Organic Electronics最新文献

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High-efficiency quantum dot light-emitting devices with dual hole injection layers 具有双孔注入层的高效量子点发光器件
IF 2.6 4区 工程技术
Organic Electronics Pub Date : 2025-11-01 Epub Date: 2025-08-30 DOI: 10.1016/j.orgel.2025.107329
Zhoujian Fan , Kuibao Yu , Hailong Hu
{"title":"High-efficiency quantum dot light-emitting devices with dual hole injection layers","authors":"Zhoujian Fan ,&nbsp;Kuibao Yu ,&nbsp;Hailong Hu","doi":"10.1016/j.orgel.2025.107329","DOIUrl":"10.1016/j.orgel.2025.107329","url":null,"abstract":"<div><div>Quantum dot light-emitting devices (QLEDs) exhibit unique advantages for high-resolution display applications. However, as pixel size decreases, challenges including insufficient hole injection and leakage current become increasingly pronounced, resulting in significant degradation in device performance. Herein, dual hole injection layers are constructed by self-assembly of an organic small molecular layer on conventional PEDOT:PSS to smooth the potential barrier, thus achieving more balanced carrier injection. An ultrafine inter-pixel isolation structure is designed as a charge blocking layer surrounding the photolithograpic pixels, with the purpose of effectively mitigating leakage current in the non-emitting region. The high-resolution devices show a high external quantum efficiency (EQE) of 19.6 % and a peak power efficiency (PE) of 20.63 lm/W, both of which significantly exceed the performance of the control device (EQE = 14.6 %, PE = 10.54 lm/W).</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"146 ","pages":"Article 107329"},"PeriodicalIF":2.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144920263","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 orange and white organic light-emitting diodes with low efficiency roll-off based on a novel exciplex host 基于新型激复体的低滚转高效橙白有机发光二极管
IF 2.6 4区 工程技术
Organic Electronics Pub Date : 2025-11-01 Epub Date: 2025-08-26 DOI: 10.1016/j.orgel.2025.107327
Mengmeng Zhang , Yafei Xie , Qianqian Gu , Xiaolin Hu , Jintao Wang , Liping Yang , Ren Sheng , Ping Chen
{"title":"Highly efficient orange and white organic light-emitting diodes with low efficiency roll-off based on a novel exciplex host","authors":"Mengmeng Zhang ,&nbsp;Yafei Xie ,&nbsp;Qianqian Gu ,&nbsp;Xiaolin Hu ,&nbsp;Jintao Wang ,&nbsp;Liping Yang ,&nbsp;Ren Sheng ,&nbsp;Ping Chen","doi":"10.1016/j.orgel.2025.107327","DOIUrl":"10.1016/j.orgel.2025.107327","url":null,"abstract":"<div><div>Realizing highly efficient organic light-emitting diodes (OLEDs) with low efficiency roll-off through exciplex systems remains challenging due to mismatched transport property between donor and acceptor. Herein, a novel exciplex co-host system constructed by 1,1-Bis[(di-4-tolylamino) phenyl] cyclohexane (TAPC) and 2,4-diphenyl-6-(9,9′-spirobi[9H-fluoren]-3-yl)-1,3,5-Triazine (SF3-TRZ) is applied to design simplified orange and white OLEDs with high efficiency and low efficiency roll-offs. The result orange phosphorescent OLED is realized by doping orange dopant into exciplex host, demonstrating outstanding characteristics with a maximum current efficiency of 81.3 cd/A and a maximum power efficiency of 84.7 lm/W. By further inserting a blue emitting layer, the white OLED with stable spectra achieves a current efficiency of 62.1 cd/A with an extremely low roll-off, which represents one of the smallest values reported for exciplex co-host white OLEDs. The superior performance of the device is attributed to the balanced carriers transport and the simplified architecture design. The architecture provides a promising solution for developing high-performance OLEDs toward practical solid-state lighting applications.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"146 ","pages":"Article 107327"},"PeriodicalIF":2.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144903883","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
The analysis of the electroluminescence performance of multi-RISC channel single-emissive-layer organic light-emitting diode 多risc通道单发射层有机发光二极管的电致发光性能分析
IF 2.6 4区 工程技术
Organic Electronics Pub Date : 2025-11-01 Epub Date: 2025-08-11 DOI: 10.1016/j.orgel.2025.107323
Ruixing Wanghe, Zeyu Jia, Guangyuan Wang
