Journal of Electronic Materials最新文献

{"title":"Observation of Double-Shifted Hysteresis Loop and Exchange Bias in Polycrystalline Ni50Mn50 Thin Films","authors":"Deepak Pandey,&nbsp;Neelabh Srivastava","doi":"10.1007/s11664-026-13184-3","DOIUrl":"10.1007/s11664-026-13184-3","url":null,"abstract":"<div><p>Antiferromagnetic (AF) thin films are fundamental components in spintronic devices, such as hard-disk read heads and magnetic random-access memory, where they provide a reference magnetization direction for adjacent ferromagnetic (FM) layers. In recent years, the study of Ni-Mn alloys having equiatomic composition has gained significant attention due to their room-temperature antiferromagnetism and potential as ferromagnetic shape-memory alloys. In this work, we report the structural, morphological, and magnetic behavior of polycrystalline Ni₅₀Mn₅₀ thin films grown over an n-Si(100) substrate. Structural investigation reveals the formation of a single-phase bulk NiMn alloy with a face-centered tetragonal structure (space group I4mmm). Surface morphology and elemental analysis show a smooth surface with a Ni:Mn composition of 50:50. Furthermore, x-ray photoelectron spectroscopy (XPS) analysis reveals surface oxidation along with the different binding states of Ni and Mn atoms. Magnetization behavior shows the ferromagnetic (FM) nature of the thin film with a remarkable feature of a double-shifted hysteresis loop along with the presence of exchange bias of 38 Oe at 5 K. This could originate from the coexistence of antiferromagnetic (AF) and ferromagnetic (FM) phases and interfacial pinning within the film matrix, which diminishes at room temperatures. The results observed for the Ni-Mn thin films suggest their potential use for spintronic applications with multifunctional magnetic properties driven by phase separation and interfacial exchange anisotropy.</p></div>","PeriodicalId":626,"journal":{"name":"Journal of Electronic Materials","volume":"55 11","pages":"9438 - 9447"},"PeriodicalIF":2.8,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176519","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lightweight rGO-Integrated 2D MoS2 Nanohybrid for Enhanced Charge Storage in Supercapacitor","authors":"Mahaveer Singh,&nbsp;Bheem Kumar,&nbsp;Avinash Rundla,&nbsp; Priyanka,&nbsp;Divya Rani,&nbsp; Shanu,&nbsp;Pushpendra Kumar,&nbsp;Kedar Singh","doi":"10.1007/s11664-026-13182-5","DOIUrl":"10.1007/s11664-026-13182-5","url":null,"abstract":"<div><p>Supercapacitors are emerging as a promising electrochemical energy storage device due to fast charge–discharge capability, high power density, and remarkable cycling stability, but still their performance has certain limits due to the absence of stable, high-efficient electrode materials. Among emerging materials, molybdenum disulfide (MoS₂) has gained significant interest among the emerging electrode materials for next-generation energy storage applications due to their layered structure, large theoretical capacitance, and abundance of redox-active sites, which enable effective ion storage and charge-transfer processes. The molybdenum disulfide-reduced graphene oxide (MoS₂-rGO) nanohybrid is a promising way to overcome these constraints. Reduced graphene oxide has high electrical conductivity, mechanical flexibility, and specific surface area, which effectively suppresses MoS₂ restacking and improves ion/electron transport kinetics. The specific capacitance performance, rate capability, and electrochemical stability are all greatly enhanced by this synergistic structural integration. Herein, the MoS₂-rGO nanohybrid was synthesized by <i>in situ</i> hydrothermal processes and we examined the structural and electrochemical characteristics of a MoS₂-rGO nanohybrid electrode in 0.5 M H₂SO₄electrolyte, which exhibited a specific capacitance of 130.6 F g⁻¹ at a current density of 1.2 A g⁻¹, a high specific capacitance retention of 93.8% up to 5000 charge–discharge cycles, and a capacitive current contribution of 86.6% at a particular 50 mV s⁻¹ scan rate. These results demonstrate the effectiveness of the MoS₂-rGO nanohybrid as an efficiently performing electrode material for supercapacitors.