Organic Electronics最新文献_第5页

Fabrication of organic thin films using slit nozzle with a wide viscosity spectrum 利用狭缝喷嘴制造具有宽粘度谱的有机薄膜

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2024-08-08 DOI: 10.1016/j.orgel.2024.107115

Gieun Kim, Jongwoon Park

{"title":"Fabrication of organic thin films using slit nozzle with a wide viscosity spectrum","authors":"Gieun Kim, Jongwoon Park","doi":"10.1016/j.orgel.2024.107115","DOIUrl":"10.1016/j.orgel.2024.107115","url":null,"abstract":"<div>A slit nozzle with a broad viscosity spectrum is highly demanded for slit coating of various materials with different viscosities without a compromise on the film quality. To this end, we have fabricated a multi-cavity slit nozzle with the inlet and vent holes for each cavity. Compared with a slit nozzle with a high-volume single cavity, such a multi-cavity slit nozzle further reduces the dead volume and thus material waste. As a design parameter in computational fluid dynamics (CFD) simulations for the multi-cavity slit nozzles, we have calculated the coefficient of variation in the internal pressure (Pcv) of the cavity and investigated the correlation between the simulated Pcv value and the measured thickness uniformity of low-viscosity (tens of cPs) poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS), medium-viscosity (5000 cPs) polydimethylsiloxane (PDMS), and high-viscosity (18,000 cPs) hard-PDMS films. It is addressed that the Pcv value that can ensure the thickness non-uniformity of less than 5 % is of the order of 1 %, and the internal pressure of the nozzle should not exceed a specific upper limit to protect a coating system against overload. Based on the design guideline provided, we have found that the upper limit of the viscosity spectrum of the triple-cavity slit nozzle with the 800-μm-thick shim is 79,000 cPs when the flow rate is 50 ml/min. Using the multi-cavity slit nozzle, we have fabricated a highly uniform PDMS film exhibiting the tensile strain as high as 180 %, which can be used as a substrate for stretchable displays. Furthermore, we have successfully fabricated flexible OLED stripes on the slit-coated conductive PEDOT:PSS stripes, showing the average luminance of 72.8 cd/m2 at 5 V and inter-stripe luminance non-uniformity as low as 8.2 %.</div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"133 ","pages":"Article 107115"},"PeriodicalIF":2.7,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963267","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 thermoelectric performance of PEDOT: PSS/Bi2Te3 hybrid films via structural and interfacial engineering 通过界面工程提升 PEDOT.PSS/Bi2Te3 混合薄膜的热电性能通过结构和界面工程提升 PEDOT: PSS/Bi2Te3 混合薄膜的热电性能

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2024-08-06 DOI: 10.1016/j.orgel.2024.107103

Vaishali Rathi , Kamal Singh , K.P.S. Parmar , Ranjeet K. Brajpuriya , Ashish Kumar

{"title":"Boosting thermoelectric performance of PEDOT: PSS/Bi2Te3 hybrid films via structural and interfacial engineering","authors":"Vaishali Rathi , Kamal Singh , K.P.S. Parmar , Ranjeet K. Brajpuriya , Ashish Kumar","doi":"10.1016/j.orgel.2024.107103","DOIUrl":"10.1016/j.orgel.2024.107103","url":null,"abstract":"<div>In this work, we synthesized poly(3,4-ethylenedioxythiophene): poly (styrene sulfonate) (PEDOT: PSS) and PEDOT: PSS/Bi2Te3 hybrid composite film using a spin coating method. The maximum Seebeck coefficient (22 μVK−1) and power factor (57.18 μWm-1 K−2 around 300 K) were achieved at 0.4 wt% Bi2Te3. The electrical conductivity (σ) reached a maximum of 1467 Scm−1 at 300 K for 0.6 wt% Bi2Te3, which is more than three times higher than that of pure PEDOT: PSS. Two critical components contribute to the improved electrical transport performance, as identified by XRD, Raman spectroscopy, XPS, AFM, and SEM. First, the conductive polymer undergoes a structural transformation from a benzenoid to a quinoid configuration, enhancing conductivity. This transformation is due to the interaction between the π bonds of PEDOT: PSS and the Van der Waals forces between the tellurium (Te) atom layers of Bi2Te3. Second, the interfacial barrier between PEDOT: PSS and Bi2Te3 creates an energy-filtering effect that increases the Seebeck coefficient.</div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"133 ","pages":"Article 107103"},"PeriodicalIF":2.7,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141963266","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 universal hole transport layer for efficient organic solar cells processed by blade coating 用于通过叶片涂层加工的高效有机太阳能电池的通用空穴传输层

