Poly(vinylidene fluoride‐co‐hexafluoropropylene) additive in perovskite for stable performance of carbon‐based perovskite solar cells

International Journal of Energy ResearchVolume 46, Issue 2 p. 1565-1574 RESEARCH ARTICLE Poly(vinylidene fluoride-co-hexafluoropropylene) additive in perovskite for stable performance of carbon-based perovskite solar cells Santhosh Narendhiran, Corresponding Author Santhosh Narendhiran santhosh.10409@gmail.com orcid.org/0000-0003-2024-7679 Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Chennai, India Correspondence Santhosh Narendhiran, Department of Physics, SSN Research Centre, Sri Sivarubramaniya Nadar College of Engineering, Chennai, Tamilnadu, 603110, India. Email: santhosh.10409@gmail.comSearch for more papers by this authorAcchutharaman Kunka Ravindran, Acchutharaman Kunka Ravindran Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Chennai, IndiaSearch for more papers by this authorIsaac Daniel Rajan Thomas, Isaac Daniel Rajan Thomas Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Chennai, IndiaSearch for more papers by this authorSenthil Pandian Muthu, Senthil Pandian Muthu Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Chennai, IndiaSearch for more papers by this authorRamasamy Perumalsamy, Ramasamy Perumalsamy orcid.org/0000-0003-2987-7538 Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Chennai, IndiaSearch for more papers by this author Santhosh Narendhiran, Corresponding Author Santhosh Narendhiran santhosh.10409@gmail.com orcid.org/0000-0003-2024-7679 Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Chennai, India Correspondence Santhosh Narendhiran, Department of Physics, SSN Research Centre, Sri Sivarubramaniya Nadar College of Engineering, Chennai, Tamilnadu, 603110, India. Email: santhosh.10409@gmail.comSearch for more papers by this authorAcchutharaman Kunka Ravindran, Acchutharaman Kunka Ravindran Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Chennai, IndiaSearch for more papers by this authorIsaac Daniel Rajan Thomas, Isaac Daniel Rajan Thomas Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Chennai, IndiaSearch for more papers by this authorSenthil Pandian Muthu, Senthil Pandian Muthu Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Chennai, IndiaSearch for more papers by this authorRamasamy Perumalsamy, Ramasamy Perumalsamy orcid.org/0000-0003-2987-7538 Department of Physics, SSN Research Centre, Sri Sivasubramaniya Nadar College of Engineering, Chennai, IndiaSearch for more papers by this author First published: 09 September 2021 https://doi.org/10.1002/er.7270 Funding information: HRDG-CSIR, Grant/Award Number: 08/542[0011]2K19 EMR-I; Department of Science and Technology and Solar Energy Research Initiative, Grant/Award Number: DST/TMD/SERI/S76[G] Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Summary The efficiency of perovskite devices is depending on the crystallization process with a controlled microstructure. Perovskite precursors with polymer additive significantly improve the perovskite film crystallinity, large grain boundaries, serve as passivating defect sites yielding increased power conversion efficiency (PCE). In this study, we improved the hole-transport free carbon-based perovskite solar cells by using polymer additive to passivate the perovskite grains with large size crystal and assist to grow with the preferred orientation of the polycrystalline perovskite layer. The polymer additive systematically alters the morphology of the perovskite films. The perovskite with polymer additives exhibited reduced trap density, which could enhance the open-circuit voltage. The fluoro-polymer as an additive into perovskite layer facilitated a hydrogen bond with organic cation to form H-F bond, which could prevent degradation from moisture. The solar device with 5 wt% PVDF-HFP additives achieved ~14% improvement in open-circuit voltage and yielded a PCE of 11.11%. Moreover, the shelf-life of the solar device retains 86% from its original efficiency with a period of 30 days (stored under ambient condition, 60%-70% humidity). It is revealing that the fluoro-polymer enhances the passivation of perovskite grains and gives a hope in perovskite photovoltaics. Supporting Information Filename Description er7270-sup-0001-Supinfo.docxWord 2007 document , 146.3 KB Data S1. Supporting Information. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume46, Issue2February 2022Pages 1565-1574 RelatedInformation