</p></div>","PeriodicalId":626,"journal":{"name":"Journal of Electronic Materials","volume":"55 11","pages":"9426 - 9437"},"PeriodicalIF":2.8,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176518","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Performance Optimization of Rb-Substituted CsSnI3 Lead-Free Perovskite Solar Cells","authors":"Khushboo Gupta,&nbsp;Manish Kumar","doi":"10.1007/s11664-026-13140-1","DOIUrl":"10.1007/s11664-026-13140-1","url":null,"abstract":"<div><p>Tin-based lead-free perovskite solar cells have attracted significant attention as environmentally benign alternatives of lead-containing perovskites. This study is based on simulations using SCAPS-1D software to examine the performance of Rb substituted CsSnI₃ (Cs_0.75Rb_0.25SnI₃) perovskite solar cells (PSCs). The performance effects of various electron transport layers (ETLs), such as TiO₂, TiO₂/MXene, Sn(S_0.92Se_0.08)₂ and ZnO_0.3S_0.7, on device performance were systematically studied. Additionally, the absorber thickness, ETL and HTL thickness, operating temperature, electron affinity, series resistance, and defect density were optimized for key device parameters. The simulated results showed that the PSC structure FTO/ZnO_0.3S_0.7/Cs_0.75Rb_0.25SnI₃/CuI/Au has demonstrated excellent photovoltaic performance, owing to the optimal band alignment and effective charge transport. The optimized device exhibited an open-circuit voltage (<i>V</i>_OC) of 1.134 V, a short circuit current density (<i>J</i>_SC) of 33.329 mA cm⁻², a fill factor (FF) of 80.68%, and a maximum power conversion efficiency (PCE) of 30.51%. Quantum efficiency (QE) analysis demonstrated high photoresponse across a broad spectral range. The influence of defect density, temperature, electron affinity, and series resistance on carrier recombination and device performance was also investigated. Admittance and impedance spectroscopy analysis confirmed low defect-assisted recombination, high recombination resistance, efficient charge extraction, and excellent interfacial properties in the optimized device. The obtained results demonstrate that Rb incorporation combined with ZnO_0.3S_0.7-based electron transport engineering provides an effective strategy to enhance the efficiency and electrical characteristics of CsSnI₃-based lead-free PSC and offers valuable guidance for future experimental development of high-performance photovoltaic devices.</p><h3>Graphical Abstract</h3>\u0000<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":626,"journal":{"name":"Journal of Electronic Materials","volume":"55 11","pages":"9408 - 9425"},"PeriodicalIF":2.8,"publicationDate":"2026-09-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176521","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy Harvesting Performance of TPMS-Based Cement Piezocomposites: A Comparative Study of Primitive and Diamond Architectures","authors":"Raj Kiran,&nbsp;Saira Javed","doi":"10.1007/s11664-026-13169-2","DOIUrl":"10.1007/s11664-026-13169-2","url":null,"abstract":"<div><p>Cement-based piezoelectric composites with triply periodic minimal surface (TPMS) architectures provide a structurally compatible and tunable platform for embedded energy harvesting in civil infrastructure. This study presents a comparative multiscale investigation of Primitive and Diamond TPMS cement–lead zirconate titanate (PZT)-5A composites using representative volume element homogenization with periodic boundary conditions to evaluate the effective elastic, piezoelectric, and dielectric properties over filler volume fractions of <i>V</i>_f = 10–50%. The results show that increasing piezoelectric content enhances stiffness, electromechanical coupling, and dielectric response for both topologies. The Diamond architecture exhibits higher longitudinal stiffness, stronger axial piezoelectric coupling, and superior energy harvesting figures of merit at moderate to high volume fractions, whereas the Primitive topology shows relatively higher transverse piezoelectric response and dielectric permittivity. The homogenized properties are then employed in two practical harvesting systems: vibration-driven cantilever beams and traffic-loaded pavement slabs. In cantilever harvesting, both topologies show increasing power output with filler content, while the Diamond architecture generally delivers higher peak power. Under traffic-induced compressive loading, the Diamond topology again outperforms the Primitive structure, particularly at higher excitation frequencies where dynamic amplification becomes significant, with the simulations predicting more than three times the peak power near resonance. These findings establish a direct structure–property–performance framework for designing TPMS cement-based piezocomposites for self-powered pavements and smart infrastructure.