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2024-08-05 DOI: 10.1016/j.orgel.2024.107104

Zijian Li, Hui Huang, Xianghui Zeng, Baoshen Deng, Chengsheng Li, Chuanlin Gao, Guangye Zhang, Shunpu Li, Chen Xie

{"title":"A universal hole transport layer for efficient organic solar cells processed by blade coating","authors":"Zijian Li, Hui Huang, Xianghui Zeng, Baoshen Deng, Chengsheng Li, Chuanlin Gao, Guangye Zhang, Shunpu Li, Chen Xie","doi":"10.1016/j.orgel.2024.107104","DOIUrl":"10.1016/j.orgel.2024.107104","url":null,"abstract":"<div>Doctor-blade coating technology is a roll-to-roll compatible high-throughput thin film fabrication route. In this work, doctor-blading was applied for fabricating organic solar cells (OSCs) using a polyoxometalates material phosphomolybdic acid (PMA) as a hole transport layer (HTL). Compared to PEDOT:PSS, PMA-based devices demonstrate lower trap-assisted recombination, higher hole mobility, prolonged charge carrier lifetime and faster charge collection. With PM6:Y6 as active layer, PMA-based device delivered a high power conversion efficiency (PCE) of 17.79 % with a boosted short-circuit current density (JSC) value of 28.08 mA/cm2, which is one of the best performances for PM6:Y6-based solar cells through doctor-blading process. In addition, the performance improvement was observed in both conventional and inverted structured devices with various donor: acceptor combinations. These results indicate the high universality of PMA for printable processing and its prospect in preparation of the industrial production of OSCs.</div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"133 ","pages":"Article 107104"},"PeriodicalIF":2.7,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141934028","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

Surface passivation enables efficient and stable inverted perovskite solar cells by 6-(Trifluoromethyl)pyridine-3-amidinehydrochloride 6-(三氟甲基)吡啶-3-脒盐酸盐通过表面钝化实现高效稳定的倒置包晶太阳能电池

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2024-08-02 DOI: 10.1016/j.orgel.2024.107102

Xinyu Guo, Chenhui Zhang, Xinghai Huang, Fulin Sun, Fangtian You, Zhiqun He, Chunjun Liang

引用次数: 0

Temperature-assisted crystallization and morphology for CH3NH3PbI3 perovskite solar cells using laser-induced heat treatment 利用激光诱导热处理实现 CH3NH3PbI3 包晶体太阳能电池的温度辅助结晶和形貌

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2024-07-25 DOI: 10.1016/j.orgel.2024.107099

Xuan-Long Trinh , Van-Minh Nguyen , Hanh-C. Nguyen , Thanh-Long Phan , Hyun-Chul Kim

{"title":"Temperature-assisted crystallization and morphology for CH3NH3PbI3 perovskite solar cells using laser-induced heat treatment","authors":"Xuan-Long Trinh , Van-Minh Nguyen , Hanh-C. Nguyen , Thanh-Long Phan , Hyun-Chul Kim","doi":"10.1016/j.orgel.2024.107099","DOIUrl":"10.1016/j.orgel.2024.107099","url":null,"abstract":"<div>In this study, perovskite solar cells (PSCs) were fabricated using a two-step solution deposition method. A laser beam was applied at the interface between lead iodide (PbI2) and methylammonium iodide to change the reaction temperature and stimulate the growth of perovskite crystals. A notable enhancement was observed in the power conversion efficiency of PSCs. The laser scanning speed was investigated to control the reaction temperature and further control the crystallization and morphology of the perovskite film. Based on the optimized laser scanning speed, the best and average PCEs obtained were 14.33 % and 13.92 ± 0.52 %, respectively, which were higher than those achieved using the conventional technique (12.18 % and 11.37 ± 0.74 %, respectively) and the conventional heating methods (14.09 % and 13.28 ± 0.56 %, respectively). The optimal reaction temperature at the interface was predicted to be 80 °C under optimized conditions using the COMSOL software. This study will help in scaling this technique for large–area PSCs, optimizing the laser parameters for different perovskite compositions, and investigating the long-term stability of enhanced PSCs, boosting their commercial viability.</div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"132 ","pages":"Article 107099"},"PeriodicalIF":2.7,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141862822","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