{"title":"The analysis of the electroluminescence performance of multi-RISC channel single-emissive-layer organic light-emitting diode","authors":"Ruixing Wanghe,&nbsp;Zeyu Jia,&nbsp;Guangyuan Wang","doi":"10.1016/j.orgel.2025.107323","DOIUrl":"10.1016/j.orgel.2025.107323","url":null,"abstract":"<div><div>With the advancement of technology, an increasing number of high efficiency organic light-emitting diode (OLED) devices utilizing multi-reverse intersystem crossing (RISC) channels have been reported. The multi-RISC channel strategy has emerged as a highly feasible OLED design approach. However, the analysis of multi-RISC channel single-emissive-layer OLEDs still faces numerous challenges due to the presence of multiple different kinds of molecules in the EML. Herein, based on experiments, molecular dynamics (MD) simulations, and quantum chemical calculations, a systematic analysis has been conducted on the impact of doping concentration on the electroluminescence performance of multi-RISC channel single-emissive-layer OLEDs. It is believed that the impact of doping concentration on the electroluminescence performance of multi-RISC channel single-emissive-layer OLEDs is attributed to the charge carrier recombination order in the emitting layer, the fluctuation of the excited state energy level of exciplex caused by the change in molecular polarity surrounding the emissive exciplex, and the transition between different efficiency roll-off models. This work provides new pathways and analysis methods to enhancing the efficiency of multi-RISC channel single-emissive-layer OLEDs.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"146 ","pages":"Article 107323"},"PeriodicalIF":2.6,"publicationDate":"2025-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144828367","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
FAPbI3 phase transformation mechanism based on quantum dynamics 基于量子动力学的FAPbI3相变机理
IF 2.7 4区 工程技术
Organic Electronics Pub Date : 2025-10-01 Epub Date: 2025-07-23 DOI: 10.1016/j.orgel.2025.107307
Yidong Zhao , Zihe Cao , Yi Yang , Xiaolu Chen , Anyu Jiang , Qiang Lu , Bing Zhang
{"title":"FAPbI3 phase transformation mechanism based on quantum dynamics","authors":"Yidong Zhao ,&nbsp;Zihe Cao ,&nbsp;Yi Yang ,&nbsp;Xiaolu Chen ,&nbsp;Anyu Jiang ,&nbsp;Qiang Lu ,&nbsp;Bing Zhang","doi":"10.1016/j.orgel.2025.107307","DOIUrl":"10.1016/j.orgel.2025.107307","url":null,"abstract":"<div><div>The research aims to avoid the transformation of α-FAPbI<sub>3</sub> with favorable photoelectric conversion performance into a non-perovskite δ-phase that completely loses photoactivity. To this end, it is necessary to understand its structural stability under different conditions and the mechanisms underpinning both the phase transformation and associated inhibition. Firstly, Ab Initio Molecular Dynamics (AIMD) is used to explore the evolution of the crystal structure of α-FAPbI<sub>3</sub> across different temperature ranges and space limitations. Results show that space limitation exerts a better inhibitory effect on α-FAPbI<sub>3</sub> phase transformation than increasing the temperature. Then, parameters, including the lattice parameters and unit cell angle, are used to analyze the mechanism underlying the difference in the phase transformation process under different conditions. Finally, it is revealed that space limitation can better maintain the presence of an α-FAPbI<sub>3</sub> phase when compared with an increase in temperature, thus clarifying the reason for the inhibition of such a phase transformation.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"145 ","pages":"Article 107307"},"PeriodicalIF":2.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703521","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
Mem-capacitance enabled volatile switching in Dopamine@Agarose-based devices Dopamine@Agarose-based器件中memo电容使能的易失性开关
IF 2.7 4区 工程技术
Organic Electronics Pub Date : 2025-10-01 Epub Date: 2025-07-19 DOI: 10.1016/j.orgel.2025.107305
Swarali K. Joshi , Trishala Desai , Kasturi A. Rokade , Omkar Y. Pawar , Omkar A. Patil , Akash V. Fulari , Sunil S. Nirmale , Rajanish K. Kamat , Chitra Gurnani , Sooman Lim , Tukaram D. Dongale