</p></div>","PeriodicalId":626,"journal":{"name":"Journal of Electronic Materials","volume":"55 11","pages":"9751 - 9771"},"PeriodicalIF":2.8,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176654","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancement in Broadband Photodetection Performance of Cu:CdS/TiO2 Transparent Heterostructures via Systematic Doping","authors":"Tania Kalsi,&nbsp;Neha Sharma,&nbsp;Aakshi Chandel,&nbsp;Nupur Saxena,&nbsp;Pragati Kumar","doi":"10.1007/s11664-026-13167-4","DOIUrl":"10.1007/s11664-026-13167-4","url":null,"abstract":"<div><p>This study demonstrates a significant enhancement in the broadband spectral response of Cu_<i>x</i>Cd_1−<i>x</i>S/TiO₂ heterojunction photodetectors via systematic Cu doping (<i>x</i> = 0.00–0.05). Cu:CdS quantum dots synthesized by co-precipitation were integrated with TiO₂ nanoparticles, forming devices with optimized performance. The best-performing device (<i>TC</i>_<i>2</i>) achieved sensitivity of ~ 3.35 × 10⁴ %, resistivity of  ~ 534.25 A W⁻¹, external quantum efficiency of ~ 16.45 × 10⁴ %, and detectivity of ~ 1.52 × 10¹⁴ Jones at 400 nm, with fast response times (~96 ms turn-on, ~ 102 ms turn-off). Spectral coverage from ultraviolet (UV) (365 nm) to near-infrared (NIR) (845 nm) was attributable to heterojunction engineering and enhancement in performance parameters, with tunability in the highest sensitive wavelength resulting from Cu-induced band modulation that improved charge separation and mobility. These results highlight the significant potential of Cu-doped CdS/TiO₂ structures for high-performance multispectral photodetectors with broad spectral coverage, high sensitivity, and rapid response suitable for advanced optical applications.</p></div>","PeriodicalId":626,"journal":{"name":"Journal of Electronic Materials","volume":"55 11","pages":"9396 - 9407"},"PeriodicalIF":2.8,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176655","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"CTAB-Assisted Synthesis of Reduced Graphene Oxide/Polyaniline Nanofiber Composites for Supercapacitor Electrodes","authors":"Lukmanul Hakim Samada,&nbsp;Amru Daulay,&nbsp;Rega Permana,&nbsp;Abner Tonu Lema,&nbsp;Yassaroh Yassaroh,&nbsp;Fajar Nurjaman,&nbsp;Army Auliah,&nbsp;Maher A. Alraddadi,&nbsp;St Mardiana","doi":"10.1007/s11664-026-13153-w","DOIUrl":"10.1007/s11664-026-13153-w","url":null,"abstract":"<div><p>The primary obstacles to supercapacitors constructed from polyaniline (PANI) are particle agglomeration, which impedes electrochemical performance, and limited cyclic stability, which is a consequence of volume changes during the charge/discharge process. The slurry coating method and a cetyltrimethylammonium bromide (CTAB) surfactant are employed to synthesize reduced graphene oxide/polyaniline-cetyltrimethylammonium bromide (RGO/PANI-CTAB) composites in this research, which offers an effective approach. CTAB functions as a dispersing agent that prevents the clustering of RGO sheets and as a soft template that manipulates PANI into nanofibers. Consequently, the RGO/PANI-CTAB composite exhibits an impressive specific capacitance of 918 F/g at a current density of 1 A/g (three-electrode system), which is nearly three times greater than that of RGO/PANI without CTAB. Furthermore, this material remains at 95% of its initial capacitance after 1000 cycles at 5 A/g, with a series resistance (<i>R</i>_s) of 0.60 Ω. The device maintained 76% of its initial capacitance after 1000 cycles and operated consistently at 1.7 V in an asymmetric supercapacitor configuration featuring RGO, PANI-CTAB, and activated carbon by achieving an energy density of 18.9 Wh/kg and a power density of 850 W/kg at 1 A/g. The development of high-performance electrodes with excellent specific capacitance, which is among the highest reported for RGO/PANI composites for future energy storage systems, is facilitated by an effective CTAB-assisted approach.