Peng-Fang Zhang, Meng-Meng Ma, Xu Wu, Wen-Wen Chu, Shu-Ling Xu, Hai-Xia Su, Fang-Hui Du, Ling-Yang Liu, Xiang-Jin Kong, Heng-Xiang Li, Lei Ding, Zhao-Yang Wang, Zong-Ge Li, Yao Zhou, Shao-Jian Zhang, Yao Wang, Chun-hua Zhen, Jun-Tao Li
{"title":"Relocating Conjugated 2P Valence Electrons in Carbon Host to Stabilize I+ for Novel Zn-I2 Battery","authors":"Peng-Fang Zhang, Meng-Meng Ma, Xu Wu, Wen-Wen Chu, Shu-Ling Xu, Hai-Xia Su, Fang-Hui Du, Ling-Yang Liu, Xiang-Jin Kong, Heng-Xiang Li, Lei Ding, Zhao-Yang Wang, Zong-Ge Li, Yao Zhou, Shao-Jian Zhang, Yao Wang, Chun-hua Zhen, Jun-Tao Li","doi":"10.1002/aenm.202404845","DOIUrl":"https://doi.org/10.1002/aenm.202404845","url":null,"abstract":"Zn-I<sub>2</sub> battery with four-electron reaction path (I<sup>−</sup>/I<sub>2</sub>/I<sup>+</sup>) in the cathode delivers high energy density, which however is thermodynamically not favored as I<sup>+</sup> is metastable. Herein, it is demonstrated that conjugated 2P valence electrons in graphitic framework can be relocated, offering chances to stabilize I<sup>+</sup> species. Combinations of 2P elements (B, N, C, O) with various configurations are first screened computationally, identifying O─B─C─N as the optimal structure. In this B-centered domain, the adjacent O and meta-positioned N, owing to more valence electrons and higher electronegativity, are found to withdraw electrons from surrounding C atoms and enrich 2P<sub>z</sub> orbital of the electron-deficient B site at Fermi level; with weak electronegativity, the electronically enriched B tends to donate electrons to the reactants, which thus can stabilize I<sup>+</sup> and also enhance adsorption of iodine species on the carbon host. Carbon nanosheets with abundant O─B─C─N domains are developed accordingly; the relevant Zn-I<sub>2</sub> battery shows a large capacity of 420.3 mAh g<sup>−1</sup> and high coulombic efficiency of 98.9% under 0.8 A g<sup>−1</sup>; moreover, it can stand for 9000 cycles with a capacity retention of 88.8%. This computation-guided study presents how the interplay of various 2p-elements can be manipulated to pursue an efficient carbon host for novel Zn-I<sub>2</sub> batteries.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"15 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929804","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}
David Garcia Romero, Gerbrand Bontekoe, Jacopo Pinna, Lorenzo Di Mario, Carolina M. Ibarra‐Barreno, Jane Kardula, Gabor Ersek, Giuseppe Portale, Petra Rudolf, Maria Antonietta Loi
{"title":"80% Fill Factor in Organic Solar Cells with a Modified Nickel Oxide Interlayer","authors":"David Garcia Romero, Gerbrand Bontekoe, Jacopo Pinna, Lorenzo Di Mario, Carolina M. Ibarra‐Barreno, Jane Kardula, Gabor Ersek, Giuseppe Portale, Petra Rudolf, Maria Antonietta Loi","doi":"10.1002/aenm.202404981","DOIUrl":"https://doi.org/10.1002/aenm.202404981","url":null,"abstract":"The efficiency of organic solar cells has raised drastically in the past years. However, there is an undeniable lack of hole transport layers that can provide high carrier selectivity, low defect density, and high processing robustness, simultaneously. In this work, this issue is addressed by studying defect generation and surface passivation of nickel oxide (NiO<jats:sub>x</jats:sub>). It is revealed that the generation of high oxidation state species on NiO<jats:sub>x</jats:sub> surface lowers contact resistance but hinders charge extraction when employed as transport layer in organic solar cells. By using them as coordination centers, a straightforward surface modification strategy is implemented using (2‐(9H‐carbazol‐9‐yl)ethyl)phosphonic acid (2PACz) that enhances charge extraction and increases the solar cell efficiency from 11.46% to 17.12%. Additionally, the robustness of this modification across different deposition methods of the carbazole molecule is demonstrated. Finally, by fine‐tuning the Fermi level using various carbazole‐based molecules, and in particular with ((4‐(7H‐dibenzo[c,g]carbazol‐7‐yl)butyl)phosphonic acid (4PADCB), a power conversion efficiency of 17.29% is achieved, with an outstanding combination of a V<jats:sub>OC</jats:sub> of 0.888 V and a fill factor of 80%.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"21 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929068","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}
