@article{An2022, author = {An, Xiang and Yang, Jinghao and Xu, Man and Sun, Lili and Bai, Lubing and Wang, Kai and Zhuo, Zhiqiang and Zheng, Yingying and Lin, Jinyi and Ding, Xuehua and Liu, Yuyu and Xie, Linghai and Yin, Chengrong and Huang, Wei}, doi = {10.1016/j.cclet.2022.03.102}, journal = {Chinese Chemical Letters}, month = {dec}, pages = {5137-5141}, title = {Universal 4-qualifiable fluorene-based building blocks for potential optoelectronic applications}, url = {https://oadoi.org/10.1016/j.cclet.2022.03.102}, volume = {33}, year = {2022} } @article{Chang2021, abstract = { Eco-friendly printing is important for mass manufacturing of thin-film photovoltaic (PV) devices to preserve human safety and the environment and to reduce energy consumption and capital expense. However, it is challenging for perovskite PVs due to the lack of eco-friendly solvents for ambient fast printing. In this study, we demonstrate for the first time an eco-friendly printing concept for high-performance perovskite solar cells. Both the perovskite and charge transport layers were fabricated from eco-friendly solvents via scalable fast blade coating under ambient conditions. The perovskite dynamic crystallization during blade coating investigated using in situ grazing incidence wide-angle X-ray scattering (GIWAXS) reveals a long sol-gel window prior to phase transformation and a strong interaction between the precursors and the eco-friendly solvents. The insights enable the achievement of high quality coatings for both the perovskite and charge transport layers by controlling film formation during scalable coating. The excellent optoelectronic properties of these coatings translate to a power conversion efficiency of 18.26% for eco-friendly printed solar cells, which is on par with the conventional devices fabricated via spin coating from toxic solvents under inert atmosphere. The eco-friendly printing paradigm presented in this work paves the way for future green and high-throughput fabrication on an industrial scale for perovskite PVs. }, author = {Chang, Xiaoming and Fan, Yuanyuan and Zhao, Kui and Fang, Junjie and Liu, Dongle and Tang, Ming-Chun and Barrit, Dounya and Smilgies, Detlef-M. and Li, Ruipeng and Lu, Jing and Li, Jianbo and Yang, Tinghuan and Amassian, Aram and Ding, Zicheng and Chen, Yonghua and Liu, Shengzhong (Frank) and Huang, Wei}, doi = {10.34133/2021/9671892}, journal = {Research}, month = {jan}, title = {Perovskite Solar Cells toward Eco-Friendly Printing}, url = {http://downloads.spj.sciencemag.org/research/2021/9671892.pdf}, volume = {2021}, year = {2021} } @article{Chen2021, abstract = {AbstractSolution-processed metal-halide perovskites are emerging as one of the most promising materials for displays, lighting and energy generation. Currently, the best-performing perovskite optoelectronic devices are based on lead halides and the lead toxicity severely restricts their practical applications. Moreover, efficient white electroluminescence from broadband-emission metal halides remains a challenge. Here we demonstrate efficient and bright lead-free LEDs based on cesium copper halides enabled by introducing an organic additive (Tween, polyethylene glycol sorbitan monooleate) into the precursor solutions. We find the additive can reduce the trap states, enhancing the photoluminescence quantum efficiency of the metal halide films, and increase the surface potential, facilitating the hole injection and transport in the LEDs. Consequently, we achieve warm-white LEDs reaching an external quantum efficiency of 3.1% and a luminance of 1570 cd m−2 at a low voltage of 5.4 V, showing great promise of lead-free metal halides for solution-processed white LED applications.