</p></div>","PeriodicalId":626,"journal":{"name":"Journal of Electronic Materials","volume":"55 11","pages":"9728 - 9750"},"PeriodicalIF":2.8,"publicationDate":"2026-09-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176780","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Superhydrophobic and Environmentally Robust Flexible Piezoresistive Sensors Based on a Ceramic Fiber Network of Hydroxyapatite Nanowires/Aluminum Silicate Fibers","authors":"Donghe Jia,&nbsp;Jingxiao Guo,&nbsp;Jiaying Huang,&nbsp;Honghuan Huang,&nbsp;Wenqing Shi,&nbsp;Zhen Hong,&nbsp;Yaping Xie,&nbsp;Mingshan Xue","doi":"10.1007/s11664-026-13185-2","DOIUrl":"10.1007/s11664-026-13185-2","url":null,"abstract":"<div><p>Flexible piezoresistive sensors for wearable applications often suffer from poor environmental stability against sweat, humidity, corrosive media, and mechanical fatigue. Herein, a superhydrophobic and robust flexible composite film is designed that integrates an inorganic fibrous network of hydroxyapatite nanowires (HAPNWs) and aluminum silicate fibers (ASF) with carbon black (CB) as a conductive phase. By optimizing CB content (2.5–15 wt.%), a uniform, continuous three-dimensional percolation network along the HAPNWs/ASF scaffold is obtained, avoiding incomplete pathways at lower loadings and severe agglomeration at higher loadings. The optimized CB-10% composite exhibits a balanced piezoresistive response (423 ± 18 ms/426 ± 22 ms response/recovery time at 90° bending) and stable signal output over a wide bending angle range (30°–120°). The polydimethylsiloxane (PDMS) modification imparts superhydrophobicity with self-cleaning capability. The coating withstands 14 tape-peeling cycles, 14 abrasion cycles, 3000 bending cycles, and 11 water-impact cycles while maintaining stable conductivity. Moreover, the film retains electrical performance after immersion in pH 3–11 solutions, UV irradiation, or heat treatment up to 250°C, demonstrating a clear decoupling of surface wettability degradation from core electrical function. When attached to human joints (finger, wrist, elbow, knee), the sensor reliably monitors real-time motion with distinct signal patterns. This work provides a design strategy for durable, environment-tolerant flexible piezoresistive sensors.</p><h3>Graphical Abstract</h3><div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":626,"journal":{"name":"Journal of Electronic Materials","volume":"55 11","pages":"9535 - 9553"},"PeriodicalIF":2.8,"publicationDate":"2026-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Analysis and Selection of Highly Efficient Halide Double Perovskite Solar Cell with Different Set of Transport Layers","authors":"Shatrughan Mishra,&nbsp;Pooja Lohia,&nbsp;D. K. Dwivedi,&nbsp;Akash Anand Verma","doi":"10.1007/s11664-026-13151-y","DOIUrl":"10.1007/s11664-026-13151-y","url":null,"abstract":"<div><p>This research provides a systematic numerical simulation and comparative performance analysis of lead-free halide double perovskite solar cells (DPSCs) using the solar cell capacitance simulator—1 dimensional (SCAPS-1D) simulation platform, exploring the choice of transport-layer, absorber materials, as well as the device engineering. We test FA₂BiCuI₆, Cs₂BiAgI₆, and Cs₂InAgBr₆DPSCs absorber materials with a variety of electron transport layer (ETL)/hole transport layer (HTL) combinations and operating conditions, comparing literature review alongside optimized configurations. Interface engineering represents the WS₂ and CBTS provides the highest simulated performance among the investigated transport-layer combinations, giving optimized power conversion efficiencies (PCE) of ~19.5% with DPSC-1(FA₂BiCuI₆), ~26.5% with DPSC-2(Cs₂BiAgI₆), and ~29% with DPSC-3(Cs₂InAgBr₆) under airmass (AM) 1.5 at 300 K. A parametric study has identified an optimized PCE of perovskite thickness near 0.6–0.8 μm maximizes absorption while preserving carrier extraction, and that defect densities (<i>N</i>_t) must be kept between 10¹⁴ cm⁻³ and 10¹⁵ cm⁻³ to avoid trap assisted recombination. Electrical optimization minimizes the series resistance (<i>R</i>_s) and maximizing shunt resistance (<i>R</i>_sh) preserves the values of fill factor (FF) and open-circuit voltage (<i>V</i>_OC), while bandgap tuning also balances the <i>V</i>_OC and <i>J</i>_SC. Temperature-dependent performance analysis results show the WS₂ and copper barium tin sulfide (CBTS) couple maintains the modest efficiency and thermal robustness at elevated temperatures (300–350 K). The optimized Cs₂InAgBr₆-based DPSC exhibits a simulated PCE of approximately 29% under the adopted SCAPS-1D simulation conditions. This value should be interpreted as an optimized theoretical performance estimate rather than an experimentally demonstrated efficiency. The predicted performance is based on optimized material parameters, controlled defect densities, favorable band alignment, and other assumed device conditions. The findings are useful in offering the practical design principles, transport layer pairing, defect passivation, thickness control, and bandgap engineering to offer guide experimental validation and scalable production of robust DPSCs.