Organic Electronics最新文献_第2页

The role of water in tailoring thermoelectric PEDOT:PSS films 水在热电PEDOT:PSS薄膜裁剪中的作用

IF 2.6 4区工程技术

Organic Electronics Pub Date : 2026-03-01 Epub Date: 2026-01-19 DOI: 10.1016/j.orgel.2026.107384

Yannan Lu , Al Jumlat Ahmed , Daniel Liang , Xingdong Wang , David James Young

{"title":"The role of water in tailoring thermoelectric PEDOT:PSS films","authors":"Yannan Lu , Al Jumlat Ahmed , Daniel Liang , Xingdong Wang , David James Young","doi":"10.1016/j.orgel.2026.107384","DOIUrl":"10.1016/j.orgel.2026.107384","url":null,"abstract":"<div><div>The conductive polymer polyethylenedioxythiophene doped with polystyrene sulfonate (PEDOT:PSS) is one of the most studied organic thermoelectric materials thanks to its low cost, high electrical conductivity, and biocompatibility. There are conflicting explanations for the changed morphology and the phase segregation of PEDOT and PSS that leads to improved TE performance through alleviating the trade-off between electrical conductivity and Seebeck coefficient (thermoelectric voltage in response to temperature difference). In the study, we demonstrated the TE properties of PEDOT:PSS films were improved by a simple process of sequential hydrothermal annealing and soaking in water, resulting in a simultaneous increase in both electrical conductivity (σ) and Seebeck coefficient (S). The optimized conductivity σ and Seebeck coefficient were ∼1100 S cm<sup>−1</sup> and ∼25 μV K<sup>−1</sup>, respectively, corresponding to a power factor (PF) of ∼70 μW m<sup>−1</sup> K<sup>− 2</sup>. Hydrothermal annealing led to a conformational change from a core-shell structure to inter-bridging PEDOT-rich fibres. Soaking minimised the hydrophilic dopant PSS volume that inhibits charge transport. This two-step treatment changed the PEDOT:PSS thin films from hygroscopic to hydrophobic, and increased charge carrier mobility by the removal of PSS-rich regions, phase separation, and conformational and morphological change. The mechanism behind this that improved Seebeck coefficient is attributed to a more ordered structure and increased mobility due to physical dedoping, rather than a change in carrier concentration or doping level. This protocol permits tailoring of thermoelectric performance and charge transport employing a more biocompatible treatment that is suitable for mass-production of biocompatible, low-cost biosensors and large-area thermoelectric power generators.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"150 ","pages":"Article 107384"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146035846","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}

引用次数: 0

Dual-emissive carbon dots for detection of chloramphenicol in tap water 双发射碳点用于自来水中氯霉素的检测

IF 2.6 4区工程技术

Organic Electronics Pub Date : 2026-03-01 Epub Date: 2026-01-13 DOI: 10.1016/j.orgel.2026.107383

Abdellateif Okkod, Xiaoming Yang

{"title":"Dual-emissive carbon dots for detection of chloramphenicol in tap water","authors":"Abdellateif Okkod, Xiaoming Yang","doi":"10.1016/j.orgel.2026.107383","DOIUrl":"10.1016/j.orgel.2026.107383","url":null,"abstract":"<div><div>Chloramphenicol is a broad-spectrum antibiotic, continues to raise concerns when it appears as a residue in water systems, given both its health risks and regulatory restrictions; developing simple and reliable detection strategies is therefore of practical importance. In this work, we designed a dual-emissive carbon dot (CDs) sensor for monitoring traces of chloramphenicol in tap water. The Caron dots were prepared through a one-step hydrothermal synthesis using cyanuric acid and maleic acid; the yielding nanomaterials has strong fluorescence and room-temperature phosphorescence (RTP). Structural and surface analyses indicated uniform morphology, a crystalline framework that appears stable, and functional surface groups favorable for sensing applications; the optical signals of fluorescence and RTP of the CDs selectively quench in the presence of chloramphenicol. That quenching effect gave us a reliable way to quantify the drug concentration. The detection limits we calculated were 0.016 μM with fluorescence and about 0.028 μM with RTP. When we tried the method on spiked tap water, the recoveries landed between 103.96 % and 98.18 %, with relative standard deviations under 5 %. In practice, that suggests the system is both accurate and reasonably reproducible. The performance here benefits from having two optical readouts instead of one-basically a built-in cross-check, which reduces the chance of false positives. At the same time, it may not yet rival high-end chromatographic techniques in absolute certainty, but it looks like a practical and lower-cost option for routine screening. The dual-signal approach feels especially useful for environmental monitoring, where samples are messy and reliability matters as much as sensitivity.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"150 ","pages":"Article 107383"},"PeriodicalIF":2.6,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145975559","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}

