Organic Electronics最新文献_第2页

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 : 2025-03-24 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":"2025-03-24","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

TADF and hyperfluorescence: Pushing the frontiers of organic optoelectronics TADF和高荧光：推动有机光电子学的前沿

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-03-19 DOI: 10.1016/j.orgel.2025.107240

Chihaya Adachi, Lian Duan

引用次数: 0

Red thermally activated delayed fluorescence materials for high-performance organic light-emitting diode 高性能有机发光二极管用红色热激活延迟荧光材料

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-03-11 DOI: 10.1016/j.orgel.2025.107238

Jiaxuan Wang , Chao Jiang , Chi Cao , Xuming Zhuang , Baoyan Liang , Yue Wang , Hai Bi

{"title":"Red thermally activated delayed fluorescence materials for high-performance organic light-emitting diode","authors":"Jiaxuan Wang , Chao Jiang , Chi Cao , Xuming Zhuang , Baoyan Liang , Yue Wang , Hai Bi","doi":"10.1016/j.orgel.2025.107238","DOIUrl":"10.1016/j.orgel.2025.107238","url":null,"abstract":"<div><div>Developing red thermally activated delayed fluorescence (TADF) materials is challenging but crucial for realizing full-color displays and solid-state lighting systems. In this work, we propose a novel design strategy that connects two emitting units to a phenyl ring to create efficient red luminescent materials. Two D-A-π-A-D type TADF molecules with mild-twist structures, <em>m</em>-DTPAQCN and <em>p</em>-DTPAQCN, were designed and synthesized. These molecules incorporate an electron-withdrawing acceptor of quinoxaline-6,7-dicarbonitrile group and an electron-donating donor of triphenylamine group. Both <em>m</em>-DTPAQCN and <em>p</em>-DTPAQCN exhibit red emissions in toluene solutions at 607 nm and 614 nm, respectively, and in doped films at 618 nm and 627 nm. The doped films, prepared with varying doping concentrations, demonstrate excellent photoluminescence quantum yields (PLQYs) ranging from 60.10 % to 84.70 %. The corresponding organic light-emitting diodes (OLEDs) employing <em>m</em>-DTPAQCN and <em>p</em>-DTPAQCN as emitters present efficient red electroluminescence with a maximum external quantum efficiency of 17.37 % and 20.05 %, respectively. This work provides a new and effective strategy for designing efficient red TADF molecules, offering significant potential for application in OLEDs.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"141 ","pages":"Article 107238"},"PeriodicalIF":2.7,"publicationDate":"2025-03-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619121","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

Performance improvement of ZnO nanorod arrays / ZnO quantum dots / P3HT hybrid photodetector by Au nanoparticles 金纳米颗粒对ZnO纳米棒阵列/ ZnO量子点/ P3HT混合光电探测器性能的改善

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-03-11 DOI: 10.1016/j.orgel.2025.107239

Taotao Rao , Qian Qiao , Jun Zhou , Jian Zheng , Xuan Yu , Xiaoming Yu , Cunxi Zhang , Rui Wang

引用次数: 0

Study on the influence of hole transport materials on the response speed of organic photodetectors by time-of-flight technique 利用飞行时间技术研究空穴传输材料对有机光电探测器响应速度的影响

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-03-08 DOI: 10.1016/j.orgel.2025.107237

Jinghao Fu, Dezhi Yang, Ji Li, Guo He, Dechao Guo, Rentao Dong, Dongge Ma

{"title":"Study on the influence of hole transport materials on the response speed of organic photodetectors by time-of-flight technique","authors":"Jinghao Fu, Dezhi Yang, Ji Li, Guo He, Dechao Guo, Rentao Dong, Dongge Ma","doi":"10.1016/j.orgel.2025.107237","DOIUrl":"10.1016/j.orgel.2025.107237","url":null,"abstract":"<div><div>Organic photodetectors (OPDs) offer some advantages, including flexibility, cost-effectiveness, wavelength tunability, and lightweight, making them compelling alternatives to inorganic photodetectors across numerous applications. However, the low charge carrier mobility of organic semiconductors greatly limits the response speed of OPDs, which remains a significant challenge to further enhance the response speed of these devices to meet the demands of communication and other fields. Previous studies have mainly focused on the efforts to enhance the response speed, but the relationship between response speed and charge carrier transport characteristics has been rarely explored. In this study, we employ the time-of-flight technique to investigate the mobility characteristics of different hole transport layer materials, MCBP and TCTA, and their impact on response speed of the resulting OPDs. The OPD utilizing TCTA as the hole transport layer has achieved a -3dB bandwidth of up to 85 MHz. Compared with MCBP with higher mobility, the stronger transport dispersion of TCTA makes it a more suitable choice for fast-response OPDs, suggesting that the response speed is not solely determined by the mobility of charge carrier transport layer materials.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"141 ","pages":"Article 107237"},"PeriodicalIF":2.7,"publicationDate":"2025-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619122","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