</p></div>","PeriodicalId":626,"journal":{"name":"Journal of Electronic Materials","volume":"55 11","pages":"9706 - 9727"},"PeriodicalIF":2.8,"publicationDate":"2026-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176817","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nondestructive Identification of Pure Threading Screw Dislocations in GaN Crystals by Combined Birefringence Imaging and Synchrotron X-ray Topography","authors":"Shunta Harada,&nbsp;Michio Kawase,&nbsp;Keisuke Seo,&nbsp;Yasutaka Matsubara,&nbsp;Seiya Mizutani,&nbsp;Yuya Mizutani,&nbsp;Seiji Mizutani,&nbsp;Kenta Murayama","doi":"10.1007/s11664-026-13148-7","DOIUrl":"10.1007/s11664-026-13148-7","url":null,"abstract":"<div><p>This Brief Communication demonstrates a nondestructive criterion for identifying pure threading screw dislocations (TSDs) in GaN substrates by combining polarized light microscopy (PLM) and synchrotron x-ray topography (XRT). XRT using <i>g</i> = 0006 visualizes threading dislocations with screw components, whereas PLM is sensitive to in-plane shear stress associated with edge components. Therefore, threading dislocations observed by XRT but lacking corresponding PLM contrast can be assigned to pure TSDs by the proposed combined criterion. In a low-dislocation-density region, three of 25 clearly resolved threading dislocations with screw components were identified as pure TSDs. Although the present dataset is limited to a proof-of-concept observation, this combined XRT/PLM approach provides a practical nondestructive route for screening device-relevant TSDs in GaN substrates.</p></div>","PeriodicalId":626,"journal":{"name":"Journal of Electronic Materials","volume":"55 11","pages":"9334 - 9337"},"PeriodicalIF":2.8,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176763","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Nickel Nanoparticle Loaded on N-Doped Carbon-Based Electrochemical Sensor for Highly Sensitive Detection of Cellular Hydrogen Peroxide","authors":"Pengcheng Li,&nbsp;Guobin Yang,&nbsp;Xueqian Xiao,&nbsp;Lun Wu,&nbsp;Likai Wang,&nbsp;Yingsong Hu,&nbsp;Hua Zhang,&nbsp;Yulin Zhang","doi":"10.1007/s11664-026-13156-7","DOIUrl":"10.1007/s11664-026-13156-7","url":null,"abstract":"<div><p>Hydrogen peroxide (H₂O₂) is a crucial reactive oxygen species and a vital cellular signaling molecule, and its dysregulation is linked to various diseases, including cancer. Sensitive detection of H₂O₂ is therefore essential for biomedical research and clinical diagnostics. Herein, we report an electrochemical sensor based on a nickel nanoparticle loaded on nitrogen-doped carbon (Ni-NC) for highly sensitive and selective detection of cellular hydrogen peroxide (H₂O₂). The Ni-NC material exhibits excellent peroxidase (POD)-like activity, which enables efficient catalytic reduction of H₂O₂ at a low applied potential of −0.05 V. This low-potential operation effectively suppresses electrochemical interference from coexisting electroactive species, thereby significantly enhancing the specificity of the sensor. The electrochemical sensor demonstrates a wide linear range (1–300 μM), a low detection limit (0.26 μM), and a rapid amperometric response. Moreover, benefiting from its high selectivity and biocompatibility, the sensor successfully monitors H₂O₂ release from live A549 lung cancer cells in real time. This work demonstrates that using Ni-NC with POD-like activity as a modified electrode material can effectively lower the applied potential in the current–time (<i>I–t</i>) detection mode, thereby enhancing the specificity of the method and positioning the platform as a promising tool for accurate H₂O₂ detection in complex biological environments.</p></div>","PeriodicalId":626,"journal":{"name":"Journal of Electronic Materials","volume":"55 11","pages":"9521 - 9534"},"PeriodicalIF":2.8,"publicationDate":"2026-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"149176766","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}