Shynggys Zhumagali, Chongwen Li, Mantas Marcinskas, Pia Dally, Yuan Liu, Esma Ugur, Christopher E. Petoukhoff, Mohammed Ghadiyali, Adi Prasetio, Marco Marengo, Anil R. Pininti, Randi Azmi, Udo Schwingenschlögl, Frédéric Laquai, Vytautas Getautis, Tadas Malinauskas, Erkan Aydin, Edward H. Sargent, Stefaan De Wolf
{"title":"Efficient Narrow Bandgap Pb‐Sn Perovskite Solar Cells Through Self‐Assembled Hole Transport Layer with Ionic Head","authors":"Shynggys Zhumagali, Chongwen Li, Mantas Marcinskas, Pia Dally, Yuan Liu, Esma Ugur, Christopher E. Petoukhoff, Mohammed Ghadiyali, Adi Prasetio, Marco Marengo, Anil R. Pininti, Randi Azmi, Udo Schwingenschlögl, Frédéric Laquai, Vytautas Getautis, Tadas Malinauskas, Erkan Aydin, Edward H. Sargent, Stefaan De Wolf","doi":"10.1002/aenm.202404617","DOIUrl":"https://doi.org/10.1002/aenm.202404617","url":null,"abstract":"Single‐junction perovskite solar cells (PSCs) have achieved certified power conversion efficiencies (PCEs) of 26.1%, which approaches their practical performance limit. Multi‐junction tandem solar cells can unlock even higher PCEs, where narrow‐bandgap lead‐tin (Pb‐Sn) perovskites, with a bandgap of 1.21–1.25 eV, are well‐suited as the bottom photo absorber in all‐perovskite tandems. Bulk engineering and surface treatments of Pb‐Sn perovskites using Lewis base molecules have been shown to reduce the defect density within the bulk and at the electron transport layer interface, thereby improving device performance. Nevertheless, the buried interface between Pb‐Sn perovskite and the commonly used hole transport layer PEDOT:PSS remains problematic due to the reactivity of polystyrene sulfonate (PSS) with Sn<jats:sup>2+</jats:sup> ions, which negatively impacts device performance. To overcome this issue, a novel carbazole‐based self‐assembled monolayer, BrNH<jats:sub>3</jats:sub>‐4PACz is synthesized, that provides a suitable dipole moment at the indium‐tin oxide interface for efficient hole extraction and features an ionic ammonium head group that passivates the perovskite at the buried interface. This dual functionality enabled the fabrication of a p‐i‐n architecture Pb‐Sn PSC with a bandgap of 1.24 eV, achieving a champion PCE of 23% and an open‐circuit voltage of 0.88 V, which ranks among the highest reported values in the literature.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"20 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929069","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":"Quantitative Analysis of Aging and Rollover Failure Mechanisms of Lithium‐Ion Batteries at Accelerated Aging Conditions","authors":"Huiyan Zhang, Yufan Peng, Yonggang Hu, Siyuan Pan, Shijun Tang, Yu Luo, Yuli Liang, Yiqing Liao, Ying Lin, Ke Zhang, Yimin Wei, Jinding Liang, Yanting Jin, Yong Yang","doi":"10.1002/aenm.202404997","DOIUrl":"https://doi.org/10.1002/aenm.202404997","url":null,"abstract":"Accurate quantification of the aging mechanisms of batteries at accelerated aging conditions is of great significance for lithium‐ion batteries (LIBs). Here the aging and rollover failure mechanisms of LiFePO<jats:sub>4</jats:sub> (LFP)/graphite batteries at different temperatures are investigated using a combination of advanced techniques such as electrolyte quantification methods, mass spectrometry titration (MST), time‐of‐flight secondary ion mass spectrometry (TOF‐SIMS), and Raman imaging. The growth, rapture, and repair process of the solid electrolyte interphase (SEI) is the primary mechanism leading to battery aging, and its contribution increases with temperature. High temperature exacerbates electrolyte decomposition (especially lithium salts), together with organic SEI decomposing into the more stable inorganic SEI at high temperature, resulting in a thicker SEI rich with inorganic compositions. High temperatures also lead to spatially inhomogeneous side reactions, which may in turn accelerate further degradation of the battery. The sharp battery capacity decline, namely the rollover failure, is primarily due to the depletion of additive VC, which shifts electrolyte degradation from additive VC to solvents and lithium salts, rather than by the increase of internal resistance, lithium plating, electrolyte drying out, electrode saturation, or mechanical deformation.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"27 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929148","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}