}, author = {Chen, Hong and Zhu, Lin and Xue, Chen and Liu, Pinlei and Du, Xuerong and Wen, Kaichuan and Zhang, Hao and Xu, Lei and Xiang, Chensheng and Lin, Chen and Qin, Minchao and Zhang, Jing and Jiang, Tao and Yi, Chang and Cheng, Lu and Zhang, Chenglong and Yang, Pinghui and Niu, Meiling and Xu, Wenjie and Lai, Jingya and Cao, Yu and Chang, Jin and Tian, He and Jin, Yizheng and Lu, Xinhui and Jiang, Lang and Wang, Nana and Huang, Wei and Wang, Jianpu}, doi = {10.1038/s41467-021-21638-x}, journal = {Nature Communications}, month = {mar}, title = {Efficient and bright warm-white electroluminescence from lead-free metal halides}, url = {https://doi.org/10.1038/s41467-021-21638-x}, volume = {12}, year = {2021} } @article{Chong2021, author = {Chong, Shaokun and Wei, Xuedong and Wu, Yifang and Sun, Lan and Shu, Chengyong and Lu, Qianbo and Hu, Yingzhen and Cao, Guozhong and Huang, Wei}, doi = {10.1021/acsami.0c22430}, journal = {ACS Applied Materials and Interfaces}, month = {mar}, pages = {13158-13169}, title = {Expanded MoSe2 Nanosheets Vertically Bonded on Reduced Graphene Oxide for Sodium and Potassium-Ion Storage}, url = {https://oadoi.org/10.1021/acsami.0c22430}, volume = {13}, year = {2021} } @article{Ding2020, abstract = {Abstract Halogen bonding is emerging as a significant driving force for supramolecular self-assembly and has aroused great interest during the last two decades. Among the various halogen-bonding donors, we take notice of the ability of 1,4-diiodotetrafluorobenzene (1,4-DITFB) to co-crystallize with diverse halogen-bonding acceptors in the range from neutral Lewis bases (nitrogen-containing compounds, N-oxides, chalcogenides, aromatic hydrocarbons and organometallic complexes) to anions (halide ions, thio/selenocyanate ions and tetrahedral oxyanions), leading to a great variety of supramolecular architectures such as discrete assemblies, 1D infinite chains and 2D/3D networks. Some of them act as promising functional materials (e.g. fluorescence, phosphorescence, optical waveguide, laser, non-linear optics, dielectric and magnetism) and soft materials (e.g. liquid crystal and supramolecular gel). Here we focus on the supramolecular structures of multicomponent complexes and their related physicochemical properties, highlight representative examples and show clearly the main directions that remain to be developed and improved in this area. From the point of view of crystal engineering and supramolecular chemistry, the complexes summarized here should give helpful information for further design and investigation of the elusive category of halogen-bonding supramolecular functional materials.}, author = {Ding, Xue-Hua and Chang, Yong-Zheng and Ou, Chang-Jin and Lin, Jin-Yi and Xie, Ling-Hai and Huang, Wei}, doi = {10.1093/nsr/nwaa170}, journal = {National Science Review}, month = {aug}, pages = {1906-1932}, title = {Halogen bonding in the co-crystallization of potentially ditopic diiodotetrafluorobenzene: a powerful tool for constructing multicomponent supramolecular assemblies}, url = {https://doi.org/10.1093/nsr/nwaa170}, volume = {7}, year = {2020} } @article{Li2021, abstract = {AbstractInspired by the 2D bilayer lipid membranes in nature, a unique supramolecular “push–pull” synergetic strategy toward self‐assembled 2D organic crystals (2DOCs) is proposed in this work, which can effectively suppress the interlayer 3D stacking while maintaining the assembly of the intralayer for 2D growth. For this purpose, a model molecule PF‐Py consisting of a planar supramolecular “attractor” and a nonplanar steric “repellor” is designed for the solution self‐assembly process. Well‐defined 2DOCs including crystal nanosheets and millimeter‐sized crystal films with layered amphiphile‐like packing are obtained, which is analogical to the cell membranes of living organisms. Thanks to the special packing mode, the 2DOCs have fascinating integrated photoelectric property, with high mobility of 7.8 × 10−2 cm2 V−1 s−1, high crystalline state photoluminescence quantum yield of 55%, and superior deep‐blue laser characteristics with a low threshold of 5.51 µJ cm−2. This supramolecular synergetic strategy advances the design of 2D organic semiconductor crystals for high performance optoelectronics.