引用次数: 0

Two terminal artificial synaptic devices from self-assembled, crystalline thin film of an organic small molecule for neuromorphic applications 两个末端人工突触装置，由自组装的有机小分子晶体薄膜制成，用于神经形态学应用

IF 2.6 4区工程技术

Organic Electronics Pub Date : 2026-02-01 Epub Date: 2025-12-02 DOI: 10.1016/j.orgel.2025.107364

Nayan Pandit, Rajkumar Mandal, Ankita Pal, Arka Mandal, Rajib Nath, Biswanath Mukherjee

{"title":"Two terminal artificial synaptic devices from self-assembled, crystalline thin film of an organic small molecule for neuromorphic applications","authors":"Nayan Pandit, Rajkumar Mandal, Ankita Pal, Arka Mandal, Rajib Nath, Biswanath Mukherjee","doi":"10.1016/j.orgel.2025.107364","DOIUrl":"10.1016/j.orgel.2025.107364","url":null,"abstract":"<div><div>Two-terminal memristors exhibiting voltage-induced resistive switching have emerged as potential device for neuromorphic computing. The simple device architecture with crossbar array pattern of such device is ideal for implementing various synaptic functions and adaptive learning. Herein, we have successfully fabricated organic memristor devices by utilizing self-assembled crystalline thin film of <em>7,7,8,8-</em>tetracyanoquinodimethane (TCNQ) in ITO/TCNQ/Al configuration. The device exhibited reproducible resistive switching at bias < ± 3V with current On/Off ratio ∼10<sup>3</sup> and switching time <2 ns. The memory retention characteristics of the device exceeded 10<sup>3</sup> cycles with stable switching performances. Analysis of the charge transport mechanism of the device via fitting of <em>I–V</em> characteristics using established conduction models confirmed that trap-controlled space-charge limited current (SCLC) governs the switching behavior and underpins the bistable performance of the memory device. The devices demonstrate great promise for use as artificial synapses and in low-energy neuromorphic computation applications. Various biological synaptic functions, such as, LTP, LTD, PPF, SVDP, STDP and EPSC have been successfully emulated using this artificial synaptic device with energy consumption of 197 nJ.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"149 ","pages":"Article 107364"},"PeriodicalIF":2.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145665539","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}

引用次数: 0

Highly-efficient narrowband green OLEDs with suppressed efficiency roll-off enabled by through-space charge transfer type TADF sensitizers 通过空间电荷转移型TADF敏化剂实现抑制效率滚降的高效窄带绿色oled

IF 2.6 4区工程技术

Organic Electronics Pub Date : 2026-02-01 Epub Date: 2025-12-24 DOI: 10.1016/j.orgel.2025.107369

Xingyu Zang , Qing Zhang , Xiaolong Liu , Tianbao Gong , Jungang Cao , Chenguang Wang , Jinbei Wei

{"title":"Highly-efficient narrowband green OLEDs with suppressed efficiency roll-off enabled by through-space charge transfer type TADF sensitizers","authors":"Xingyu Zang , Qing Zhang , Xiaolong Liu , Tianbao Gong , Jungang Cao , Chenguang Wang , Jinbei Wei","doi":"10.1016/j.orgel.2025.107369","DOIUrl":"10.1016/j.orgel.2025.107369","url":null,"abstract":"<div><div>Multiple resonance thermally activated delayed fluorescence (MR-TADF) materials have emerged as highly promising emitters for organic light-emitting diodes (OLEDs), owing to their narrowband emission and exceptional luminescence efficiency. Nevertheless, most MR-TADF emitters suffer from severe efficiency roll-off and insufficient exciton utilization efficiency due to aggregation-caused quenching (ACQ) and intrinsically long triplet exciton lifetimes. To address these limitations, we developed a series of through-space charge transfer (TSCT) TADF sensitizers, which exhibit a minimal singlet-triplet energy gap of 0.06 eV and a rapid reverse intersystem crossing rate (<em>k</em><sub>RISC</sub>) of 3.8 × 10<sup>5</sup> s<sup>−1</sup>. By employing these TSCT-TADF sensitizers in MR-TADF systems to recycle triplet excitons, the resulting TADF-sensitized fluorescent OLED (TSF-OLED) achieved narrowband green emission with a CIE<sub>y</sub> coordinate of 0.71, a maximum external quantum efficiency (EQE<sub>max</sub>) exceeding 35 %, and a suppressed efficiency roll-off of only 26.9 % at 1000 cd m<sup>−2</sup>.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"149 ","pages":"Article 107369"},"PeriodicalIF":2.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837154","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}

