Noora Lamminen, Jussi Lahtinen, Mokurala Krishnaiah, Joshua Karlsson, Milan Saju, G. Krishnamurthy Grandhi, Paola Vivo
{"title":"Surpassing the 10% Efficiency Threshold in Perovskite-Inspired Indoor Photovoltaics","authors":"Noora Lamminen, Jussi Lahtinen, Mokurala Krishnaiah, Joshua Karlsson, Milan Saju, G. Krishnamurthy Grandhi, Paola Vivo","doi":"10.1021/acsenergylett.5c01472","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01472","url":null,"abstract":"Perovskite-inspired materials (PIMs) are promising candidates for low-toxicity indoor photovoltaics (IPVs), but their power conversion efficiencies (PCEs) have been so far largely limited by poor thin-film morphology and suboptimal device architectures. Here, we report a PCE exceeding 10% under 1000 lux indoor lighting by integrating device and film engineering strategies, including a dual-purpose interfacial modifier atop a hybrid antimony–bismuth halide PIM, advancing the development of efficient pnictogen-based IPVs for Internet of Things (IoT) applications.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"35 1","pages":"3415-3418"},"PeriodicalIF":22.0,"publicationDate":"2025-06-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144547986","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Alexander Gunnarson, Oliver Christensen, Alexander Frisina, Miriam Varón, Emanuel R. Billeter, Christian D. Damsgaard, Cathrine Frandsen, Jens K. Nørskov, Ib Chorkendorff
{"title":"Ammonia Decomposition in the Presence of Water: A Resilient Barium Cobalt Catalyst","authors":"Alexander Gunnarson, Oliver Christensen, Alexander Frisina, Miriam Varón, Emanuel R. Billeter, Christian D. Damsgaard, Cathrine Frandsen, Jens K. Nørskov, Ib Chorkendorff","doi":"10.1021/acsenergylett.5c01389","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01389","url":null,"abstract":"Thermocatalytic ammonia decomposition is a critical step in utilizing ammonia as a zero-emission fuel and energy carrier. Despite its industrial relevance, the impact of water─commonly added to ammonia to prevent tank and pipeline degradation by stress corrosion cracking─on catalyst performance remains largely unexplored. Here, we investigate the influence of trace water on the activity of Co- and Fe-based ammonia decomposition catalysts through a combined experimental and theoretical approach. Our findings reveal that while some promoted catalysts experience a detrimental activity loss, a barium-promoted cobalt catalyst demonstrates remarkable resilience, retaining most of its activity even at water concentrations up to 1%.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"20 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144370912","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Frederico P. Delgado, Frederico Simões, Leeor Kronik, Waldemar Kaiser, David A. Egger
{"title":"Machine-Learning Force Fields Reveal Shallow Electronic States on Dynamic Halide Perovskite Surfaces","authors":"Frederico P. Delgado, Frederico Simões, Leeor Kronik, Waldemar Kaiser, David A. Egger","doi":"10.1021/acsenergylett.5c01519","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01519","url":null,"abstract":"Previous studies indicated that defects in halide perovskites can generate shallow electronic states, which are crucial for their performance in devices. However, how shallow states persist amid pronounced atomic dynamics on halide perovskite surfaces remains unknown. We reveal that electronic states at surfaces of prototypical CsPbBr<sub>3</sub> are energetically distributed at room temperature, akin to well-passivated inorganic semiconductors, despite the presence of undercoordinated atoms and cleaved bonds. Notably, approximately 70% of surface-state energies appear within 0.2 eV of the valence-band edge. Although deep states can still form, they are rarely energetically isolated and are less likely to act as traps. Accelerating first-principles calculations via machine learning, we show that the unique atomic dynamics in halide perovskites render the formation of deep electronic states at their surfaces unlikely. These findings reveal the microscopic mechanism behind the low density of deep states at dynamic halide perovskite surfaces, which is key to their device performance.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"247 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341313","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Heyong Wang, Antonella Treglia, Chun-Sheng Jack Wu, Guanhaojie Zheng, Miguel M. de Vries Ibáñez, Gianvito Vilé, Hui Li, Luca Gregori, Filippo De Angelis, Jianpu Wang, Feng Gao, Annamaria Petrozza