Thermally activated delayed fluorescence host materials with bulky indolocarbazole derivatives acceptors for high-performance solution-processed OLEDs 具有大体积吲哚咔唑衍生物受体的热激活延迟荧光主体材料用于高性能溶液处理oled

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-03-07 DOI: 10.1016/j.orgel.2025.107236

Xixuan Wang, Guimin Zhao, Wei Jiang, Yueming Sun

{"title":"Thermally activated delayed fluorescence host materials with bulky indolocarbazole derivatives acceptors for high-performance solution-processed OLEDs","authors":"Xixuan Wang, Guimin Zhao, Wei Jiang, Yueming Sun","doi":"10.1016/j.orgel.2025.107236","DOIUrl":"10.1016/j.orgel.2025.107236","url":null,"abstract":"<div><div>The design and development of large steric-hindrance host materials can effectively solve the quenching of triplet excitons, so as to improve the utilization of excitons and the performance of organic light-emitting diodes (OLED) devices. In this work, four large volume thermally activated delayed fluorescence (TADF) host materials were synthesized using triazine derivatives as electron acceptors and indolocarbazole derivatives as electron donors. Systematic studies demonstrated that introducing tert-butyl carbazole into indolocarbazole derivatives not only increased the steric hindrance of the molecule but also improved its thermodynamic stability. The decomposition temperatures (T<sub>d</sub>) of TRZ-tCzICz and MeTRZ-tCzICz reached 449 °C and 481 °C, and there was no significant glassing transition temperature (T<sub>g</sub>) in the range of 20–200 °C. The strategy of introducing methyl into triazine effectively separated HOMO and LUMO of molecule, resulting in smaller singlet-triplet splitting (Δ<em>E</em>ST) and larger reverse intersystem crossing rates (<em>k</em><sub>RISC</sub>). Among the four molecules, the <em>k</em><sub>RISC</sub> of TRZ-tCzICz and MeTRZ-tCzICz reached 2.07 × 10<sup>6</sup> s<sup>−1</sup> and 2.16 × 10<sup>6</sup> s<sup>−1</sup>, respectively. All four synthesized molecules had relatively high triplet energy levels and can serve as host materials for green TADF compounds. With 4CzIPN as the dopant, the solution processable OLED devices based the four compounds as the host materials achieved maximum external quantum efficiency (EQE<sub>max</sub>) of 11.13 %.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"141 ","pages":"Article 107236"},"PeriodicalIF":2.7,"publicationDate":"2025-03-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143619119","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

Efficient post-treatment strategy for enhancing the performance and stability of the inverted perovskite solar cells based on Boc-D-Val-OH 提高Boc-D-Val-OH倒置钙钛矿太阳能电池性能和稳定性的有效后处理策略

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-03-01 DOI: 10.1016/j.orgel.2025.107228

Fu Liu , Yijun Zhu , Jian Xiong , Zhen He , Yuanwei Pu , Yongchao Liang , Qiaofei Hu , Yinqi Zuo , Qiyu Yang , Dongjie Wang , Yu Huang , Qiaogan Liao , Zheling Zhang , Jian Zhang