}, author = {Li, Yin‐Xiang and Dong, Xue‐Mei and Yu, Meng‐Na and Liu, Wei and Nie, Yi‐Jie and Zhang, Jing and Xie, Ling‐Hai and Xu, Chun‐Xiang and Liu, Ju‐Qing and Huang, Wei}, doi = {10.1002/smll.202102060}, journal = {Small}, month = {jul}, title = {A Bio‐Inspired Molecular Design Strategy toward 2D Organic Semiconductor Crystals with Superior Integrated Optoelectronic Properties}, url = {https://oadoi.org/10.1002/smll.202102060}, volume = {17}, year = {2021} } @article{Li2022, abstract = { Microfluidic-based organs-on-chips (OoCs) are a rapidly developing technology in biomedical and chemical research and have emerged as one of the most advanced and promising in vitro models. The miniaturization, stimulated tissue mechanical forces, and microenvironment of OoCs offer unique properties for biomedical applications. However, the large amount of data generated by the high parallelization of OoC systems has grown far beyond the scope of manual analysis by researchers with biomedical backgrounds. Deep learning, an emerging area of research in the field of machine learning, can automatically mine the inherent characteristics and laws of “big data” and has achieved remarkable applications in computer vision, speech recognition, and natural language processing. The integration of deep learning in OoCs is an emerging field that holds enormous potential for drug development, disease modeling, and personalized medicine. This review briefly describes the basic concepts and mechanisms of microfluidics and deep learning and summarizes their successful integration. We then analyze the combination of OoCs and deep learning for image digitization, data analysis, and automation. Finally, the problems faced in current applications are discussed, and future perspectives and suggestions are provided to further strengthen this integration. }, author = {Li, Jintao and Chen, Jie and Bai, Hua and Wang, Haiwei and Hao, Shiping and Ding, Yang and Peng, Bo and Zhang, Jing and Li, Lin and Huang, Wei}, doi = {10.34133/2022/9869518}, journal = {Research}, month = {jan}, title = {An Overview of Organs-on-Chips Based on Deep Learning}, url = {http://downloads.spj.sciencemag.org/research/2022/9869518.pdf}, volume = {2022}, year = {2022} } @article{Qin2022, author = {Qin, Yue and Yao, Lanqian and Zhang, Fangbo and Li, Ruiqing and Chen, Yujie and Chen, Yuehua and Cheng, Tao and Lai, Wenyong and Mi, Baoxiu and Zhang, Xinwen and Huang, Wei}, doi = {10.1021/acsami.2c09153}, journal = {ACS Applied Materials and Interfaces}, month = {aug}, pages = {38021-38030}, title = {Highly Stable Silver Nanowires/Biomaterial Transparent Electrodes for Flexible Electronics}, url = {https://oadoi.org/10.1021/acsami.2c09153}, volume = {14}, year = {2022} } @article{Shen2020, author = {Shen, Yue and Liu, Yucheng and Ye, Haochen and Zheng, Yiting and Wei, Qi and Xia, Yingdong and Chen, Yonghua and Zhao, Kui and Huang, Wei and Liu, Shengzhong (Frank)}, doi = {10.1002/anie.202004160}, journal = {Angewandte Chemie}, month = {jun}, pages = {15006-15012}, title = {Centimeter‐Sized Single Crystal of Two‐Dimensional Halide Perovskites Incorporating Straight‐Chain Symmetric Diammonium Ion for X‐Ray Detection}, url = {https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fange.202004160}, volume = {132}, year = {2020} } @article{Sun2022, author = {Sun, Lili and Sun, Ning and Xu, Man and Sun, Chen and Bai, Lubing and Lin, Jinyi and Xie, Linghai and Zhang, Xinwen and Wei, Qi and Yang, Yingguo and Huang, Wei}, doi = {10.1021/acsapm.1c00847}, journal = {ACS Applied Polymer Materials}, month = {mar}, pages = {2283-2293}, title = {Enhancing the Deep-Blue Emission Property of Wide Bandgap Conjugated Polymers through a Self-Cross-Linking Strategy}, url = {https://oadoi.org/10.1021/acsapm.1c00847}, volume = {4}, year = {2022} } @article{Sun2022_2, abstract = {AbstractConjugated polymer blends coupled by Förster resonance energy transfer (FRET) have been widely exploited to achieve optically pumped lasers operating at very low pumping thresholds. Among the plaid of conjugated polymers and molecules exploited for optical gain, fluorene‐based polymers are considered front‐runners, based on their high photoluminescence quantum yields, large optical gain coefficients, and their processability assets in films of high optical quality. Two archetypes of polymers with these properties are poly(9,9‐dioctyl‐fluorene) and its green‐emitting relative poly(9,9‐dioctylfluorene‐alt‐benzothiadiazole) that work as excellent FRET‐coupled blends but unexpectedly do not exhibit stimulated emission. In this study, light is shed upon the optical gain limiting factors of these blends. Upon investigating a series of poly(diarylfluorene‐co‐N‐phenyl) polymers bearing a different number of phenyl units inserted between the fluorenes (NPhs, N = 1, 2, 3), important improvements are revealed in the photoluminescence quantum yields and stimulated emission properties, as well as harnessing of exciton‐exciton annihilation. These effects are ascribed to disruption of exciton transport in NPhs motivated by changes in chain conformation and molecular packing upon phenyl‐insertion.}, author = {Sun, Chen and Bai, Lubing and Roldao, Juan Carlos and Burgos‐Caminal, Andrés and Borrell‐Grueiro, Olivia and Lin, Jinyi and Huang, Wei and Gierschner, Johannes and Gawelda, Wojciech and Bañares, Luis and Cabanillas‐González, Juan}, doi = {10.1002/adfm.202206723}, journal = {Advanced Functional Materials}, month = {sep}, title = {Boosting the Stimulated Emission Properties of Host:Guest Polymer Blends by Inserting Chain Twists in the Host Polymer}, url = {https://oadoi.org/10.1002/adfm.202206723}, volume = {32}, year = {2022} } @article{Wang2021, abstract = {An efficient CGU is applied to the high efficiency super-flexible white TOLEDs, which show a higher PE than the single OLEDs. After being bent for 3000 cycles, the devices retain ∼90% of the original luminance.}, author = {Wang, Jiong and Wang, Yuzhu and Qin, Yue and Li, Ruiqing and An, Jing-Xi and Chen, Yuehua and Lai, Wen-Yong and Zhang, Xinwen and Huang, Wei}, doi = {10.1039/d1tc01157j}, journal = {Journal of Materials Chemistry C Materials for optical and electronic devices}, month = {jan}, pages = {8570-8578}, title = {Highly efficient ultra-flexible tandem organic light-emitting diodes adopting a non-doped charge generation unit}, url = {https://oadoi.org/10.1039/d1tc01157j}, volume = {9}, year = {2021} } @article{Wang2021_2, author = {Wang, Jiong and Zhang, Mengke and Zhang, Yaqi and Fu, Jiawei and Qin, Yue and Li, Ruiqing and Chen, Yuehua and Lai, Wenyong and Zhang, Xinwen and Huang, Wei}, doi = {10.1016/j.orgel.2021.106202}, journal = {Organic Electronics}, month = {sep}, pages = {106202}, title = {Efficient inverted organic light-emitting devices using a charge-generation unit as electron-injection layers}, url = {https://oadoi.org/10.1016/j.orgel.2021.106202}, volume = {96}, year = {2021} } @article{Wang2021_3, abstract = {AbstractTo cut cost and improve device performance, expensive and acidic hole transport material (HTM) PEDOT:PSS is replaced by copper(I) thiocyanate (CuSCN) and NiOx in solution‐processed white organic light‐emitting diodes, respectively. However, the luminescence quenching caused by interfacial defects on the surfaces of CuSCN and NiOx limits the devices’ full potential. To crack the nuts, an ultrathin graphene oxide (GO) layer is inserted between hole transport layer (HTL) and emitting layer (EML) as a passivation layer. The time‐resolved photoluminescence spectra of EML intuitively prove the inhibitory effect of GO on exciton quenching. What is more, the ultraviolet photoelectron spectroscopy and impedance spectroscopy reveal that the ultrathin GO layer can also increase the work function of HTM and promote hole injection. Relative to the devices without a GO layer, the efficiency of CuSCN/GO‐containing device is enhanced from 18.1 cd A−1 (6.6 lm W−1) to 30.3 cd A−1 (19.8 lm W−1), and the device with NiOx/GO achieves an enhancement of power efficiency by 98%, from 10.1 to 20.0 lm W−1.