Organic Electronics最新文献_第9页

Digital organic memristor based on P3HT doped with organic small molecules TmPyPB/ TpPyPB 基于P3HT掺杂有机小分子TmPyPB/ TpPyPB的数字有机忆阻器

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-09-01 Epub Date: 2025-05-26 DOI: 10.1016/j.orgel.2025.107281

Xuechen Wang , Wei Li , Jinjin Zhao , Fuquan Wang , Lei Fan , Zixun Chen , Ping Wang , Yujia Zhai , Zhixiang Gao , Wenshan Qu , Hua Wang , Bin Wei

{"title":"Digital organic memristor based on P3HT doped with organic small molecules TmPyPB/ TpPyPB","authors":"Xuechen Wang , Wei Li , Jinjin Zhao , Fuquan Wang , Lei Fan , Zixun Chen , Ping Wang , Yujia Zhai , Zhixiang Gao , Wenshan Qu , Hua Wang , Bin Wei","doi":"10.1016/j.orgel.2025.107281","DOIUrl":"10.1016/j.orgel.2025.107281","url":null,"abstract":"<div><div>Digital organic memristors have potential in the field of data storage technology due to their advantages of superintegration, simple preparation process, flexibility and low power consumption. However, it's difficult to achieve low operating voltages while maintaining strong endurance. We fabricated digital organic memristors based on poly(3-hexylthiophene) (P3HT) doped with 1,3,5-tri(m-pyridin-3-yl-phenyl) benzene (TmPyPB) or 1,3,5-tris(p-pyridin-3-yl-phenyl) benzene (TpPyPB), which achieve both strong endurance and low operating voltages. The device exhibits a current on/off ratio (<em>I</em><sub><em>on/off</em></sub>) of 10<sup>4</sup>, long retention time of 10<sup>4</sup> s, strong endurance of 250 cycles, and response time of 500 ms. Their set voltage (<em>V</em><sub><em>set</em></sub>) and reset voltage (<em>V</em><sub><em>reset</em></sub>) were frozen in 1.85 V and −2.69 V, respectively. The resistive switching mechanism was the trapping and detrapping process of charge trap induced by TmPyPB or TpPyPB. In addition, we constructed a 10 × 10 memristor array, realized alphabetic information storage and basic logic operations, demonstrate the device has good reliability, current stability, and uniform performance. This study provides an effective solution for realizing digital organic memristors with high durability and low operating voltage.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"144 ","pages":"Article 107281"},"PeriodicalIF":2.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144169571","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

Multifunctional organic synaptic transistors for tissue-equivalent dosimetry 用于组织等效剂量测定的多功能有机突触晶体管

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-09-01 Epub Date: 2025-07-03 DOI: 10.1016/j.orgel.2025.107293

Somnath Bhattacharjee , Naresh Jingar , Shree Prakash Tiwari

{"title":"Multifunctional organic synaptic transistors for tissue-equivalent dosimetry","authors":"Somnath Bhattacharjee , Naresh Jingar , Shree Prakash Tiwari","doi":"10.1016/j.orgel.2025.107293","DOIUrl":"10.1016/j.orgel.2025.107293","url":null,"abstract":"<div><div>Pervading the modern electronics landscape, organic synaptic transistors (OSTs) have emerged as a forefront device candidate for advancement in artificial intelligence (AI) systems. This paper reports OSTs as highly sensitive dosimeters which also emulate human tissue properties and cognitive functions. Fabricated OSTs exhibit excellent p-channel transistor characteristics with field-effect mobility of 0.21 (±0.03) cm<sup>2</sup>V<sup>−1</sup>s<sup>−1</sup> and on-off current ratio on the order of 10<sup>3</sup> for −10 V operation. The OSTs demonstrate short-term plasticity (STP) through behaviors such as pulse paired facilitation (PPF) and spike number dependent plasticity (SNDP). Notably, the relaxation time constants derived from PPF behavior, combined with an energy consumption per stimuli of ∼10 pJ, closely mimic those observed in human synapses. Moreover, by integrating the synaptic weights derived from the fabricated devices, artificial neural network (ANN) achieves a handwritten digit recognition accuracy exceeding 99.4 %. These OSTs exhibit negligible changes in on current and mobility after being irradiated, but a linearly varying shift in threshold voltage, suitable for detecting γ-radiation exposure. An impressive sensitivity (∼5 mV/rad) to γ-radiation exposure under radiation amount similar to the values used for treatment of tumors. Our results indicate that these flexible OSTs have the potential to be utilized as smart and intelligent radiation sensors for applications such as medical imaging, radiation therapy, and portable dosimeters for emergency responders and armed forces.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"144 ","pages":"Article 107293"},"PeriodicalIF":2.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144571160","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