Conductivity modulation in sodium caseinate biopolymer based resistive switching write-once-read-many times (WORM) memory device 基于酪蛋白酸钠生物聚合物的电阻开关式一次写入多次读取（WORM）存储器件中的电导率调制功能

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2024-07-25 DOI: 10.1016/j.orgel.2024.107101

Mainak Saha , Subham Dey , Sk Masum Nawaz , Abhijit Mallik

引用次数: 0

Optimization the potential of solution process fluorine passivated zinc oxide electron transport layer for stable InP-quantum dot light emitting diodes 优化溶液法氟钝化氧化锌电子传输层在稳定的 InP 量子点发光二极管中的应用潜力

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2024-07-24 DOI: 10.1016/j.orgel.2024.107098

Thuy Truong Thi , Nagarjuna Naik Mude , Nisha Vergineya S , Rasheeda Ansari , Ramchandra Pode , Jang Hyuk Kwon

{"title":"Optimization the potential of solution process fluorine passivated zinc oxide electron transport layer for stable InP-quantum dot light emitting diodes","authors":"Thuy Truong Thi , Nagarjuna Naik Mude , Nisha Vergineya S , Rasheeda Ansari , Ramchandra Pode , Jang Hyuk Kwon","doi":"10.1016/j.orgel.2024.107098","DOIUrl":"10.1016/j.orgel.2024.107098","url":null,"abstract":"<div>The pervasive use of zinc oxide (ZnO) as an electron transport layer in quantum dot (QD) electroluminescent devices is constrained due to its chemical instability with the QD layer and the formation of interface quenching sites. The effect of fluorine passivation of sol-gel processed ZnO in QD light-emitting devices (QLEDs) is investigated in depth. An examination of the interaction between the ZnO surface and fluorine species revealed that the passivation of oxygen vacancies and the formation of stable hydrogen bonds with hydroxyl groups on ZnO surface have a significant influence on the stability and efficiency of the device. Such exceptional functions of fluorine have been found to effectively capture defects at the interface between ZnO and the emissive layer, therefore mitigating the interface quenching sites. The initial fluorination device demonstrated a significant improvement in external quantum efficiency (EQE) from 5.72 % to 20.07 %, and half of the device lifetime (LT50 at an initial luminance of 1500 cd m−2) was 286 h. Further passivating the remaining active oxygen on the ZnO surface can extend the stability of the device to 542 h with an EQE of 15.2 %, which is among the longest lifetime reported so far for green InP-QLEDs. Our report offers the possibility of utilizing straightforward and highly effective fluorination by spin-coating technique to attain long-lasting InP-QLED devices with remarkable performance.</div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"132 ","pages":"Article 107098"},"PeriodicalIF":2.7,"publicationDate":"2024-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141773232","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 comprehensive review of organic frameworks: From synthesis to perovskite solar cells fabrication 有机框架综述：从合成到制造过氧化物太阳能电池

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2024-07-22 DOI: 10.1016/j.orgel.2024.107100

Jiajun Wu , Xiao Liang , Xianfang Zhou , Fei Wang , Haoran Lin , Quanyao Zhu , Hanlin Hu

引用次数: 0

Effective surface treatment for efficient and stable inverted inorganic CsPbI2Br perovskite solar cells 有效的表面处理可实现高效稳定的无机 CsPbI2Br 倒置型过氧化物太阳能电池

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2024-07-17 DOI: 10.1016/j.orgel.2024.107097

Qiuyue Gong , Shuo Huang , Haoyu Wang , Lang Wang , Shihan Cao , Xingchen She , Jun Zhang , Zhijun Wang , Jie Li , Hui Liu , Yong Liu , Hui Sun , Dingyu Yang , Xin Liu

