Nano Energy最新文献

{"title":"Adaptive vibration-rotation integrated modulator for harvesting low-frequency energy toward self-powered vehicle intrusion alarming system","authors":"Kangjia Zhai, Li Zhang, Cheng Li, Yuanbo Li, Zehao Hou, Kangqi Fan, Rusen Yang","doi":"10.1016/j.nanoen.2025.111529","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111529","url":null,"abstract":"The pedestrian walkway area is prone to incidents of motor vehicle intrusion, posing a threat to pedestrian safety. Roadbed vibration energy can contribute to self-powered vehicle intrusion alarming (VIA) systems for improving pedestrian safety, but its efficient exploitation is highly difficult due to the adverse low-frequency and intermittent features. This paper introduces an adaptive vibration-rotation integrated modulator (VRIM) that can transform low-frequency vibrations directly to unidirectional and high-speed rotation to increase output power and extend output duration. Enabled by a simple-structured friction-driving mechanism and an innovative magnetic rotation rectifier, the VRIM can output 642 rpm high-speed rotation as actuated by 0.2 Hz low-frequency vibration. Based on the VRIM, a triboelectric-electromagnetic hybrid nanogenerator (VRIM-TEHG) is designed for implementing both energy harvesting and self-driven sensing of different vibration sources. It is demonstrated that, under 1 Hz low-frequency vibration, the VRIM-TEHG can deliver an electrical power of 71 mW and achieve a high output frequency of 160 Hz. After the vibration vanishes, the high-frequency electric outputs can still sustain for 148 s, indicating that the VRIM-TEHG can provide continuous electric outputs even if the vibration frequency is well below 0.01 Hz. A passive VIA system is further constructed with the VRIM-TEHG and its feasibility is verified through outdoor tests, which highlights the promising application of the VRIM-TEHG in harnessing ambient low-frequency vibration energy and achieving self-sufficient smart systems for transportation.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"97 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145295341","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":"A Mixed Ion-Electron Thermoelectric Generator with an Activated Carbon Ionogel for Heat Harvesting from Fluctuated and Steady Temperature Gradients","authors":"Kun Zhang, Qi Qian, Cheng Xu, Zhijun Chen, Shouxin Liu, Jianyong Ouyang","doi":"10.1016/j.nanoen.2025.111527","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111527","url":null,"abstract":"Ionic thermoelectric (iTE) materials hold great potential for efficient heat-to-electricity conversion due to their exceptionally high thermopower. However, they can harvest only intermittent heat, and no power is generated under steady temperature gradient. In this study, we present a mixed ion-electron thermoelectric generator (MTEG) that can continuously generate electricity under not only fluctuated temperature but also steady temperature gradient. The active material is an ionogel embedded with activated carbon (AC) particles. It is a mixed ion-electron conductor as the ionic liquid is an ion conductor while the AC particles can form conductive networks for electron transport. The TE performance under steady temperature gradient is like that of the conventional thermoelectric generators (TEGs) with electronic materials. The MTEGs under the temperature gradient of 3<!-- --> <!-- -->K can supply an output voltage of more than 7.9<!-- --> <!-- -->mV·K^-1 to the external load of 25 kΩ, which is higher than that of the best electronic TE materials by 1-2 orders in magnitude. The TE behavior of the MTEGs is ascribed to the synergistic contributions of the Soret effect of the ions and hole tunneling through the AC networks.