引用次数: 0

Isomerized solid additive yields stable organic solar cells 异构固体添加剂制备稳定的有机太阳能电池

IF 2.6 4区工程技术

Organic Electronics Pub Date : 2026-02-01 Epub Date: 2025-12-22 DOI: 10.1016/j.orgel.2025.107368

Yexin Le , Jiafeng Zhang , Lianjie Zhang, Xing Chen, Junwu Chen

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Gate-voltage-dependent ionic diffusion and transient dynamics in organic electrochemical transistors 有机电化学晶体管中依赖栅极电压的离子扩散和瞬态动力学

IF 2.6 4区工程技术

Organic Electronics Pub Date : 2026-02-01 Epub Date: 2025-12-16 DOI: 10.1016/j.orgel.2025.107367

Heyi Zhang , Juan Bisquert

{"title":"Gate-voltage-dependent ionic diffusion and transient dynamics in organic electrochemical transistors","authors":"Heyi Zhang , Juan Bisquert","doi":"10.1016/j.orgel.2025.107367","DOIUrl":"10.1016/j.orgel.2025.107367","url":null,"abstract":"<div><div>Organic electrochemical transistors (OECTs) exhibit transient current responses governed by the interplay between ionic motion and electronic transport in the polymer channel. In this work, transient behaviours of PEDOT:PSS OECTs are investigated under a step change in gate voltage. The gate current consistently decays exponentially across different drain biases, allowing extraction of the ionic diffusion time constant <span><math><mrow><msub><mi>τ</mi><mi>d</mi></msub></mrow></math></span> via comparison with an analytical model. In contrast, drain current transients show bias- and polarity-dependent temporal profiles, reflecting the modulation of lateral transit of electronic carriers by the drain-source potential. Despite these variations, the extracted decay constants remain consistent with those from gate-current analysis. These results demonstrate that vertical ionic diffusion predominantly determines the device's intrinsic temporal response and lateral electronic transport shapes the transient characteristics, providing a clear physical basis for interpreting time-dependent behaviours in mixed ionic–electronic conductors.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"149 ","pages":"Article 107367"},"PeriodicalIF":2.6,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145788314","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}

引用次数: 0

Impedance spectroscopy analysis of interfacial charges in aged thermally activated delayed fluorescent OLED 老化热激活延迟荧光OLED界面电荷的阻抗谱分析

IF 2.6 4区工程技术

Organic Electronics Pub Date : 2026-01-01 Epub Date: 2025-10-19 DOI: 10.1016/j.orgel.2025.107349

Jae-Yong Park , Younguk Choi , Akeem Raji , So-Young Boo , Seonghwan An , Si-Eun Park , Woon-Ha Lee , Dong-Jun Kim , Hae-Won Lee , Wooik Jung , Jonghee Lee , Jae-Hyun Lee

{"title":"Impedance spectroscopy analysis of interfacial charges in aged thermally activated delayed fluorescent OLED","authors":"Jae-Yong Park , Younguk Choi , Akeem Raji , So-Young Boo , Seonghwan An , Si-Eun Park , Woon-Ha Lee , Dong-Jun Kim , Hae-Won Lee , Wooik Jung , Jonghee Lee , Jae-Hyun Lee","doi":"10.1016/j.orgel.2025.107349","DOIUrl":"10.1016/j.orgel.2025.107349","url":null,"abstract":"<div><div>In this study, the charge injection and accumulation characteristics of thermally activated delayed fluorescent (TADF) organic light-emitting diodes (OLEDs) comprising a 1,2,3,5-tetrakis(carbazol-9-yl)-4,6-dicyanobenzene (4Cz-IPN) emitter were measured before and after device degradation. To investigate the degradation-induced spontaneous orientation polarization (SOP) characteristics of the OLED, the charge carrier dynamics and operational stability of pristine and aged devices were compared using impedance spectroscopy (IS). Capacitance–voltage (<em>C-V</em>) and capacitance–frequency (<em>C-F</em>) analyses revealed the presence of negative interfacial charges induced by the spontaneous alignment of the TADF-emitting and electron-transport layers. Equivalent resistance–capacitance (<em>R-C</em>) circuit simulations quantitatively reproduced the experimental <em>C-F</em> curve and determined the relaxation frequency, confirming that aged devices have a higher resistance and reduced interfacial charges. The changes in charge accumulation at the interfaces and their associated electrical characteristics were evaluated to understand their impact on the lifetime and operational stability of the device. A significant decrease in the luminous efficiency was observed in the aged devices, which was attributed to reduced charge injection and transport into the emitting layer.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"148 ","pages":"Article 107349"},"PeriodicalIF":2.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145413612","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}