{"title":"In-Situ Self-Encapsulated Tin-Halide Perovskites for Air-Functional Near-Infrared Light-Emitting Diodes","authors":"Heyong Wang, Antonella Treglia, Chun-Sheng Jack Wu, Guanhaojie Zheng, Miguel M. de Vries Ibáñez, Gianvito Vilé, Hui Li, Luca Gregori, Filippo De Angelis, Jianpu Wang, Feng Gao, Annamaria Petrozza","doi":"10.1021/acsenergylett.5c01017","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01017","url":null,"abstract":"Tin-halide perovskites are emerging as exceptional materials for near-infrared light-emitting diodes (NIR-LEDs). However, their extreme oxygen sensitivity remains a significant obstacle to practical applications. This work presents a facile yet effective strategy to overcome this limitation by designing self-encapsulated tin-halide perovskite films. Incorporating a rational molecule, 4,4′-diaminodiphenyl sulfone, into precursors, it forms isolated tin-iodide perovskite particles that are encapsulated in situ, achieving outstanding air stability. The resulting films show high crystallinity, reduced trap density, and mitigated p-doping density, boosting radiative charge recombination to reach an impressive photoluminescence quantum yield approaching 50%. Leveraging these advancements, the resulting NIR-LEDs demonstrate a record-breaking peak external quantum efficiency of 12.4%, accompanied by a substantial improvement in operational lifetime. Notably, for the first time, we demonstrated a functional tin-iodide perovskite-based device in ambient air. This work provides a robust pathway for realizing high-performance and stable tin-halide perovskite-based optoelectronic devices, addressing critical challenges for their widespread application.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"7 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341270","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Wei Wang, Sijing Liu, Yuewang Yang, Zhaowen Bai, Jie Chen, Zhijian Tan, Jie Yan, Qingyun Hu, Yang Ren, Qi Liu
{"title":"Quantitatively Mapping Inhomogeneous State of Charge in a Commercial Lithium-Ion Pouch Cell via Energy-Resolved Neutron Imaging","authors":"Wei Wang, Sijing Liu, Yuewang Yang, Zhaowen Bai, Jie Chen, Zhijian Tan, Jie Yan, Qingyun Hu, Yang Ren, Qi Liu","doi":"10.1021/acsenergylett.5c01167","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01167","url":null,"abstract":"The booming electric vehicle market is fueling demand for higher energy density and enhanced safety in lithium-ion batteries. State of charge (SOC), a critical metric for assessing battery performance, provides insights into the energy status, health, and safety of the battery. Commercial cells often exhibit heterogeneous SOC distributions that are challenging to measure. We employ advanced energy-resolved neutron imaging to achieve quantitative SOC mapping of a commercial 2.5 Ah LiFePO<sub>4</sub>||graphite pouch cell charged under a controlled temperature field (0–23 °C). Our findings show that higher temperature regions have more LiC<sub>6</sub>, indicating higher SOC levels. Synchrotron high-energy X-ray diffraction confirmed this distribution and its correlation with the cathode. A high-throughput analysis of SOC–temperature correlations using polynomial regression on 4000 experimental data points achieved an <i>R</i><sup>2</sup> value of 0.9823, demonstrating robust modeling. This research underscores neutron imaging’s role in nondestructive mapping and machine learning applications for advancing battery detection technologies and improving performance predictions.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"1 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-06-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341312","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Zhiyuan Zhang, Christopher Kondratowicz, Jacob Smith, Pavel Kucheryavy, Junjie Ouyang, Yijie Xu, Elizabeth Desmet, Sophia Kurdziel, Eddie Tang, Micheal Adeleke, Aditya Dilip Lele, John Mark Martirez, Miaofang Chi, Yiguang Ju, Huixin He