{"title":"Efficient post-treatment strategy for enhancing the performance and stability of the inverted perovskite solar cells based on Boc-D-Val-OH","authors":"Fu Liu , Yijun Zhu , Jian Xiong , Zhen He , Yuanwei Pu , Yongchao Liang , Qiaofei Hu , Yinqi Zuo , Qiyu Yang , Dongjie Wang , Yu Huang , Qiaogan Liao , Zheling Zhang , Jian Zhang","doi":"10.1016/j.orgel.2025.107228","DOIUrl":"10.1016/j.orgel.2025.107228","url":null,"abstract":"<div><div>Recombination losses from perovskite/fullerene interface issues significantly limit the performance and stability of inverted perovskite solar cells (PSCs). A simple post-treatment method based on Boc-D-Val-OH (BDVO) is developed to overcome these issues. A systematic study has been conducted on the impact of BDVO on the physical properties of the film and the device. The results confirm that BDVO post-treatment can passivate trap states of the perovskite film surface, improve contact at the perovskite/fullerene interface, and enhance the built-in interface electrical field of the device. That improvements lead to enhanced carrier transport dynamics, as well as improves the performance and stability of PSCs. A relatively higher power conversion efficiency (PCE) of 23.02 % is achieved by BDVO post-treatment. Additionally, after storage in air (30–40 RH%) for 264 h (12 days) and in N<sub>2</sub> for 312 h (13 days), the PCE of the BDVO devices can remain at 90 % and 95 % of their initial values, respectively, while the control devices under the same exposure conditions only maintain 83 % and 88 % of their initial PCE values. The study sheds light on the pathway for perovskite/fullerene interface material selection and design, aimed at enhancing device performance and stability through streamlined post-treatment.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"141 ","pages":"Article 107228"},"PeriodicalIF":2.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143547938","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

High-CRI warm white OLEDs based on TADF-Doped Exciplex Co-host Structure enabled by efficient reverse intersystem crossing 基于tadf掺杂激复共主结构的高显色温白光oled的高效反向系统间交叉

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-03-01 DOI: 10.1016/j.orgel.2025.107229

Zeyu Jia, Xiangqiong Xie, Zhenyong Guo, Zhiqi Kou

{"title":"High-CRI warm white OLEDs based on TADF-Doped Exciplex Co-host Structure enabled by efficient reverse intersystem crossing","authors":"Zeyu Jia, Xiangqiong Xie, Zhenyong Guo, Zhiqi Kou","doi":"10.1016/j.orgel.2025.107229","DOIUrl":"10.1016/j.orgel.2025.107229","url":null,"abstract":"<div><div>In this work, we present a high-performance warm white organic light-emitting diode (WOLED) achieving a maximum color rendering index (CRI) of 95, based on a novel TADF-Doped Exciplex Co-host Structure. The device design integrates a blue exciplex (mCP:PO-T2T) as the host material, sensitizing ultrathin phosphorescent layers emitting green, yellow, and red light. By systematically varying the thickness of spacer and ultrathin layers, the position of the exciton recombination zone was finely tuned, revealing its critical role in exciton transport dynamics and energy transfer efficiency. To optimize exciton transport pathways, the TADF material 4CzTPN was strategically incorporated into the spacer layers. This incorporation significantly altered the exciton transfer mechanism by facilitating efficient reverse intersystem crossing (RISC) and promoting Förster energy transfer from the exciplex to phosphorescent emitters. Consequently, this approach not only reduces triplet exciton density, mitigating Dexter transfer losses, but also enhances exciton utilization efficiency. As a result, the WOLED achieves warm white light emission with a high CRI closely aligned with the Planckian locus on the CIE chromaticity diagram. These findings demonstrate the transformative potential of the TADF-Doped Exciplex Co-host Structure for developing efficient and color-stable WOLEDs, paving the way for next-generation lighting and display technologies.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"141 ","pages":"Article 107229"},"PeriodicalIF":2.7,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143578807","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 rapid UV/Vis assisted designing of benzodithiophene based polymers by machine learning to predict their light absorption for photovoltaics 基于机器学习的苯二噻吩基聚合物的快速紫外/可见辅助设计，以预测其对光伏的光吸收

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-02-22 DOI: 10.1016/j.orgel.2025.107227

Abrar U. Hassan , Cihat Güleryüz , Sajjad H. Sumrra , Sadaf Noreen , Mohamed H.H. Mahmoud