引用次数: 0

Coordination-based doping of MEH-PPV with La(TFSI)3 enables air-free conductivity and stable performance in perovskite solar cells La(TFSI)3配位掺杂MEH-PPV使钙钛矿太阳能电池具有无空气导电性和稳定的性能

IF 2.6 4区工程技术

Organic Electronics Pub Date : 2026-01-01 Epub Date: 2025-10-21 DOI: 10.1016/j.orgel.2025.107351

Seth W. McPherson , Yeh-Chuan Chou , Insoo Shin , Stephen A. Maclean , Dmytro Nykypanchuk , Tai-de Li , Chieh-Ting Lin , Jaemin Kong , Jason A. Röhr , André D. Taylor

{"title":"Coordination-based doping of MEH-PPV with La(TFSI)3 enables air-free conductivity and stable performance in perovskite solar cells","authors":"Seth W. McPherson , Yeh-Chuan Chou , Insoo Shin , Stephen A. Maclean , Dmytro Nykypanchuk , Tai-de Li , Chieh-Ting Lin , Jaemin Kong , Jason A. Röhr , André D. Taylor","doi":"10.1016/j.orgel.2025.107351","DOIUrl":"10.1016/j.orgel.2025.107351","url":null,"abstract":"<div><div>Achieving high electrical conductivity in conjugated polymers without negatively impacting morphology and stability remains a central challenge in the development of organic optoelectronic devices. Here, we demonstrate that doping MEH-PPV with lanthanum bistriflimide [La(TFSI)<sub>3</sub>] results in a conductivity enhancement exceeding six orders of magnitude under fully inert conditions. Unlike monovalent dopants such as LiTFSI, which require environmental activation and lead to morphological defects, La(TFSI)<sub>3</sub> enables oxygen-independent conductivity by forming multidentate coordination complexes with polymer sidechains. Spectroscopic analyses (FTIR, Raman, PL) indicate that La<sup>3+</sup> induces crosslinking and suppresses emissive disorder, promoting interchain charge hopping even without generating polarons. Morphological studies show that La<sup>3+</sup> doping eliminates pinholes and produces structurally cohesive films, in contrast to the inhomogeneous and unstable films produced with LiTFSI. When used as a hole transport layer in perovskite solar cells, La(TFSI)<sub>3</sub> doped MEH-PPV increases the power conversion efficiency from 13.05 % to 18.50 % and enables devices that retain 100 % of their efficiency after 1000 h of inert storage. These results highlight a coordination-driven, air-free doping strategy for enabling durable, high-performance organic electronics.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"148 ","pages":"Article 107351"},"PeriodicalIF":2.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145463557","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}

引用次数: 0

Blue narrowband emission in aza-boron-diquinomethene complexes via steric engineering to reduce vibronic shoulder 利用空间位阻工程减少氮杂硼二醌配合物的蓝色窄带发射

IF 2.6 4区工程技术

Organic Electronics Pub Date : 2026-01-01 Epub Date: 2025-11-24 DOI: 10.1016/j.orgel.2025.107359