{"title":"Plasma-Assisted Surface Nitridation of Proton Intercalatable WO3 for Efficient Electrocatalytic Ammonia Synthesis","authors":"Zhiyuan Zhang, Christopher Kondratowicz, Jacob Smith, Pavel Kucheryavy, Junjie Ouyang, Yijie Xu, Elizabeth Desmet, Sophia Kurdziel, Eddie Tang, Micheal Adeleke, Aditya Dilip Lele, John Mark Martirez, Miaofang Chi, Yiguang Ju, Huixin He","doi":"10.1021/acsenergylett.5c01034","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01034","url":null,"abstract":"Electrocatalytic nitrogen reduction (eNRR) offers a green pathway for the production of NH<sub>3</sub> from N<sub>2</sub> and H<sub>2</sub>O under ambient conditions. Transition metal oxynitrides (TMO<sub><i>x</i></sub>N<sub><i>y</i></sub>) are among the most promising catalysts but face challenges in achieving a high yield and faradaic efficiency (FE). This work develops a hybrid WO<sub><i>x</i></sub>N<sub><i>y</i></sub>/WO<sub>3</sub> catalyst with a unique heterogeneous interfacial complexion (HIC) structure. This design enables <i>in situ</i> generation and delivery of highly active hydrogen atoms (H*) in acidic electrolytes, promoting nitrogen hydrogenation and the formation of nitrogen vacancies (Nv) on the WO<sub><i>x</i></sub>N<sub><i>y</i></sub> surface. This significantly enhances the selectivity of eNRR for NH<sub>3</sub> synthesis while suppressing the hydrogen evolution reaction (HER). A simple two-step fabrication process─microwave hydrothermal growth followed by plasma-assisted surface nitridation─was developed to fabricate the designed catalyst electrode, achieving an NH<sub>3</sub> yield of 3.2 × 10<sup>–10</sup> mol·cm<sup>–2</sup>·s<sup>–1</sup> with 40.1% FE, outperforming most TMN/TMO<sub><i>x</i></sub>N<sub><i>y</i></sub> electrocatalysts. Multiple control experiments confirm that the eNRR follows an HIC-enhanced Mars–van Krevelen (MvK) mechanism.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"9 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144341196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Synergistic Solvent and Surface Engineering to Reduce VOC Loss in Tin Halide Perovskite Solar Cells","authors":"M. Bilal Faheem, Bilawal Khan, Yuchen Zhang, Hansheng Li, Madan Saud, Hanjie Lin, Haining Zhang, Syed Bilal Ahmed, Vanshika Vanshika, Ruosi Qiao, Poojan Kaswekar, Yeqing Wang, Weiwei Zheng, Jr-Hau He, Quinn Qiao","doi":"10.1021/acsenergylett.5c00792","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c00792","url":null,"abstract":"Tin (Sn) halide perovskites, typically FASnI<sub>3</sub>, resemble their lead (Pb)-based counterparts in optoelectronic properties but possess dissimilar crystallization kinetics leading to meager device performance. In this study, we fabricated FASn-halide perovskite solar cells (PSCs) with a high open-circuit voltage (<i>V</i><sub>OC</sub>) of 1042 mV and a power conversion efficiency (PCE) of 15.48%, as verified by an independent photovoltaic lab. By employing a comprehensive solvent and surface engineering strategy, we enhanced crystal stability and grain size, reduced trap state density, and improved energy level alignment. This was achieved by introducing tetraethylammonium (TEA<sup>+</sup>) cation at both surface and bulk grain boundaries, through the post-treatment of perovskite film with a preheated solution mixture of <i>N</i>,<i>N</i>-diethylformamide (DEF) and tetraethylammonium bromide (TEABr) in isopropanol (IPA). This approach also effectively suppressed the notorious Sn<sup>2+</sup> to Sn<sup>4+</sup> oxidation, resulting in reduced charge carrier trapping at grain boundaries. Moreover, the effectiveness and scalability of this strategy are validated with a 1.02 cm<sup>2</sup> active area device, achieving a high PCE of 12.21%. Our findings highlight the potential of Sn-halide PSCs to rival Pb-based PSCs in efficiency and stability, paving the way for more environmentally friendly, Pb-free alternatives.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"237 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Damp-Stable Perovskite/Silicon Tandem Solar Cells with Internal Encapsulating Sulfonium-Based Molecules","authors":"Haowen Luo, Xinrui Han, Bowen Yang, Wennan Ou, Jiajia Suo, Hongfei Sun, Xuntian Zheng, Jiajia Hong, Zijing Chu, Lu Zhao, Shuncheng Yang, Pu Wu, Chenyang Duan, Chenshuaiyu Liu, Manya Li, Ludong Li, Renxing Lin, Wenchi Kong, Hairen Tan","doi":"10.1021/acsenergylett.5c01010","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01010","url":null,"abstract":"Industrially textured perovskite/silicon tandem solar cells are among the most promising candidates for future low-cost photovoltaic deployment. Air-annealing is an inevitable process to fabricate high-quality perovskite films during the hybrid two-step deposition method. However, this process often leads to severe perovskite decomposition on the surface because of moisture exposure and high-temperature. To address this issue, a stabilizing additive─dimethylphenethylsulfonium iodide (DMPESI)─is introduced into the