexible device after applying a temperature difference ΔT. d The open-circuit voltage V_oc of the test varies with ΔT. The cold-side temperature T_c is 523 K. The (e) V_oc and (f) output power P of the test vary with load current I_load at different ΔTs. The T_c is 523 K. g The measurement output power density ω varies with ΔT. Here the T_c is 523 K. h Image of the Ce_1.25Fe₃CoSb₁₂ flexible thin-film-based device securely adhered to the surface of a heating tube furnace. i Measurement of I and V over time as the device gathers residual heat from the curved surface of the tube furnace for power generation. An inset displays the photograph of the platform utilized for measuring I and V during waste heat power generation. Another inset presents an infrared image illustrating the surface temperature distribution of the flexible thin-film-based device during waste heat power generation.