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"41 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145289030","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":"Molecular Ordering Enables High efficiency and Stable All-Polymer Solar Cells Operated in Temperature-Variable Environment","authors":"Weichao Zhang, Hong Zhang, Mengni Wang, Yaochang Yue, Shengli Yue, Rongshen Yang, Shilin Li, Ming Zhang, Guanghan Zhao, Jin Zhou, Yali Chen, Yue Chen, Zhixiang Wei, Penggang Yin, Jianxin Kang, Yu Chen, Huiqiong Zhou, Yuan Zhang","doi":"10.1016/j.nanoen.2025.111531","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111531","url":null,"abstract":"All-polymer solar cells (all-PSC) have received vast progress recently. However, the complexity of polymer chain entanglements imposes barrier for improving charge carrier transport and photovoltage gains toward higher photovoltaic performance. Here, we present a study on molecular structure-voltage loss-device stability relationships in all-PSCs based on a group of A-D-A’-D-A type polymer acceptors (PY-IT, PY-DT and PY-FT) in blends with the polymer donor PM6. We show that the conformational rigidify of polymer acceptor plays a decisive role in reducing transport-related energetic disorder (σ) in blends and non-radiative recombination (Δ<em>V</em>_non-rad) for photovoltage loss. Notably, the PM6:PY-DT heterojunction achieves a low σ (0.281<!-- --> <!-- -->eV), resulting in a low Δ<em>V</em>_non-rad (0.183<!-- --> <!-- -->V), a high fill factor (78.34), and a PCE of 19.26%. We further show that the reduced energetic and molecular disorder in the all-polymer heterojunction can lead to a phase morphology that is thermally and kinetically more stable under illumination. As a result, Δ<em>V</em>_non-rad growth under light-soaking is suppressed, enabling devices to retain 83% and 91.9% of their initial PCE after 1000<!-- --> <!-- -->hours of MPP tracking and five thermal cycles (205–353<!-- --> <!-- -->K), respectively. These findings offer guidance for simultaneously improving efficiency and stability in organic solar cells toward practical applications.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"14 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145295114","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":"Highly Reliable Shear Sensitive Triboelectric Smart Textile for Intelligent Gait Analysis Toward Early Detection and Offloading Rehabilitation of Diabetic Foot Ulcers","authors":"Xinyu Wang, Wenxuan Guo, Yumin Zhao, Xu Sun, Zhengxiang Jin, Xiaodong Jiao, Ce Chuai, Xuyuan Tao, Xianyi Zeng, Peng Xu, Hao Sun, Qinglin Sun","doi":"10.1016/j.nanoen.2025.111528","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111528","url":null,"abstract":"Diabetic foot ulcers (DFUs) are a severe complication of diabetes that leads to substantial morbidity and mortality. Quantifying compressive and shear stresses during the gait process provides an effective approach for assessing the early risk of DFUs and enabling timely intervention. However, current gait analysis devices suffer from a critical lack of shear stress detection capability, as well as limitations related to comfort, privacy concerns, and long-term stability. This paper proposes a shear stress sensitive triboelectric smart textile sensing system for intelligent gait analysis. The system comprises a smart insole featuring a triboelectric smart textile array in high-stress foot regions, a flexible printed circuit board (FPCB) for signal transmission, and a self-attention based multi-modal recognition software. An interlocked hill structure, inspired by mammalian skin, is integrated into the triboelectric smart textile. This structure helps focus and amplify localized stress, enabling rapid acquisition of external stimulus information with high sensitivity (0.062<!-- --> <!-- -->V/kPa for shear stress, 0.05<!-- --> <!-- -->V/kPa for compressive stress), fast response (less than 20 ms), stable (enduring 40000 cycles), and accurate sensing of a wide stress range (0-200 kPa). The compressive and shear stress cues obtained from the triboelectric smart textile are feature-extracted and model-fitted by a meticulously designed multi-label sequence data recognition neural network model based on self-attention mechanisms. Inter-module communication among multiple prediction heads enables deep gait-related insights, enhancing the models generalization, computational efficiency, and interpretability. The system supports patient identity recognition, early detection and offloading rehabilitation of DFUs, offering a low-cost, energy-efficient, and universally applicable solution for next-generation smart healthcare systems.