Jiayao Shan, Rong Gu, Jinting Xu, Shuaiqi Gong, Shuainan Guo, Qunjie Xu, Penghui Shi, YuLin Min
{"title":"Heterojunction Ferroelectric Materials Enhance Ion Transport and Fast Charging of Polymer Solid Electrolytes for Lithium Metal Batteries","authors":"Jiayao Shan, Rong Gu, Jinting Xu, Shuaiqi Gong, Shuainan Guo, Qunjie Xu, Penghui Shi, YuLin Min","doi":"10.1002/aenm.202405220","DOIUrl":"https://doi.org/10.1002/aenm.202405220","url":null,"abstract":"Solid polymer electrolytes offer great promise for all-solid-state batteries, but their advancement is constrained due to the low ionic conductivity at ambient temperature and non-uniform ion transport, which hampers fast-charging capabilities. In this study, a ferroelectric heterojunction composite is incorporated into poly(vinylidene difluoride) (PVDF) based solid electrolytes to establish an interfacial electric field that enhances lithium salt dissociation and promotes uniform ion deposition. Electrospun 1D BaTiO<sub>3</sub> nanofibers serve as a long-range organic/inorganic (polymer/filler) interface for ion transport, while MoSe<sub>2</sub> hydrothermally grown on BaTiO<sub>3</sub> forms Li<sub>2</sub>Se-rich high-speed ion conductors. The piezoelectric effect of the ferroelectric material helps suppress lithium dendrite growth by reversing internal charges and reducing local overpotentials. Consequently, the PVBM electrolyte achieves a substantia ionic conductivity of 6.5 × 10<sup>−4</sup> S cm<sup>−1</sup> and a Li-ion transference number of 0.61 at 25 °C. The LiFePO<sub>4</sub>/PVBM/Li solid-state batteries demonstrate an initial discharge capacity of 146 mAh g<sup>−1</sup> at 1 C, with a capacity preservation of 80.2% upon completion of 1200 cycles, and an initial discharge capacity of 110.7 mAh g<sup>−1</sup> at 5 C. These findings highlight the prospect of ferroelectric ceramic fillers to significantly improve ion transport and fast-charging performance in polymer electrolytes.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"34 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929445","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}
Jinyu Ge, Man Huang, Chenzhe Li, Xuebiao Ji, Xianghui Meng, Hua Tan, Hong Liu, Weijia Zhou
{"title":"The Charge Self-Regulation Effect Induced by Microcrystalline-Amorphous Heterointerface Network Toward Fast Charging Sodium Ion Batteries","authors":"Jinyu Ge, Man Huang, Chenzhe Li, Xuebiao Ji, Xianghui Meng, Hua Tan, Hong Liu, Weijia Zhou","doi":"10.1002/aenm.202405288","DOIUrl":"https://doi.org/10.1002/aenm.202405288","url":null,"abstract":"Sodium-ion batteries (SIBs), recognized for their abundant resource availability, are emerging as a viable alternative to conventional batteries. Nevertheless, sluggish electrons/ions kinetics impedes further advancement in SIBs technology. Herein, a novel microcrystalline-MoSe<sub>2</sub>/amorphous-MoSe<sub>x</sub>O<sub>y</sub> (C-MoSe<sub>2</sub>/A-MoSe<sub>x</sub>O<sub>y</sub>) is developed through in situ low-temperature oxidation of crystalline MoSe<sub>2</sub>. The microcrystalline MoSe<sub>2</sub> acts as a robust framework, while the amorphous MoSe<sub>x</sub>O<sub>y</sub> phase fills the interstitial spaces. This anode material is characterized by an optimized microcrystalline-amorphous heterointerface. The resultant charge self-regulation effect can be exploited to modulate active electron states, thereby ensuring high-speed and stable sodium storage performance. The heterointerface demonstrates an ultrahigh specific capacity (641.0 mAh g<sup>−1</sup> at 0.5 A g<sup>−1</sup>) and maintains splendid rate performances up to 100 A g<sup>−1</sup> (324.2 mAh g<sup>−1</sup>). Detailed theoretical and experimental researches indicate that the enhanced performance results from the production of active electronic states, which are initiated by the charge self-regulation effect at the microcrystalline-amorphous heterointerface in C-MoSe<sub>2</sub>/A-MoSe<sub>x</sub>O<sub>y</sub>, featuring active Mo─Se bonds, which regulates the interfacial charge redistribution and facilitate electron transfer across the active interface between the microcrystalline and amorphous phases. The findings suggest that the charge self-regulation effect, prompted by the heterointerface network, inherently accelerates electron/ion transport, offering a promising electrode design strategy for fast-charging batteries.