Boosting the performance of triple-cation perovskite solar cells through 2-phenylethanethiol treatment and green anti-solvent 通过2-苯乙基硫醇处理和绿色抗溶剂提高三阳离子钙钛矿太阳能电池的性能

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-08-01 Epub Date: 2025-04-15 DOI: 10.1016/j.orgel.2025.107254

Ali L. Abed , Mustafa K.A. Mohammed , Sadeer M. Majeed , Raid A. Ismail , Duha S. Ahmed , Mika Sillanpää

{"title":"Boosting the performance of triple-cation perovskite solar cells through 2-phenylethanethiol treatment and green anti-solvent","authors":"Ali L. Abed , Mustafa K.A. Mohammed , Sadeer M. Majeed , Raid A. Ismail , Duha S. Ahmed , Mika Sillanpää","doi":"10.1016/j.orgel.2025.107254","DOIUrl":"10.1016/j.orgel.2025.107254","url":null,"abstract":"<div><div>Increasing the efficiency and improving the stability of perovskite solar cells (PSCs) represent major challenges for researchers and offer breakthroughs in renewable energy, driving significant progress toward sustainable energy solutions. The current study aims to increase power conversion efficiency (PCE) along with the stability of triple-cation PSCs. Herein, we employed green ethyl acetate (ETAC) anti-solvent to reduce the toxicity of the PSC production approach. Photovoltaic measurements showed a low PCE of 14.19 % for cells when we used the ETAC antisolvent. This was due to the development of a perovskite film with low crystallinity and small grains. We added 2-phenylethanethiol (2-PET) material to the ETAC anti-solvent to increase the PCE of ETAC-based PSCs. The findings showed that the 2-PET additive lowers defects in both the bulk and the surface of the perovskite layer. This improves charge transfer and inhibits charge recombination in ETAC-based PSCs. The 2-PET molecules interact with under-coordinated Pb<sup>2+</sup> ions and improve the photovoltaic properties of the perovskite layer. The modified ETAC-based PSCs recorded a champion efficiency of 18.46 % with improved operational and ambient air stability. After 45 days of performing an operational stability test, the modified ETAC-based PSCs demonstrated less than 5 % efficiency loss without any encapsulation and at a humidity level of 20 %.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"143 ","pages":"Article 107254"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835137","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

Stretchable, flexible, transparent PEDOT:PSS electrodes by doping strategy 可拉伸，柔性，透明PEDOT:PSS电极掺杂策略

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-08-01 Epub Date: 2025-04-24 DOI: 10.1016/j.orgel.2025.107260

Xianchun Chen, Junjie Liu, Haoran Zhu, Longzhen Qiu, Xiaohong Wang

{"title":"Stretchable, flexible, transparent PEDOT:PSS electrodes by doping strategy","authors":"Xianchun Chen, Junjie Liu, Haoran Zhu, Longzhen Qiu, Xiaohong Wang","doi":"10.1016/j.orgel.2025.107260","DOIUrl":"10.1016/j.orgel.2025.107260","url":null,"abstract":"<div><div>Flexible transparent electrodes (FTEs) have been widely used in the field of flexible optoelectronic devices due to their simultaneous conductivity and optical transmittance. However, traditional fabrication methods often struggle to achieve an optimal balance between high conductivity and flexibility, and may also involve high costs and complex processes. Consequently, developing a cost-effective strategy for the large-scale production of high-performance FTEs is crucial. Here, high-performance poly(3,4-ethylenedioxythiophene):poly(styrenesulfonic acid) (PEDOT:PSS) spray-coated FTEs were prepared by optimizing the PEDOT:PSS conductive ink formulation through doping strategies. The PEDOT:PSS FTEs exhibit a surface resistance of 70 Ω/sq and a transmittance of 80 % at 550 nm. Notably, their optoelectronic properties remain stable after 100 bends, continuous illumination at 2.43 mW/cm<sup>2</sup>, and exposure to 90 % relative humidity. In addition, large-scale FTEs (15 × 15 cm) were successfully produced using the spray-coating method and effectively implemented in flexible touch screens. These results show that optimized conductive ink formulations have great potential for the preparation of low-cost, large-area and uniform FTEs.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"143 ","pages":"Article 107260"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143878542","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