Jinan Tang , Bichen Wang , Renyin Zhou , Baoping Lin , Yueming Sun , Guimin Zhao

{"title":"Blue narrowband emission in aza-boron-diquinomethene complexes via steric engineering to reduce vibronic shoulder","authors":"Jinan Tang , Bichen Wang , Renyin Zhou , Baoping Lin , Yueming Sun , Guimin Zhao","doi":"10.1016/j.orgel.2025.107359","DOIUrl":"10.1016/j.orgel.2025.107359","url":null,"abstract":"<div><div>Blue constitutes one of the three primary colors essential for full-color emission, rendering efficient and stable blue emitters indispensable for high-color-purity organic light-emitting diodes (OLEDs). Aza-boron-diquinomethene (aza-BODIQU) complexes are known to exhibit exceptionally narrow 0-0 emission as high-performance blue fluorescent emitters; however, their color purity is compromised by prominent 0–1 vibronic peaks. Herein, three aza-BODIQU derivatives Ph-BF, 3Ph-BF, and 4Ph-BF are designed to achieve narrowband emission by incorporating non-emissive steric hindrance groups, which effectively attenuate emission sideband and mitigate aggregation-induced spectral redshift and broadening. In solution, these emitters deliver emission peaks at 462, 463, 461 nm with full widths at half maximum (FWHM) as narrow as 12 nm and photoluminescence quantum yields (PLQYs) of 0.91, 0.92 and 0.94. In both non-sensitized and sensitized doped films, progressively bulkier substituents enhance resistance to concentration quenching, yielding markedly reduced redshifts at elevated doping concentrations. Leveraging dendritic thermally activated delayed fluorescence (TADF) sensitization, the resulting devices exhibit narrowband electroluminescence. With increasing steric bulk of the modifying groups, electroluminescence FWHM progressively narrows to 50, 46, and 22 nm, respectively. Correspondingly, maximum external quantum efficiencies (EQE<sub>max</sub>) reach 0.7 %, 1.8 %, and 2.1 %, accompanied by peak power efficiencies of 0.7, 2.4, and 2.8 lm W<sup>−1</sup> and current efficiencies of 2.2, 5.8, and 6.8 cd A<sup>−1</sup>.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"148 ","pages":"Article 107359"},"PeriodicalIF":2.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145620211","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}

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Dual-oxide WO3-Based ETLs for enhanced charge transport and stability in CsPbIBr2 perovskite solar cells 基于wo3的双氧化物ETLs增强CsPbIBr2钙钛矿太阳能电池的电荷输运和稳定性

IF 2.6 4区工程技术

Organic Electronics Pub Date : 2026-01-01 Epub Date: 2025-10-30 DOI: 10.1016/j.orgel.2025.107354

Ali Mujtaba , M.I. Khan , Mongi Amami , Badriah S. Almutairi , Shahbaz Ahmed Khan

{"title":"Dual-oxide WO3-Based ETLs for enhanced charge transport and stability in CsPbIBr2 perovskite solar cells","authors":"Ali Mujtaba , M.I. Khan , Mongi Amami , Badriah S. Almutairi , Shahbaz Ahmed Khan","doi":"10.1016/j.orgel.2025.107354","DOIUrl":"10.1016/j.orgel.2025.107354","url":null,"abstract":"<div><div>This study is significant for introducing WO<sub>3</sub>-based composite ETLs (ZrO<sub>2</sub>-WO<sub>3</sub> and SnO<sub>2</sub>-WO<sub>3</sub>) that synergistically enhance charge transport, reduce recombination, and improve stability in CsPbIBr<sub>2</sub> perovskite solar cells. The novelty lies in the dual-oxide approach, which leverages the complementary structural and electronic properties of WO<sub>3</sub> with ZrO<sub>2</sub> and SnO<sub>2</sub> to achieve higher device efficiency. X-ray diffraction (XRD) analysis confirmed the successful integration of WO<sub>3</sub>-based films, with calculated crystallite sizes of 36.5 nm for ZrO<sub>2</sub>-WO<sub>3</sub> and 41.8 nm for SnO<sub>2</sub>-WO<sub>3</sub>, indicating improved crystallinity for the SnO<sub>2</sub>-based film. Scanning electron microscope (SEM) showed that SnO<sub>2</sub>-WO<sub>3</sub> film exhibits a smoother, more uniform morphology with smaller grain sizes compared to the ZrO<sub>2</sub>-WO<sub>3</sub> film. Raman spectroscopy validated the phase purity and chemical stability of the prepared films. SEM morphology showed the reduced average grain size for SnO<sub>2</sub>-WO<sub>3</sub> film. UV–Vis (UV–vis) spectroscopy revealed reduced band gaps of 2.71 eV and 2.69 eV for ZrO<sub>2</sub>-WO<sub>3</sub> and SnO<sub>2</sub>-WO<sub>3</sub>, respectively, favoring efficient charge transport. Photoluminescence (PL) measurements demonstrated enhanced charge carrier separation. Current-density voltage (J-V) characteristics showed a higher power conversion efficiency of 9.35 % for SnO<sub>2</sub>-WO<sub>3</sub> compared to 8.26 % for ZrO<sub>2</sub>-WO<sub>3</sub>. Electrochemical impedance spectroscopy (EIS) revealed reduced charge transfer resistance and increased recombination resistance (1769 Ω) for SnO<sub>2</sub>-WO<sub>3</sub>-based devices. These findings highlight the potential of WO<sub>3</sub>-based ETLs in PSCs for future high-efficiency photovoltaic applications.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"148 ","pages":"Article 107354"},"PeriodicalIF":2.6,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145463559","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}

引用次数: 0