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"56 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929772","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}
Hui Lu, Qian Wen, Ru Qin, Yunhui Han, Jiaqi Wang, Wenzhi Yang, Lei Wu, Longhui Liu, Bo Ma, Kui Zhao, Zhengguo Zhang, Bita Farhadi, Hongxiang Li, Kang Wang, Kai Wang, Shengzhong (Frank) Liu
{"title":"Manipulating Intermediate Surface Energy for High-Performance All-Inorganic Perovskite Photovoltaics","authors":"Hui Lu, Qian Wen, Ru Qin, Yunhui Han, Jiaqi Wang, Wenzhi Yang, Lei Wu, Longhui Liu, Bo Ma, Kui Zhao, Zhengguo Zhang, Bita Farhadi, Hongxiang Li, Kang Wang, Kai Wang, Shengzhong (Frank) Liu","doi":"10.1002/aenm.202405072","DOIUrl":"https://doi.org/10.1002/aenm.202405072","url":null,"abstract":"The complete phase transition from DMAPbI<sub>3</sub> and Cs<sub>4</sub>PbI<sub>6</sub> intermediates to the final CsPbI<sub>3</sub> perovskite phase is pivotal for fabricating high-quality inorganic perovskite films. In this study, the reaction energy barrier between DMAPbI<sub>3</sub> and Cs<sub>4</sub>PbI<sub>6</sub> is sought to be reduced by increasing their surface energy, where a perfluorinated compound is designed using DFT modeling to saturate the surface of the intermediates to effectively prevent their crystalline growth. Consequently, the smaller intermediates with ultrahigh surface energy react more energetically to facilitate a rapid conversion to the desired perovskite phase. It is found that the resultant inorganic perovskite shows improved crystallinity and morphology, as demonstrated by suppressed non-radiative recombination and prolonged carrier lifetimes. As a result, the optimized inorganic perovskite solar cells (PSCs) achieve a power conversion efficiency (PCE) of over 20%, along with significantly improved light and thermal stability. This work provides a way to regulate crystallization dynamics for advanced quality of inorganic perovskites.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"4 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929774","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}
Kai Wang, Bo Yu, Changqing Lin, Ruohe Yao, Huangzhong Yu, Hong Wang
{"title":"Constructing Stable Perovskite with Small Molecule Bridge Interface Passivation","authors":"Kai Wang, Bo Yu, Changqing Lin, Ruohe Yao, Huangzhong Yu, Hong Wang","doi":"10.1002/aenm.202405571","DOIUrl":"https://doi.org/10.1002/aenm.202405571","url":null,"abstract":"The interfaces of each layer in perovskite solar cells (PSCs) have a significant impact on the charge transfer and recombination. Especially, the interface between perovskite and the hole transport layer (HTL) in p-i-n type PSCs significantly affects the contact characteristics between the HTL and perovskite, hindering further improvements in performance and stability. Herein, a small molecule 9-Fluorenylmethoxycarbonyl chloride (9-YT) is introduced as a molecule bridge for p-i-n PSCs, which enhances the interaction between self-assembly molecules (SAMs) and perovskite. The conjugated backbone of 9-YT can interact with the SAM molecule (MeO-2PACz) by <i>π–π</i> stacking reaction. Moreover, 9-YT also improves the interfacial contact through strong interactions with the perovskite, where the carbonyl groups and Cl atoms in 9-YT interact with uncoordinated Pb<sup>2+</sup> in perovskite layer. The incorporation of a molecule bridge is demonstrated to markedly enhance hole extraction at the perovskite/hole transport layer interface, optimize energy level alignment, mitigate interface charge recombination, and passivate the uncoordinated Pb<sup>2+</sup> and defects in the perovskite. Finally, the device treated with 9-YT achieves a power conversion efficiency (PCE) of 24.82%. At the same time, PSCs can still maintain 92.6% of the original PCE after a long-term stability test of 1200 h.