A study of the synaptic memory behavior of a flour-based flexible memristor 基于面粉的柔性记忆器的突触记忆行为研究

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-08-01 Epub Date: 2025-04-15 DOI: 10.1016/j.orgel.2025.107255

Kekang Ma, Gan Li, Hao Wu, Xiaolei Chang, Mengran Wu, Ling Wei

{"title":"A study of the synaptic memory behavior of a flour-based flexible memristor","authors":"Kekang Ma, Gan Li, Hao Wu, Xiaolei Chang, Mengran Wu, Ling Wei","doi":"10.1016/j.orgel.2025.107255","DOIUrl":"10.1016/j.orgel.2025.107255","url":null,"abstract":"<div><div>Biomaterial-based memristors have emerged as a prominent area of research and a hotspot for research on wearable sensors and neuromorphic computing owing to their favorable characteristics of biocompatibility and cost-effectiveness. However, much work is yet to be done to develop biomimetic memristors that are simultaneously flexible and device-stabilized. The study presents a simple approach to preparing flexible memristors using wheat flour (WF) as a functional layer and investigates device stability and synaptic plasticity. The devices can operate stably under continuous voltage scanning for more than 80 weeks, and well emulate biological synaptic functions and synaptic plasticity, such as short-term memory shift to long-term memory and habituation and dehabituation processes. Finally, the mechanisms of the devices' resistive switching and memory transition behaviors were investigated. This work highlights the application of biomaterials in wearable devices and neuromorphic computing, and exemplifies the promise of biomaterials, such as wheat flour, in next-generation environmentally stable and sustainable electronic devices.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"143 ","pages":"Article 107255"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143835138","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

An ion-modulated organic electrochemical synaptic transistor for efficient parallel computing and in-situ training 用于高效并行计算和原位训练的离子调制有机电化学突触晶体管

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-08-01 Epub Date: 2025-04-15 DOI: 10.1016/j.orgel.2025.107253

Xiang Wan , Jie Yan , Shengnan Cui , Yong Xu , Huabin Sun

{"title":"An ion-modulated organic electrochemical synaptic transistor for efficient parallel computing and in-situ training","authors":"Xiang Wan , Jie Yan , Shengnan Cui , Yong Xu , Huabin Sun","doi":"10.1016/j.orgel.2025.107253","DOIUrl":"10.1016/j.orgel.2025.107253","url":null,"abstract":"<div><div>Parallel computing architectures are urgently needed to speed up the training process of artificial neural networks. This study proposes a novel approach to parallel computing using ion-modulated organic electrochemical transistors (OECTs). Thanks to electrochemical doping and de-doping mechanism, the OECTs demonstrate long-term plasticity and exhibit distinguishable conductive states with high linearity. Moreover, our device array enables efficient weighted sum and convolution operations for image feature extraction and performs effectively in simulating hardware-based Faster R-CNN for object detection via transfer learning. The OECTs array, with its separate read and write features and controllable conductive states, achieves the integration of forward inference and backward training, resulting in successful in-situ training of convolutional neural networks (CNNs). The CNNs based on OECTs achieve accuracies of 96.49 % and 82.57 % on the MNIST and Fashion-MNIST datasets, respectively, showcasing the potential of OECTs in edge computing for enhanced resource utilization and time efficiency.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"143 ","pages":"Article 107253"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143860436","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

Seed crystal layer-assisted growth of CsPbBr3 perovskite film via electro-spray deposition for sensitive direct X-ray detection 电喷雾沉积法制备CsPbBr3钙钛矿薄膜，用于灵敏的直接x射线检测

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-08-01 Epub Date: 2025-04-24 DOI: 10.1016/j.orgel.2025.107261

Haomiao Li , Bo Jiao , Mengxin Yan , Zhihang Zhang , Zubair Maroof , Hanxiao Peng , Dongdong Wang , Guijiang Zhou , Zhaoxin Wu , Xun Hou