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"8 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145295338","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":"Ternary Organic Solar Cells: Third-component Effect on Molecular Packing and Charge Transfer Properties","authors":"Yiqi Pan, Jiaxu Li, Yajun Wang, Zijie Meng, Zihao Yang","doi":"10.1016/j.nanoen.2025.111530","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111530","url":null,"abstract":"Besides conventional photovoltaic properties, molecular engineering plays an important role in enhancing the synergy among components and maximizing the performance of ternary organic solar cells (TOSCs). Here, molecular dynamics simulations and long-range corrected density functional theory calculations are combined to examine the impact of several third-component structures on molecular packing and charge transfer properties in PM6:X:Y6 blends. SN exhibits superior miscibility in PM6:Y6 blend and forms an alloy-like structure with Y6, effectively promoting the formation of dimer/trimer donor-acceptor complexes. This contributes to the significant enhancement of exciton dissociation and reduction of non-radiative voltage losses (Δ<em>V</em>_nr). Meanwhile, electron delocalization on the SN_Y6 alloy modulates the LUMO levels of the trimer complexes, lowers exciton binding energy, and contributes to a further reduction of non-radiative recombination. However, other third-component structures exhibit modest efficiency in optimizing donor-acceptor mixing, leading to inefficient dimer/trimer complex formation, limited contribution to exciton dissociation enhancement, and a restricted ability to reduce Δ<em>V</em>_nr. This work provides valuable insights for the rational selection of third-component materials to enhance the performance of TOSCs.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"1 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145295340","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":"Physical reservoir computing system fully implemented using a single flash memory device via tailored decay pulse modulation","authors":"Donghyun Ryu, Suyong Park, Seongmin Kim, Hyeon Ho Lee, Sungjun Kim, Woo Young Choi","doi":"10.1016/j.nanoen.2025.111525","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111525","url":null,"abstract":"With the rapid expansion of artificial intelligence (AI) applications, developing energy-efficient hardware capable of processing temporal data has become increasingly critical. In this work, we present a physical reservoir computing (RC) system fully implemented using a single TiN/Al₂O₃/Si₃N₄/SiO₂/poly-Si (TANOS) flash memory device. Unlike prior approaches that rely on multiple or heterogeneous devices, our system uniquely realizes both the reservoir and readout functionalities within a single device platform. By applying a tailored decay pulse scheme, we induce short-term memory (STM)-like dynamics in a device traditionally known for long-term memory (LTM), enabling dynamic reservoir state evolution essential for temporal signal encoding. The TANOS device demonstrates excellent endurance (&gt;10⁵ cycles), low gate leakage (~10.06<!-- --> <!-- -->nA), and high device uniformity, supporting reliable and low-power operation, with the operation possessing the highest energy consumption (erase) consuming only 513.1 pJ per pulse at room temperature. When integrated into a CNN-based RC framework, the system achieves a high classification accuracy of 88.38% on the Fashion MNIST dataset and maintains strong performance in a fully hardware-oriented MNIST simulation. These results highlight the potential of standard silicon memory technology for building compact, energy-efficient, and fully self-contained neuromorphic computing systems, paving the way for scalable and CMOS-compatible AI hardware using a single memory device.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"23 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145283721","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":"Suppressing Trap States via Donor Orientation Engineering in Non-Halogenated Layer-by-Layer Organic Solar Cells","authors":"Damin Lee, Gayoung Ham, Changwoo Park, Young Yong Kim, Sungjin Jo, Hyojung Cha","doi":"10.1016/j.nanoen.2025.111526","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111526","url":null,"abstract":"This study investigates the origin of reduced-recombination-induced voltage loss in organic solar cells (OSCs) processed from non-halogenated solvents using a layer-by-layer (LbL) architecture