{"title":"Mem-capacitance enabled volatile switching in Dopamine@Agarose-based devices","authors":"Swarali K. Joshi ,&nbsp;Trishala Desai ,&nbsp;Kasturi A. Rokade ,&nbsp;Omkar Y. Pawar ,&nbsp;Omkar A. Patil ,&nbsp;Akash V. Fulari ,&nbsp;Sunil S. Nirmale ,&nbsp;Rajanish K. Kamat ,&nbsp;Chitra Gurnani ,&nbsp;Sooman Lim ,&nbsp;Tukaram D. Dongale","doi":"10.1016/j.orgel.2025.107305","DOIUrl":"10.1016/j.orgel.2025.107305","url":null,"abstract":"<div><div>The development of biocompatible, environmentally friendly, and low-cost functional switching materials for memory and synaptic learning devices has gained importance in recent years. Dopamine is a naturally occurring biomaterial that has been used in various fields. In the present study, dopamine@agarose was used as a switching layer, sandwiched between Ag top and FTO bottom electrodes to form the Ag/dopamine@agarose/FTO device. The agarose was utilized due to its natural polymeric properties and its functionality as a binder. The switching layer was characterized using UV–vis spectroscopy, Fourier transform infrared spectroscopy, atomic force microscopy, and field emission scanning electron microscopy. The non-pinched hysteresis curve revealed the mem-capacitive behaviour of the device, which was corroborated using electrochemical and frequency-dependent capacitance-voltage studies. The charge-flux properties depicted the non-ideal memristor nature of the device. Furthermore, the cumulative probability and Weibull distribution were studied to understand the switching variability. The fabricated device demonstrates a stable multilevel volatile memory effect over 15000 cycles. The results assert that dopamine can be a potential candidate for developing sustainable volatile memory devices.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"145 ","pages":"Article 107305"},"PeriodicalIF":2.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144687137","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
Leveraging rhodamine-terminated small molecule acceptors for high open-circuit voltage and improved efficiency in organic solar cells 利用罗丹明端接小分子受体的高开路电压和提高效率的有机太阳能电池
IF 2.6 4区 工程技术
Organic Electronics Pub Date : 2025-10-01 Epub Date: 2025-07-30 DOI: 10.1016/j.orgel.2025.107311
Jiangtong Zhao , Yiming Shao , Rui Sun , Weiwei Wu , Bo Xiao , Ji Wan , Youdi Zhang , Jie Min
{"title":"Leveraging rhodamine-terminated small molecule acceptors for high open-circuit voltage and improved efficiency in organic solar cells","authors":"Jiangtong Zhao ,&nbsp;Yiming Shao ,&nbsp;Rui Sun ,&nbsp;Weiwei Wu ,&nbsp;Bo Xiao ,&nbsp;Ji Wan ,&nbsp;Youdi Zhang ,&nbsp;Jie Min","doi":"10.1016/j.orgel.2025.107311","DOIUrl":"10.1016/j.orgel.2025.107311","url":null,"abstract":"<div><div>The asymmetric molecular design strategy has been proven to be an effective method to improve the photovoltaic performance of organic solar cells. In this work, to extend the pool of asymmetric non-fullerene acceptors, we introduced rhodamine as a terminal group into Y-series small molecule acceptors (SMAs) and synthesized three asymmetric SMAs (BTP-Rh2F, BTP-Rh2Cl, and BTP-Rh2Br) with different halogen substitutions. As a result, shallow lowest unoccupied molecular orbital energy levels of these SMAs contribute to high open-circuit voltage (<em>V</em><sub>OC</sub>) values exceeding 0.95 V in corresponding devices. However, insufficient exciton dissociation and inefficient charge carrier mobility limit the power conversion efficiencies (PCEs). Notably, the introduction of BTP-Rh2Cl as a third component into the PM6:BTP-eC9 binary host system effectively reduces non-radiative recombination, ultimately yielding an enhanced PCE of 18.03 % along with improved <em>V</em><sub>OC</sub> of 0.863 V. This work highlights the potential of rhodamine-modified SMAs in enhanced <em>V</em><sub>OC</sub> and high-efficiency ternary solar cells.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"145 ","pages":"Article 107311"},"PeriodicalIF":2.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144773058","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 TADF OLEDs for photodynamic detection of ovarian and skin tumors 用于卵巢和皮肤肿瘤光动力学检测的高效TADF oled
IF 2.7 4区 工程技术
Organic Electronics Pub Date : 2025-10-01 Epub Date: 2025-07-17 DOI: 10.1016/j.orgel.2025.107303
Rajesh Kumar Tiwari , Sanjay Kumar Sharma , Rajesh Mishra , Mangey Ram Nagar
{"title":"Highly-efficient TADF OLEDs for photodynamic detection of ovarian and skin tumors","authors":"Rajesh Kumar Tiwari ,&nbsp;Sanjay Kumar Sharma ,&nbsp;Rajesh Mishra ,&nbsp;Mangey Ram Nagar","doi":"10.1016/j.orgel.2025.107303","DOIUrl":"10.1016/j.orgel.2025.107303","url":null,"abstract":"<div><div>The early detection of ovarian and skin tumors remains a significant challenge due to the limitations of current imaging techniques in sensitivity, specificity, and accessibility. Photodynamic detection (PDD), employing photosensitizers activated by light to identify malignant tissues, offers a promising non-invasive solution. In this study, we present a novel approach that integrates highly-efficient organic light-emitting diodes (OLEDs) as compact, tunable light sources for photodynamic tumor detection. Unlike conventional systems