{"title":"Seed crystal layer-assisted growth of CsPbBr3 perovskite film via electro-spray deposition for sensitive direct X-ray detection","authors":"Haomiao Li , Bo Jiao , Mengxin Yan , Zhihang Zhang , Zubair Maroof , Hanxiao Peng , Dongdong Wang , Guijiang Zhou , Zhaoxin Wu , Xun Hou","doi":"10.1016/j.orgel.2025.107261","DOIUrl":"10.1016/j.orgel.2025.107261","url":null,"abstract":"<div><div>Highly sensitive X-ray detectors play a critical role in various sectors, including medicine, crystallography, and national security. Semiconductor-based direct X-ray detectors have the potential to become the next generation of detectors due to their superior advantages compared to existing detectors. Notably, perovskite materials, renowned for their exceptional performance in the photovoltaic field, could be utilized in the development of novel X-ray detectors with high sensitivity and low detection limits. However, challenges remain in thick film deposition techniques such as inadequate film uniformity, elevated processing temperatures, and limited scalability. In this study, we present an improved E-spray process incorporating a seed crystal layer for achieving high-quality CsPbBr<sub>3</sub> thick film deposition. The incorporation of a seed crystal layer effectively mitigates the coffee-ring effect by depinning the triple-phase contact line of precursor solution droplets, while also promoting oriented growth of the thick CsPbBr<sub>3</sub> film. Furthermore, we demonstrate a direct X-ray detector with remarkable sensitivity (13561.56 μC Gyair<sup>−1</sup> cm<sup>−2</sup> at 5 V) and an impressively low detection limit (0.052 μGys<sup>−1</sup>). We anticipate that these results will stimulate interest in this field and facilitate advancements in perovskite-based detector technology.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"143 ","pages":"Article 107261"},"PeriodicalIF":2.7,"publicationDate":"2025-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143876968","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

Low-voltage RGB perovskite light-emitting transistors with magnetron sputtered Ta2O5 high-k dielectric layer 具有磁控溅射Ta2O5高k介电层的低压RGB钙钛矿发光晶体管

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-07-01 Epub Date: 2025-03-24 DOI: 10.1016/j.orgel.2025.107241

Xingyu Zhang, Min Guo, Jia Li, Tingting Dai, Zihong Yang, Zhidong Lou, Yanbing Hou, Feng Teng, Yufeng Hu

{"title":"Low-voltage RGB perovskite light-emitting transistors with magnetron sputtered Ta2O5 high-k dielectric layer","authors":"Xingyu Zhang, Min Guo, Jia Li, Tingting Dai, Zihong Yang, Zhidong Lou, Yanbing Hou, Feng Teng, Yufeng Hu","doi":"10.1016/j.orgel.2025.107241","DOIUrl":"10.1016/j.orgel.2025.107241","url":null,"abstract":"<div><div>Perovskite light-emitting transistors (PeLETs) represent an emerging class of optoelectronic devices that integrate the exceptional light-emission capabilities of perovskite light-emitting diodes (PeLEDs) with the efficient charge transport properties of field-effect transistors (FETs). This integration facilitates simplified fabrication, enhanced current densities, and stable charge mobility, making PeLETs highly promising for advanced display applications. Low-voltage operation and full-color emission are the primary challenges in achieving high-performance PeLETs. In this work, a PeLET structure that operates at 5 V is designed using a magnetron-sputtered Ta<sub>2</sub>O<sub>5</sub> high-k dielectric layer. The influence of the hole transport layer's energy level structure and mobility on the performance of the light-emitting transistor is investigated. By tuning the perovskite bandgap, the PeLETs with emission in the red, green, and blue spectral regions have been achieved. The optimized red-, green-, and blue-emitting PeLETs exhibit charge carrier mobilities of 0.41 cm<sup>2</sup>V<sup>−1</sup>s<sup>−1</sup>, 1.00 cm<sup>2</sup>V<sup>−1</sup>s<sup>−1</sup>, and 0.51 cm<sup>2</sup>V<sup>−1</sup>s<sup>−1</sup>, with corresponding threshold voltages of 0.27 V, 0.64 V, and 0.46 V, respectively. This work advances the development of PeLETs by demonstrating a multilayer device architecture that enhances charge carrier dynamics and expands emission tunability. These findings provide a promising path toward low-voltage PeLETs for next-generation display technologies.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"142 ","pages":"Article 107241"},"PeriodicalIF":2.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143724226","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

Selection of compatible blended cohost towards boosting performance of TADF-polymer light-emitting electrochemical cells 选择相容混合共宿主提高tadf -聚合物发光电化学电池的性能

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-07-01 Epub Date: 2025-04-10 DOI: 10.1016/j.orgel.2025.107252

Mei Chen , Jinchang Ye , Jiantian Lu , Sihua Wu , Guanrong Lin , Yingming Ma , Lihui Liu , Yuwei Zhang , Li Niu , Baohua Zhang