with a PM6-incorporated D18 donor system. Transient photovoltage and photocurrent measurements, along with grazing incidence wide-angle X-ray scattering analysis, reveal that PM6 promotes a favorable face-on molecular orientation and enhances structural ordering within the D18 donor layer. This improved ordering effectively mitigates carrier trapping through tail-state-localized energetic disorder, which intensifies bimolecular recombination and contributes to notable voltage losses. Moreover, the PM6-induced molecular alignment of D18 modulates the morphology of the overlying eC9 acceptor layer, leading to a further reduction in trap state density. Transient absorption spectroscopy verifies that the reduction in trap-state energy levels limits charge carrier recombination and prolongs carrier lifetimes, thereby improving photovoltaic performance. These findings identify donor molecular orientation as a critical morphological parameter governing energetic disorder in LbL OSCs. Overall, the proposed strategy offers a viable route for overcoming the limitations of OSCs processed using environmentally benign non-halogenated solvents.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"42 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145283746","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":"Minimalist integrated, ultrathin, scalable design of thermo-optical interfaces for above-ambient cooling","authors":"Renhao Ding, Shuangjiang Feng, Zezhou Wu, Fan Fan, Huajie Tang, Chengyue Guo, Qixiang Chen, Decheng Kong, Dongliang Zhao","doi":"10.1016/j.nanoen.2025.111524","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111524","url":null,"abstract":"Radiative cooling (RC) exhibits substantial potential for energy conservation and sustainable development, leveraging its dual mechanism of sunlight reflection and passive thermal emission to deep space without consuming any energy. However, RC remains a fundamental challenge for objects with substantial self-generated heat and operating above ambient temperature in both indoor and outdoor environments (e.g., electronic devices and communication base stations). To address this limitation, this work proposes an integrated and ultrathin thermal photonic interface (TPI) through thermo-optical design, which incorporates 2D hexagonal boron nitride (<em>h</em>-BN) nanoplates with high backward scattering efficiency into a polymer/metal oxide RC framework. The optimized TPI demonstrates exceptional solar reflectivity (&gt;93%) and mid-infrared emissivity (96%). Indoors under high thermal loading, the object coated with the TPI demonstrates temperatures 11.5 °C and 13.2 °C lower than the commercial paint and polymer matrix systems, respectively. Additionally, under daytime with high thermal loading in summer, the TPI system maintains temperatures 5-8 °C below the other two. Notably, the TPI demonstrates excellent cooling performance above the ambient temperature. This work establishes a scalable design strategy for above-ambient radiative coolers, offering an innovative paradigm for implementing 2D planar materials to RC applications.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"25 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145283877","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":"Strong piezoelectric-like electromechanical response from single granular PMMA interface","authors":"Ignaas S.M. Jimidar, Artis Linarts, Kai Sotthewes, Jānis Lungevičs, Peter C. Sherrell, Andris Šutka","doi":"10.1016/j.nanoen.2025.111519","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111519","url":null,"abstract":"Energy harvesting devices, namely triboelectric nanogenerators (TENGs) and piezoelectric nanogenerators (PENGs), are rapidly garnering interest. As such, a great deal of research is devoted to developing electromechanically responsive materials, particularly flexible polymers. State-of-the-art materials are typically from toxic fluoropolymers, which need to be avoided due to environmental contamination risks. In this work, we investigate the electromechanical response of a granular-based electromechanical device. Close-packed monolayers comprising polymethyl methacrylate (PMMA) beads with diameters of 0.5 or 3 &lt;span&gt;&lt;span