that rely on inorganic LEDs, OLEDs offer advantages such as mechanical flexibility, wavelength specificity, low operating voltage, and facile integration into wearable or endoscopic devices. Simulation results indicated that the device with emitter doped in host materials shows 28 % higher recombination rate and 31 % higher current density as compared with neat emitter-based OLED. Following these simulations, the solution-processed devices were fabricated using the optimized architecture. The fabricated TADF OLEDs were characterized for their optical and electrical properties, revealing a high external quantum efficiency of 9.0 %, brightness of 6192 cd/m<sup>2</sup>, and power efficiency of 26.7 lm/W, which depicts accurate and precise biomarkers for the detection of non-invasive cancers. This study further demonstrated the potential role of these TADF OLEDs in cancer detection, specifically for identifying ovarian and skin cancer biomarkers, was revealed. A healthy person can be distinguished from an ovarian cancer patient based on the shifter fluorescence produced by their urine and from a skin cancer patient based on the fluorescence transmitted through the skin. These results demonstrate that doped carbazole-based TADF OLED displays higher performance, making them a promising candidate for biomedical applications.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"145 ","pages":"Article 107303"},"PeriodicalIF":2.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703520","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
Alkylthio side-chain engineering on the quinoxaline-based electron acceptors for efficient organic solar cells 高效有机太阳能电池中喹诺啉基电子受体的烷基硫代侧链工程
IF 2.6 4区 工程技术
Organic Electronics Pub Date : 2025-10-01 Epub Date: 2025-07-29 DOI: 10.1016/j.orgel.2025.107310
Kui Li , Yue Liu , Hang Yang , Ya Yuan , Jun Feng , Jiahao Qian , Xuncheng Zhu , Yue Wu , Chaohua Cui , Yongfang Li
{"title":"Alkylthio side-chain engineering on the quinoxaline-based electron acceptors for efficient organic solar cells","authors":"Kui Li ,&nbsp;Yue Liu ,&nbsp;Hang Yang ,&nbsp;Ya Yuan ,&nbsp;Jun Feng ,&nbsp;Jiahao Qian ,&nbsp;Xuncheng Zhu ,&nbsp;Yue Wu ,&nbsp;Chaohua Cui ,&nbsp;Yongfang Li","doi":"10.1016/j.orgel.2025.107310","DOIUrl":"10.1016/j.orgel.2025.107310","url":null,"abstract":"<div><div>Alkylthio side-chain engineering plays an important role in constructing high-performance small-molecule acceptors (SMAs) for organic solar cells (OSCs). In this work, two ethylthio-substituted quinoxaline core-based SMAs (BQS-F and BQDS-F) are developed to elucidate the impact of alkylthio substituents on their physicochemical and photoelectric properties. Comparative analysis reveals that the dialkylthio-substituted BQDS-F exhibited a more planar molecular backbone, red-shifted absorption spectrum, upshifted molecular orbital energy levels, and enhanced crystallinity compared to the monoalkylthio-substituted BQS-F. However, the poor thermodynamic compatibility of BQDS-F with the polymer donor D18 leads to excessively phase-separated heterojunction textures. By contrast, more homogeneous and uniform phase separation is realized in D18:BQS-F blend film, resulting in enhanced exciton dissociation efficiency, improved charge carrier mobility, and suppressed charge recombination. As a result, the BQS-F-based device affords a much higher efficiency of 15.52 % compared to the BQDS-F-based device (12.21 %). The results clarify the effect of ethylthio substituents on quinoxaline core-based SMAs, which are instructive to further advance the development of organic photovoltaics.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"145 ","pages":"Article 107310"},"PeriodicalIF":2.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144773056","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
One-step Co-fabrication of tripod self-organized hole transport and perovskite layers for perovskite solar cells 钙钛矿太阳能电池三脚架自组织空穴输运与钙钛矿层的一步共制
IF 2.7 4区 工程技术
Organic Electronics Pub Date : 2025-10-01 Epub Date: 2025-07-09 DOI: 10.1016/j.orgel.2025.107296
Daiki Tomita, Ryo Ishikawa