{"title":"Selection of compatible blended cohost towards boosting performance of TADF-polymer light-emitting electrochemical cells","authors":"Mei Chen , Jinchang Ye , Jiantian Lu , Sihua Wu , Guanrong Lin , Yingming Ma , Lihui Liu , Yuwei Zhang , Li Niu , Baohua Zhang","doi":"10.1016/j.orgel.2025.107252","DOIUrl":"10.1016/j.orgel.2025.107252","url":null,"abstract":"<div><div>Light-emitting electrochemical cells (LECs) using thermally activated delayed fluorescent (TADF) polymer emitter are attractive since they own the great potential in fabricating robust LECs with low-cost and high efficiencies towards various applications. However, current scarce study disclosed that it is hard to simultaneous optimize electrochemical doping and multi-component miscibility of the emissive layer, which renders luminance and external quantum efficiency (EQE) of TADF-polymer LECs still quite low, e.g. less than 500 cd m<sup>−2</sup> and 1.0 %. Here, we propose to select compatible p-type and n-type small molecules as cohost of TADF-polymer emitter, which is critical to simultaneously achieve balanced, efficient p-/n-type electrochemical doping and charge transport, efficient energy transfer from cohost to TADF-polymer emitter and most importantly well restrained intra- and inter-molecular interactions, i.e. self-aggregation of host and redshift effect of host on TADF-polymer emitter. TADF-polymer LEC using such a qualified compatible cohost achieved a peak luminance of 1292 cd m<sup>−2</sup>, a peak EQE of 2.24 %, and a peak luminous efficiency of 6.89 cd A<sup>−1</sup> at 6.5 V, which is distinctly superior to that of control devices and earlier report of TADF-polymer LECs. It proves the effectiveness of such strategy and provides a research thought on further developments.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"142 ","pages":"Article 107252"},"PeriodicalIF":2.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143815614","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

Revealing the memory effect in phototransistors with vertical phase separation of conjugated/insulating polymer blends through film-on-water interface self-assembly 通过水膜界面自组装揭示共轭/绝缘聚合物共混物垂直相分离在光电晶体管中的记忆效应

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-07-01 Epub Date: 2025-03-26 DOI: 10.1016/j.orgel.2025.107230

Yan-Ting Chen , You-Wei Cao , Yu-Chih Hsu , Yan-Cheng Lin , Yang-Yen Yu

{"title":"Revealing the memory effect in phototransistors with vertical phase separation of conjugated/insulating polymer blends through film-on-water interface self-assembly","authors":"Yan-Ting Chen , You-Wei Cao , Yu-Chih Hsu , Yan-Cheng Lin , Yang-Yen Yu","doi":"10.1016/j.orgel.2025.107230","DOIUrl":"10.1016/j.orgel.2025.107230","url":null,"abstract":"<div><div>This study utilizes a blend of poly (3-hexylthiophene) (P3HT) and poly (1-pyrenemethyl methacrylate) (PPyMA) polymers to achieve vertical phase separation through air/liquid interface self-assembly. Due to the surface energy mismatch of these blends, a bilayer structure is formed between the conjugated and insulating polymers. The blended thin films are applied to phototransistor memory devices, with PPyMA as a photoactive electret and P3HT as a semiconductor channel. A comparative study of the two-transfer direction water side (forward structure) and air side (reverse structure) reveals that the vertical phase separation morphology of the aromatic side groups in PPyMA, along with its conjugation, is closely related to the photoresponse, memory retention, and durability of the photomemory devices. Electrical analysis shows that the device fabricated with the forward transfer (P3HT/PPyMA) can achieve photo writing through exposure to ultraviolet light at 265 nm, 310 nm, 365 nm, and blue light at 455 nm, while electrical erasure is performed via gate bias, resulting in a wide memory window (∼48.7 V). The device also exhibits a stable memory ratio in repeated write/erase measurements and long-term stability exceeding 10<sup>4</sup> s. In contrast, the device fabricated with the reverse transfer (PPyMA/P3HT), due to the reverse bilayer structure, required hole injection to pass through the insulating PPyMA layer, and holes may recombine with stored electrons during vertical transport, thereby dismissing the memory mechanism. As a result, the device cannot effectively store charges to achieve memory retention. This study demonstrates vertical phase separation through air/liquid interface self-assembly and reveals the photoresponse and charge storage mechanisms of photomemory devices.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"142 ","pages":"Article 107230"},"PeriodicalIF":2.7,"publicationDate":"2025-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143768617","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