}, author = {Wang, Jiong and Fan, Li‐Xiang and Wang, Yu‐zhu and Wang, Yang‐cheng and Qin, Yue and Li, Rui‐qing and Chen, Yue‐hua and Yan, Yu and Lai, Wen‐yong and Zhang, Xin‐wen and Huang, Wei}, doi = {10.1002/admi.202100794}, journal = {Advanced Materials Interfaces}, month = {sep}, title = {Interface Passivation and Hole Injection Improvement of Solution‐Processed White Organic Light‐Emitting Diodes through Embedding an Ultrathin Graphene Oxide Layer}, url = {https://oadoi.org/10.1002/admi.202100794}, volume = {8}, year = {2021} } @article{Wang2022, author = {Wang, Jiong and Zhang, Yaqi and Wang, Ruiting and Wang, Yangcheng and Zhang, Fangbo and Chen, Yuehua and Lou, Hui and Lai, Wenyong and Zhang, Xinwen and Huang, Wei}, doi = {10.1016/j.orgel.2021.106353}, journal = {Organic Electronics}, month = {jan}, pages = {106353}, title = {Lateral current suppression in tandem organic light-emitting diodes by adopting a buffer layer}, url = {https://oadoi.org/10.1016/j.orgel.2021.106353}, volume = {100}, year = {2022} } @article{Zhang2021, author = {Zhang, Hongwei and Zhao, Meiqi and Liu, Haoran and Shi, Shuangrui and Wang, Zhenhua and Zhang, Biao and Song, Lin and Shang, Jingzhi and Yang, Yong and Ma, Chao and Zheng, Lirong and Han, Yunhu and Huang, Wei}, doi = {10.1021/acs.nanolett.1c00077}, journal = {Nano Letters}, month = {feb}, pages = {2255-2264}, title = {Ultrastable FeCo Bifunctional Electrocatalyst on Se-Doped CNTs for Liquid and Flexible All-Solid-State Rechargeable Zn–Air Batteries}, url = {https://oadoi.org/10.1021/acs.nanolett.1c00077}, volume = {21}, year = {2021} } @article{Zhang2023, abstract = {AbstractThermally activated delayed fluorescence (TADF) materials have attracted great potential in the field of organic light‐emitting diodes (OLEDs). Among thousands of TADF materials, highly twisted TADF emitters have become a hotspot in recent years. Compared with traditional TADF materials, highly twisted TADF emitters tend to show multi‐channel charge‐transfer characters and form rigid molecular structures. This is advantageous for TADF materials, as non‐radiative decay processes can be suppressed to facilitate efficient exciton utilization. Accordingly, OLEDs with excellent device performances have also been reported. In this Review, we have summarized recent progress in highly twisted TADF materials and related devices, and give an overview of the molecular design strategies, photophysical studies, and the performances of OLED devices. In addition, the challenges and perspectives of highly twisted TADF molecules and the related OLEDs are also discussed.}, author = {Zhang, Tiantian and Xiao, Yuxin and Wang, Hailan and Kong, Shuting and Huang, Rongjuan and Ka‐Man Au, Vonika and Yu, Tao and Huang, Wei}, doi = {10.1002/ange.202301896}, journal = {Angewandte Chemie International Edition}, month = {jun}, title = {Highly Twisted Thermally Activated Delayed Fluorescence (TADF) Molecules and Their Applications in Organic Light‐Emitting Diodes (OLEDs)}, url = {https://oadoi.org/10.1002/ange.202301896}, volume = {135}, year = {2023} } @article{Zhao2022, abstract = {There exists a considerable density of interaggregate grain boundaries (GBs) and intra-aggregate GBs in polycrystalline perovskites. Mitigation of intra-aggregate GBs is equally notable to that of interaggregate GBs as intra-aggregate GBs can also cause detrimental effects on the photovoltaic performances of perovskite solar cells (PSCs). Here, we demonstrate full-scale GB mitigation ranging from nanoscale intra-aggregate