{"title":"A rapid UV/Vis assisted designing of benzodithiophene based polymers by machine learning to predict their light absorption for photovoltaics","authors":"Abrar U. Hassan , Cihat Güleryüz , Sajjad H. Sumrra , Sadaf Noreen , Mohamed H.H. Mahmoud","doi":"10.1016/j.orgel.2025.107227","DOIUrl":"10.1016/j.orgel.2025.107227","url":null,"abstract":"<div><div>As global energy demands escalate, developing high-performance photovoltaic (PV) materials through accelerated design methodologies is imperative. A machine learning (ML) assisted predictive models are used to accelerate the design of benzodithiophene (BDT)-based polymers for their PV applications. The current approach leverages a curated dataset of 191 compounds with experimental UV–Vis spectra, mapped to molecular electronic descriptors via RDKit. Random Forest modeling yields a predictive framework (R<sup>2</sup> = 0.98) for predicting their maximum absorption (<em>λ</em><sub>max</sub>). After it, their 5000 new designs as novel polymers, identifying top performers with Synthetic Accessibility Likelihood Index scores up to 57, ensuring synthesis feasibility have also been designed. Feature importance analysis highlights MaxPartialCharge and Aromatic rings as crucial descriptors. The designed materials exhibit optimal energy gaps (1.35–2.0 eV), paving the way for efficient PV devices. The computed UV–Vis spectra of best predicted polymers are studied with their <em>λ</em><sub>max</sub> range of 487–987 nm showing a significant redshift behavior. The designed polymers presents and good potential towards and they can be good candidates for organic solar cell applications.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"141 ","pages":"Article 107227"},"PeriodicalIF":2.7,"publicationDate":"2025-02-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143535403","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

Developed non-fullerene acceptors with modified BTPT-OD donor core: A DFT and TD-DFT methods to boost organic solar cell performances 开发具有修饰BTPT-OD供体核心的非富勒烯受体：DFT和TD-DFT方法提高有机太阳能电池的性能

IF 2.7 4区工程技术

Organic Electronics Pub Date : 2025-02-21 DOI: 10.1016/j.orgel.2025.107226

Walid Taouali , Amel Azazi , Rym Hassani , Entesar H. EL-Araby , Kamel Alimi

{"title":"Developed non-fullerene acceptors with modified BTPT-OD donor core: A DFT and TD-DFT methods to boost organic solar cell performances","authors":"Walid Taouali , Amel Azazi , Rym Hassani , Entesar H. EL-Araby , Kamel Alimi","doi":"10.1016/j.orgel.2025.107226","DOIUrl":"10.1016/j.orgel.2025.107226","url":null,"abstract":"<div><div>In this study, density functional theory (DFT) and time-dependent (TD) DFT were employed in order to conduct electronic structure predictions of four novel non-fullerene acceptors (NF2-NF5) generated from the recently synthesized acceptor BTPT-OD (NF1). We provided detailed information about charge transfer and optoelectronic properties of tailored structures, and we compared them to the reference compound. Compared to the energy gap of the reference molecule (2.09 eV), all developed molecules showed a smaller energy gap (2.00–2.08 eV). The created molecules, NF3 and NF4, exhibit high dipole moments of 8.902 D and 6.988 D, respectively, which may enhance the charge transfer rate. Maximum absorption of NF3-NF5 compounds (<em>λ</em><sub>max</sub>, 686.7–694.6 nm) revealed a red shift in absorption as compared to the primary molecule NF1 (<em>λ</em><sub>max</sub> = 676.9 nm). Based on the earlier research (J. Comput. Chem. 2023, 44, 2130–2148), we employed the recently modified Scharber plot to highlight the role of a narrower electronic gap in the proposed non-fullerene acceptors to enhance the power conversion efficiency. Among all tailored molecules, NF3 showed enhanced photovoltaic parameters; it exhibits a short circuit current density of J<sub>sc</sub> = 11.34 mA/cm<sup>2</sup>, an open circuit voltage of V<sub>OC</sub> = 1.09 V, and a power conversion efficiency of PCE = 5.35 %, while reference molecule photovoltaic parameters are J<sub>sc</sub> = 09.43 mA/cm<sup>2</sup>, V<sub>OC</sub> = 1.03 V, and PCE = 4.21 %.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"140 ","pages":"Article 107226"},"PeriodicalIF":2.7,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143488939","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