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"25 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929775","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 Iron Vacancies in Thiospinel FeIn2S4 to Modulate Fe D-Band Center and Accelerate Sodiation Kinetics Enabling High-Rate and Durable Sodium Storage","authors":"Naiteng Wu, Jinke Shen, Xinliang Zhou, Shuoyan Li, Jin Li, Guilong Liu, Donglei Guo, Wentao Deng, Changzhou Yuan, Xianming Liu, Hongshuai Hou","doi":"10.1002/aenm.202405729","DOIUrl":"https://doi.org/10.1002/aenm.202405729","url":null,"abstract":"The bimetallic synergies effect and combined conversion/alloying mechanism endow thiospinel FeIn<sub>2</sub>S<sub>4</sub> with great potential as an anode material for sodium-ion batteries (SIBs). However, their inconsistent synthesis, severe volumetric expansion, and sluggish reaction kinetics typically lead to unsatisfactory cyclic stability and rate capability. Herein, bimetallic organic framework derived FeIn<sub>2</sub>S<sub>4</sub>@N/S-C microrods with Fe vacancies is presented for fast, durable, and reversible sodium storage. The presence of Fe vacancies significantly modulates the <i>d</i>-band center of Fe and decreases the strength of the Fe─S bond for facilitating the sodiation reaction kinetics jointly. Moreover, a thin and stable solid electrolyte interface film with inorganic-rich components is formed by Fe vacancies induction. Combined with the N, S co-doped porous carbon matrix, the optimal sample delivers an excellent rate capability of 381 mAh g<sup>−1</sup> at 10 A g<sup>−1</sup> and a stable cyclic performance (448 mAh g<sup>−1</sup> after 500 cycles at 1 A g<sup>−1</sup>). Furthermore, the assembled full-cells also exhibit superior electrochemical performance with 87.5% capacity retention after rate and long-term cyclic evaluations. This work presents a promising strategy for the structural regulation of bimetallic sulfides as advanced anodes for SIBs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"36 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142929773","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":"Achieving 20% Efficiency in Organic Solar Cells Through Conformationally Locked Solid Additives","authors":"Siying Wang, Sixuan Wang, Jiarui Wang, Na Yu, Jiawei Qiao, Xianqiang Xie, Congqi Li, Misbah Sehar Abbasi, Ruxue Ding, Xin Zhang, Yinghui Han, Guanghao Lu, Jianqi Zhang, Xiaotao Hao, Zheng Tang, Yunhao Cai, Hui Huang","doi":"10.1002/aenm.202405205","DOIUrl":"https://doi.org/10.1002/aenm.202405205","url":null,"abstract":"Volatile solid additives (VSAs) have emerged as one of the most effective strategies for optimizing the active layer morphology of organic solar cells (OSCs). In this study, two VSAs, HBT-1 and HBT-2, are designed and synthesized to investigate the effect of the VASs’ conformation on the photovoltaic performances. Compared to HBT-1, HBT-2 incorporates internal noncovalent conformational locks (NoCLs), resulting in reduced conformational disorder, improved molecular planarity, and enhanced crystallinity. These features significantly influence the intermolecular packing of both donor and acceptor materials in the active layer, which can facilitate charge transport and reduce charge recombination. Consequently, the D18:L8-BO:PY-C11 OSCs utilizing the HBT-2 additive achieved an impressive efficiency of 20.01%, markedly higher than devices fabricated without additives (17.83%) and those processed with HBT-1 (18.76%). Furthermore, HBT-2 demonstrated excellent compatibility across multiple systems. This work underscores the NoCL strategy as a straightforward and effective approach for designing VSAs for high performance OSCs.","PeriodicalId":111,"journal":{"name":"Advanced Energy Materials","volume":"2 1","pages":""},"PeriodicalIF":27.8,"publicationDate":"2025-01-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142917616","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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