to submicron-scale interaggregate GBs, by modulating the crystallization kinetics using a judiciously designed brominated arylamine trimer. The optimized GB-mitigated perovskite films exhibit reduced nonradiative recombination, and their corresponding mesostructured PSCs show substantially enhanced device efficiency and long-term stability under illumination, humidity, or heat stress. The versatility of our strategy is also verified upon applying it to different categories of PSCs. Our discovery not only specifies a rarely addressed perspective concerning fundamental studies of perovskites at nanoscale but also opens a route to obtain high-quality solution-processed polycrystalline perovskites for high-performance optoelectronic devices.}, author = {Zhao, Lichen and Tang, Pengyi and Luo, Deying and Dar, M. Ibrahim and Eickemeyer, Felix T. and Arora, Neha and Hu, Qin and Luo, Jingshan and Liu, Yuhang and Zakeeruddin, Shaik Mohammed and Hagfeldt, Anders and Arbiol, Jordi and Huang, Wei and Gong, Qihuang and Russell, Thomas P. and Friend, Richard H. and Grätzel, Michael and Zhu, Rui}, doi = {10.1126/sciadv.abo3733}, journal = {Science Advances}, month = {sep}, title = {Enabling full-scale grain boundary mitigation in polycrystalline perovskite solids}, url = {https://doi.org/10.1126/sciadv.abo3733}, volume = {8}, year = {2022} } @article{Zhao2023, abstract = {AbstractExposing active sites and optimizing their binding strength to reaction intermediates are two essential strategies to significantly improve the catalytic performance of 2D materials. However, pursuing an efficient way to achieve these goals simultaneously remains a considerable challenge. Here, using 2D PtTe2 van der Waals material with a well‐defined crystal structure and atomically thin thickness as a model catalyst, it is observed that a moderate calcination strategy can promote the structural transformation of 2D crystal PtTe2 nanosheets (c‐PtTe2 NSs) into oxygen‐doped 2D amorphous PtTe2 NSs (a‐PtTe2 NSs). The experimental and theoretical investigations cooperatively reveal that oxygen dopants can break the inherent Pt‐Te covalent bond in c‐PtTe2 NSs, thereby triggering the reconfiguration of interlayer Pt atoms and exposing them thoroughly. Meanwhile, the structural transformation can effectively tailor the electronic properties (e.g., the density of state near the Fermi level, d‐band center, and conductivity) of Pt active sites via the hybridization of Pt 5d orbitals and O 2p orbitals. As a result, a‐PtTe2 NSs with large amounts of exposed Pt active sites and optimized binding strength to hydrogen intermediates exhibit excellent activity and stability in hydrogen evolution reaction.}, author = {Zhao, Wen and Cui, Congcong and Xu, Yongheng and Liu, Qiyuan and Zhang, Yang and Zhang, Zihan and Lu, Shenci and Rong, Ziqiang and Li, Xinzhe and Fang, Yiyun and Huang, Wei}, doi = {10.1002/adma.202301593}, journal = {Advanced Materials}, month = {may}, title = {Triggering Pt Active Sites in Basal Plane of Van der Waals PtTe2 Materials by Amorphization Engineering for Hydrogen Evolution}, url = {https://oadoi.org/10.1002/adma.202301593}, volume = {35}, year = {2023} } @article{Zhu2022, author = {Zhu, Zhaohua and Zhu, Chao and Yang, Lei and Chen, Qian and Zhang, Linghai and Dai, Jie and Cao, Jiacheng and Zeng, Shaoyu and Wang, Zeyi and Wang, Zhiwei and Zhang, Wei and Bao, Jusheng and Yang, Lijuan and Yang, Yang and Chen, Bo and Yin, Chunyang and Chen, Hong and Cao, Yang and Gu, Hao and Yan, Jiaxu and Wang, Nana and Xing, Guichuan and Li, Hai and Wang, Xiaoyong and Li, Shaozhou and Liu, Zheng and Zhang, Hua and Wang, Lin and Huang, Xiao and Huang, Wei}, doi = {10.1038/s41563-022-01311-4}, journal = {Nature Materials}, month = {jul}, pages = {1042-1049}, title = {Room-temperature epitaxial welding of 3D and 2D perovskites}, url = {https://oadoi.org/10.1038/s41563-022-01311-4}, volume = {21}, year = {2022} }