organic salt solution, forming a hydrophobic internal encapsulation layer. As a result, the perovskite surface decomposition is effectively suppressed during the air-annealing process and the resulting perovskite films exhibit significantly enhanced film stability and quality. Consequently, the industrially textured perovskite/silicon tandem solar cells delivered an impressive efficiency of 30.49% (1.21 cm<sup>2</sup>). Moreover, encapsulated tandem devices retained 84% of their initial efficiency after nearly 1800 h of maximum power point tracking (MPPT) (ISOS-L-1) and 80% after 723 h of damp heat test (ISOS-D-3).","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"607 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Constructing All-Climate Hybrid Sodium Ion/Metal Batteries through Intersolvent Synergistic Effect","authors":"Yiwen Gao, Haifeng Tu, Jiangyan Xue, Yan Wang, Shiqi Zhang, Suwan Lu, Lingwang Liu, Keyang Peng, Guochao Sun, Guangye Wu, Peng Ding, Yi Yang, Zhicheng Wang, Jingjing Xu, Xiaodong Wu","doi":"10.1021/acsenergylett.5c01080","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01080","url":null,"abstract":"Rechargeable sodium ion batteries (SIBs) under extreme conditions are still limited by sluggish Na<sup>+</sup> transport/desolvation kinetics and unstable electrode/electrolyte interface, thus leading to rapid capacity decay and a short lifespan. Herein, electrolyte engineering is proposed via solvent–solvent hydrogen bonding interaction between dimethyl sulfite (DMS) and glutaronitrile (GN) solvents for wide-temperature SIBs. The formed hydrogen bonding between DMS and GN solvents not only enhances the antioxidative ability of DMS but also simultaneously promotes the formation of a loose solvation structure by distancing DMS from Na<sup>+</sup> ions, facilitating Na<sup>+</sup> transport/desolvation kinetics. The well-designed electrolyte exhibits wide-temperature application from −55 to 60 °C in NaNi<sub>0.33</sub>Fe<sub>0.33</sub>Mn<sub>0.33</sub>O<sub>2</sub> ||Na half cells, while the improved cycling stability with preactivated hard carbon anode is also obtained from −40 to 45 °C. This work sheds light on intersolvent synergistic effect for wide-temperature electrolyte design, specializing in regulating electrolyte thermodynamic and kinetic behavior.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"15 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144329399","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Yameen Ahmed, Wanlong Wang, Mohammad Reza Kokaba, Augusto Amaro, Vishal Yeddu, Hannah Gartside, Muhammad Awais, Sergey Dayneko, Dongyang Zhang, Hayley C. Parkin, I Teng Cheong, Victor Marrugat-Arnal, Alexandre G. Brolo, Makhsud I. Saidaminov
{"title":"PTAA/Perovskite Contact-Area Reduced Solar Modules","authors":"Yameen Ahmed, Wanlong Wang, Mohammad Reza Kokaba, Augusto Amaro, Vishal Yeddu, Hannah Gartside, Muhammad Awais, Sergey Dayneko, Dongyang Zhang, Hayley C. Parkin, I Teng Cheong, Victor Marrugat-Arnal, Alexandre G. Brolo, Makhsud I. Saidaminov","doi":"10.1021/acsenergylett.5c01213","DOIUrl":"https://doi.org/10.1021/acsenergylett.5c01213","url":null,"abstract":"Scalable fabrication of perovskite solar cells (PSCs) in ambient air is important toward widespread industrial adoption. While spiro-OMeTAD-based PSCs perform well, they lack long-term stability, and alternative hole transport layers often trade efficiency for durability. Here we report high molecular weight poly(triarylamine) (HMW PTAA)-based PSCs fabricated in ambient air using scalable techniques, achieving 23.7% efficiency for 0.049 cm<sup>2</sup> solar cells and 22.2% for 10.23 cm<sup>2</sup> mini-modules, representing, to our knowledge, the highest values reported for scalable <i>n-i-p</i> PTAA-based perovskite photovoltaics made in ambient conditions. The HMW PTAA spontaneously forms a contact-area-reduced (CAR) interface with perovskite, enhancing charge collection and suppressing recombination. Despite reduced adhesion, the CAR interface improves PSC stability; devices retain 83% of their efficiency after 1000 h of operation at maximum power point at 55 ± 5 °C, and 77% after 1100 h of thermal stress at 85 °C. We attribute this resilience to strain-relieving interfacial voids created by the CAR interface.","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":"234 1","pages":""},"PeriodicalIF":22.0,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144319705","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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