style=\"\"&gt;&lt;/span&gt;&lt;span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;&amp;#x3BC;&lt;/mi&gt;&lt;/math&gt;' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"&gt;&lt;svg aria-hidden=\"true\" focusable=\"false\" height=\"1.855ex\" role=\"img\" style=\"vertical-align: -0.697ex;\" viewbox=\"0 -498.8 603.5 798.9\" width=\"1.402ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"&gt;&lt;g is=\"true\"&gt;&lt;use xlink:href=\"#MJMATHI-3BC\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;/g&gt;&lt;/svg&gt;&lt;span role=\"presentation\"&gt;&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;μ&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt;&lt;/span&gt;&lt;script type=\"math/mml\"&gt;&lt;math&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;μ&lt;/mi&gt;&lt;/math&gt;&lt;/script&gt;&lt;/span&gt;m are assembled using a solvent-free rubbing method. Subsequently, the ordered monolayers are brought into contact, while a force is cyclically applied in a quasi-static mode and during buzzer testing. The beads enable the production of ultra-thin polymer layers (with a combined thickness of only 3.5 &lt;span&gt;&lt;span style=\"\"&gt;&lt;/span&gt;&lt;span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;&amp;#x3BC;&lt;/mi&gt;&lt;/math&gt;' role=\"presentation\" style=\"font-size: 90%; display: inline-block; position: relative;\" tabindex=\"0\"&gt;&lt;svg aria-hidden=\"true\" focusable=\"false\" height=\"1.855ex\" role=\"img\" style=\"vertical-align: -0.697ex;\" viewbox=\"0 -498.8 603.5 798.9\" width=\"1.402ex\" xmlns:xlink=\"http://www.w3.org/1999/xlink\"&gt;&lt;g fill=\"currentColor\" stroke=\"currentColor\" stroke-width=\"0\" transform=\"matrix(1 0 0 -1 0 0)\"&gt;&lt;g is=\"true\"&gt;&lt;use xlink:href=\"#MJMATHI-3BC\"&gt;&lt;/use&gt;&lt;/g&gt;&lt;/g&gt;&lt;/svg&gt;&lt;span role=\"presentation\"&gt;&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;mi is=\"true\" mathvariant=\"normal\"&gt;μ&lt;/mi&gt;&lt;/math&gt;&lt;/span&gt;&lt;/span&gt;&lt;script type=\"math/mml\"&gt;&lt;math&gt;&lt;mi mathvariant=\"normal\" is=\"true\"&gt;μ&lt;/mi&gt;&lt;/math&gt;&lt;/script&gt;&lt;/span&gt;m) with controlled morphology (Set by the bead size), which is highly challenging for other polymers. Our findings show that we achieve a &lt;span&gt;&lt;span style=\"\"&gt;&lt;/span&gt;&lt;span data-mathml='&lt;math xmlns=\"http://www.w3.org/1998/Math/MathML\"&gt;&lt;msub is=\"true\"&gt;&lt;mrow is=\"true\"&gt;&lt;mi is=\"true\"&gt;d&lt;/mi&gt;&lt;/mrow&gt;&lt;mrow is=\"true\"&gt;&","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"27 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145283722","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":"Cation Dependent Linear Dichroism in PL Spectra of Self-assembled Perovskite Nanoparticle Film and Nanoparticle-Liquid Crystal Mixtures","authors":"Chengqiang Wang, Xudong Hu, Tao Song, Yanlong Ma, Pingyuan Yan, Muyan Zhu, Zhongqi Xie, Zihui Zhou, Heng Li, Qiang Wang, Xiaoming Li, ChuanXiang Sheng","doi":"10.1016/j.nanoen.2025.111523","DOIUrl":"https://doi.org/10.1016/j.nanoen.2025.111523","url":null,"abstract":"Self-assembly films formed by perovskite nanoparticles (NPs) exhibit fascinating collective assembly phenomena, but the in-depth description is still lacking. Here, three perovskite APbBr₃ NPs, where A⁺ includes Cs⁺, MA⁺, and FA⁺, with similar size wrapping with various ligands, are used as model materials. The degree of linear polarization (DOLP) strongly depends on the aggregation of the NPs. All colloidal solutions exhibit non-polarized luminescence, whereas the DOLP of APbBr₃ films range from ~0% to 10%. This can be attributed to the dipole-dipole interaction resulting from lattice distortion, imperfect shape, as well as the ligand features. Accordingly, the dipole of a NP can also interact with the dipole of liquid crystal molecules, resulting in a centimeter-scale device comprising the mixture of NPs and liquid crystal with DOLP of 50%. Our work highlights the potentials of using dipole-dipole interaction to construct NPs into large-scale structures with controllable collective optical phenomena, particularly offering a new method for linearly polarized emission.","PeriodicalId":394,"journal":{"name":"Nano Energy","volume":"38 1","pages":""},"PeriodicalIF":17.6,"publicationDate":"2025-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145283429","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}