{"title":"Effective surface treatment for efficient and stable inverted inorganic CsPbI2Br perovskite solar cells","authors":"Qiuyue Gong , Shuo Huang , Haoyu Wang , Lang Wang , Shihan Cao , Xingchen She , Jun Zhang , Zhijun Wang , Jie Li , Hui Liu , Yong Liu , Hui Sun , Dingyu Yang , Xin Liu","doi":"10.1016/j.orgel.2024.107097","DOIUrl":"10.1016/j.orgel.2024.107097","url":null,"abstract":"<div>The interest in all-inorganic perovskite solar cells (PSCs) featuring a p-i-n structure is on the rise, attributed to their superior heat resistance and adaptability with tandem cell methods. However, their progress has been far from the regular structure owing to the comparatively low open circuit voltage (Voc). This research employs phenylethylammonium iodide, incorporating various side groups, as passivators to tackle the previously mentioned problems and investigate their effects on passivation. It is found that a reduction of trap-state density in perovskite film was accomplished due to the PEAI effective passivation effect by establishing coordination with the under-coordinated Pb2+ ions. Furthermore, there was an enhancement in the alignment of energy levels at the CsPbI2Br perovskite/PCBM junction, resulting in better charge extraction from the CsPbI2Br layer to the charge transport layer. As a result, an improved champion efficiency of 14.26 % with a Voc of 1.11 V, Jsc of 16.21 mA/cm2, and FF of 79.28 % was yielded for the PEAI treatment inverted CsPbI2Br device, compared with the 12.15 % efficiency of the control device. Superior device stability was exhibited for the optimal PEAI-treated devices without encapsulation. This research validates the significance of a side group on a surface passivation molecule to effectively passivate defects and optimize energy levels, especially for boosting Voc.</div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"132 ","pages":"Article 107097"},"PeriodicalIF":2.7,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141729392","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

Introducing steric groups to thermally activated delayed fluorescence emitter for constructing efficient non-doped solution-processed organic light-emitting diodes 为热激活延迟荧光发射器引入立体基团，以构建高效的非掺杂溶液加工有机发光二极管

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2024-07-16 DOI: 10.1016/j.orgel.2024.107096

Yuheng Lou, Yang Yu, Yi Chen, Guimin Zhao, Wei Jiang, Yueming Sun

{"title":"Introducing steric groups to thermally activated delayed fluorescence emitter for constructing efficient non-doped solution-processed organic light-emitting diodes","authors":"Yuheng Lou, Yang Yu, Yi Chen, Guimin Zhao, Wei Jiang, Yueming Sun","doi":"10.1016/j.orgel.2024.107096","DOIUrl":"10.1016/j.orgel.2024.107096","url":null,"abstract":"<div>Solution-processed organic light-emitting diodes (OLEDs) remain a reliable approach towards large-area and flexible display devices, but also hold higher requirement on luminescent materials. It is still challenge to develop emitting layers with great solution-processable property and excellent luminous behavior, and especially difficult for non-doped emitting materials. In this work, a TADF emitter, namely 2,3,5,6-tetrakis(4-([1,1':3′,1″-terphenyl]-5′-yl)-9H-carbazol-9-yl)benzonitrile (3Ph-4CzBN), was designed and synthesized by introducing the steric-hindrance triphenyl unit to 2,3,5,6-tetrakis(carbazol-9-yl) benzonitrile (4CzBN) which is usually applied to vacuum evaporation. The incorporation of triphenyl groups significantly increased the molecule weight, thereby rendering 3Ph-4CzBN suitable for solution-processed OLEDs. Meanwhile, 3Ph-4CzBN exhibited two-fold of photoluminescence quantum yield values in pure film than 4CzBN, indicating fluorescence quenching was relatively suppressed by steric groups. The solution-processed OLEDs employed 3Ph-4CzBN as non-doped emitting layer, achieved a maximum external quantum efficiency of 12.8 %, as well as current efficiency and power efficiency up to 34.2 cd A−1 and 23.9 lm W−1, respectively.</div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"132 ","pages":"Article 107096"},"PeriodicalIF":2.7,"publicationDate":"2024-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141638268","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