{"title":"One-step Co-fabrication of tripod self-organized hole transport and perovskite layers for perovskite solar cells","authors":"Daiki Tomita,&nbsp;Ryo Ishikawa","doi":"10.1016/j.orgel.2025.107296","DOIUrl":"10.1016/j.orgel.2025.107296","url":null,"abstract":"<div><div>The use of self-assembled materials (SAM) in the hole transport layer (HTL) of inverted (p-i-n) perovskite solar cells (PSCs) has been a subject of growing interest. This is mainly due to their ability to achieve high HTL coverage with minimal film thickness, even on rough substrates, and to reduce the perovskite interface energy barrier. However, a common issue is a reduction in perovskite layer coverage on SAM. A novel one-step simultaneous co-formation of the p-i layer has been proposed to address this, involving the addition of SAM to the perovskite precursor solution.</div><div>This investigation explores the morphology and the physical properties of perovskite thin films produced using the one-step formation of the p-i layer without antisolvent, with the recently developed multipodal molecule[[5H-diindolo[3,2-a:3′,2′-c]carbazole-5,10,15-triyl]tris(propane-3,1-diyl)] trisphosphonic acid(3PATAT-C3), which exhibits a face-on molecular orientation. Results demonstrated that introducing 3PATAT-C3 into the perovskite precursor solution yielded improvements in passivation and promoted charge extraction.</div><div>The PSCs utilizing the one-step p-i co-deposition exhibited a remarkable power conversion efficiency (PCE) of 21.4 % and a fill factor of 78.7 %. These results outperformed the reference devices fabricated by depositing perovskite on SAM. Furthermore, statistical analyses indicate that hysteresis in current density–voltage curves has been reduced. These outcomes suggest that the one-step p-i co-deposition technique matches and potentially surpasses the performance of traditionally manufactured cells. Moreover, it achieves this with fewer fabrication steps, thereby representing a substantial advancement toward its commercial viability, instilling hope for the future of solar cell technology.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"145 ","pages":"Article 107296"},"PeriodicalIF":2.7,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144632985","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
Design, synthesis, and photovoltaic performance of regioisomeric D18 – Impact of cross-conjugation on electronic structure and solar cell efficiency 区域异构体D18的设计、合成及光伏性能——交叉共轭对电子结构和太阳能电池效率的影响
IF 2.6 4区 工程技术
Organic Electronics Pub Date : 2025-10-01 Epub Date: 2025-07-26 DOI: 10.1016/j.orgel.2025.107309
Kaat Valkeneers , Laura Leten , Sam Gielen , Tom Cardeynaels , Sigurd Mertens , Jochen Vanderspikken , Ruth Theresia Arwani , Adam Marks , Alberto Salleo , Rachith Shanivarasanthe Nithyananda Kumar , Laurence Lutsen , Koen Vandewal , Wouter Maes
{"title":"Design, synthesis, and photovoltaic performance of regioisomeric D18 – Impact of cross-conjugation on electronic structure and solar cell efficiency","authors":"Kaat Valkeneers ,&nbsp;Laura Leten ,&nbsp;Sam Gielen ,&nbsp;Tom Cardeynaels ,&nbsp;Sigurd Mertens ,&nbsp;Jochen Vanderspikken ,&nbsp;Ruth Theresia Arwani ,&nbsp;Adam Marks ,&nbsp;Alberto Salleo ,&nbsp;Rachith Shanivarasanthe Nithyananda Kumar ,&nbsp;Laurence Lutsen ,&nbsp;Koen Vandewal ,&nbsp;Wouter Maes","doi":"10.1016/j.orgel.2025.107309","DOIUrl":"10.1016/j.orgel.2025.107309","url":null,"abstract":"<div><div>The unrivaled structural tunability of organic semiconductors allows to tailor their chemical and physical properties for distinct optoelectronic applications. This is particularly true for push-pull conjugated polymers, in which the (hetero)aromatic monomers, substituents, and side chains can be readily adapted. On the other hand, the impact of isomerization within the polymer backbone remains poorly explored. Here, a novel structural isomer of the state-of-the-art push-pull copolymer D18 is synthesized. This ‘isoD18’ regioisomer shows significantly different optical and electrochemical properties. Its deeper highest occupied molecular orbital energy level and reduced non-radiative voltage losses afford a higher open-circuit voltage (from 0.86 to 0.92 V) for the resulting polymer solar cells. Unfortunately, this is accompanied by a decrease in the short-circuit current density and fill factor, which can mainly be attributed to the one-order-lower hole mobility of isoD18, in line with its reduced thin-film organization. Although the performance of the devices based on the isomeric derivative turns out to be lower in this case, this study does enhance our insights into the effects of regioisomerism in polymer semiconductors on the resulting optoelectronic material and device features.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"145 ","pages":"Article 107309"},"PeriodicalIF":2.6,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750227","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
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