Recent research team Huang Wei academician Collection

黄维院士团队近期研究成果集锦 Huang, flexible organic electronics and electronics specialists. Foreign academician of Chinese Academy of Sciences, Foreign Member of the Russian Academy of Sciences, the Asia-Pacific Academy of Materials, ASEAN Academy of Engineering and Technology, foreign academician of Pakistan Academy of Sciences, Ministry of Education, \”Cheung Kong Scholar\” Distinguished Professor, winner of National Outstanding Youth Science Foundation, the national \”973\” project chief the scientist. Academician Huang is the first in the world in polymer light emitting diode display and long-term research active in one of the well-known scholar of organic optoelectronics, flexible electronics field. From the early nineties began working across multiple disciplines physics, chemistry, materials, electronics, information and life and other international disciplines of organic optoelectronics, electronics and other cutting-edge flexible integration developed cross. In building a framework of organic optoelectronic disciplines theory, to achieve high performance organic semiconductors and multi-functional, and promote scientific and technological achievements into strategic emerging industries have done a lot full of pioneering, innovative and systematic research work, is China organic optoelectronic, and pioneer founder flexible electronics subjects. He first or corresponding author identity in \”Nature Nanotechnology •\” (Nature Nanotechnology), \”natural • Photonics\” (Nature Photonics), \”natural • Material\” (Nature Materials), \”natural • Communication\” (Nature Communications) SCI and other mainstream academic journals published more than 560 research papers, cited over 30,000 international counterparts times. By the United States, Singapore and China, more than 200 invention patents, published \”Organic Electronics\”, \”bio-photonics\” and other academic monographs. Won the second prize of National Natural Science Award, Ho Leung Ho Lee Foundation for Scientific and Technological Progress Award, Ministry of Education, Natural Sciences outstanding achievement award, Jiangsu Province Science and Technology Award first prize of science and technology awards, named \”China\’s top ten science and technology universities progress \”and so on. According to rough statistics, Huang academician from January 2020 to date a total of 84 articles. The following studies will be important to classify carding, were introduced from the light-emitting material in response to the five aspects, optical materials, energy, electron, and a flexible organic polymer nano to readers.

First, the light emitting material in response to the

1. \”Science Advances\”: Photochromic precise control, multi-level security printing

The photochromic materials important molecules has been advanced photonic applications, including fluorescence imaging, intelligent lens, an optical data storage and security. However, the photochromic material having a generally constant color and rate of color development in the same light conditions. Further, the adjustment of the photochromic behavior often requires a complicated chemical synthesis and purification process complicated, which makes the adjustment of the photochromic behavior inconvenient and inefficient. Recently, Professor Qiang and Huang Academy reported by changing their crystal violet lactone salicylaldehyde hydrazine (CVLSH) zinc complex counter ion, to achieve the coloring speed and coloring photochromic molecules demand fine control. Complexes of zinc controllable photochromic properties, the intelligent photochromic film, and the successful implementation of multi-level security printing was prepared. Their strategy is to build a light-responsive material paves the way for photochromic behavior of this material can be controlled as needed. 大家风采 | 黄维院士团队近期研究成果集锦 The full text link: https://advances.sciencemag.org/content/6/16/eaaz2386 Related: Huang academician, Professor Qiang \”Science Advances\”: precise control of light-induced color, multi-level security printing

2 \”ACS Nano\”:. made using flexible electrical scraped scale electroluminescent device

type alternating current electroluminescent device (ACEL) , as compared with the DC light-emitting device with low power consumption, light uniformity, to facilitate the production, etc., and the energy conversion efficiency is very high, much less heat is generated, so that it is expected to be integrated into wearable electronic devices (e.g., electronic skin )in. Most electroluminescent device using the electronic display and a smooth surface, high optical transparency as a plastic flexible substrate. But with the widespread use of plastics, a large plastic garbage landfill and incineration, causing serious pollution of groundwater and air, tremendous damage to our environment. Recently, Huang academician, Professor Liu Juqing and Professor Haidong team developed a flexible transient ACEL device is based on a transparent film of isinglass. Obtained fish gelatin film has good flexibility, a visible light transmittance of 91.1% at 24 days and can be completely degraded in the soil. By authorIn the film deposition of silver nanowires isinglass, a flexible transparent film electrode successfully prepared. Low sheet resistance electrode 22.4Ω / sq, and 82.3% transmittance retention. Based on silver nanowires – a flexible thin film electrode isinglass ACEL device the emission intensity at a voltage of 300 V (frequency of 400 Hz) for the working conditions 56.0 cd m-2, and showed good flexibility and biodegradability. 大家风采 | 黄维院士团队近期研究成果集锦 The full text link: https://dx.doi.org/10.1021/acsnano.9b09880 Related: turning waste into treasure! Huang Academy team \”ACS Nano\”: made with scraped scale flexible electroluminescent device!

3 \” Nature Communications\”: Three mode improve afterglow luminescent efficiency of the organic materials

The organic material refers to the afterglow after excitation is stopped can continue emitting light of the organic material. Which can be used in various fields, such as bio-imaging and information storage, and security sensors. However, there are only a few reports of afterglow efficiency (absorbed photons converted into afterglow efficiency) can exceed 10%, the afterglow of organic materials to achieve high efficiency of the afterglow is still a huge challenge. Recently, Huang and academician Professor Chen Runfeng has been successfully efficiency up to 45% of organic material afterglow. They stabilized by heat activation triplet excitons (T1 *) into the lowest triplet (T1), T1 is then converted to the singlet excited state (Sl), to give a spin allowed to emit light, thereby significantly reinforcing organic afterglow. This afterglow is room temperature S1, T1 and T1 * radiation attenuation caused by unconventional tri-mode emission. Afterglow since it has the highest efficiency reported to date, tri-mode afterglow concept represents a significant progress in the release of thermal activation by promoting stable triplet excitons to design efficient organic material afterglow. 大家风采 | 黄维院士团队近期研究成果集锦 The full text link: https://www.nature.com/articles/s41467-020-14669-3 Related: Huang academician \”Nature Communications\”: afterglow efficiency 45% ! Afterglow far the highest efficiency of the organic materials

4 \” Communication Nature\”: Polymer colorful room temperature phosphorescence

emitting light emission and a long lifetime adjustable functional material has recently become encrypted organic electronics and bioelectronics a powerful tool for learning applications. Fellow Huang, Fu Prof. public safety NTU Professor Zhaoyan Li proposed a copolymerized in the polymer by free-radical crosslinking multicomponent design strategies to achieve long color tunable organic room temperature phosphorescence (the UOP) a. By changing the excitation wavelength of 370 nm to 254, these polymers exhibit a multicolor light emission from blue to yellow, the long life of 1.2 s, the maximum quantum yield of phosphorescence at ambient conditions 37.5%. In addition, they also explored the use of these polymers in multi-level encryption information based on the color characteristics of the adjustable UOP. This strategy for the development of bio-label and multi-color light-emitting materials at room temperature long life paved the way. 大家风采 | 黄维院士团队近期研究成果集锦 Link: https://www.nature.com/articles/s41467-020-14792-1

5 \”Angew\”:. Stimulus responsive circle long rT phosphorescent organic polarization

at room temperature phosphorescence (RTP) and long RTP (OURTP) pure organic materials of concern in recent years. However, the circularly polarized emission (CPL) technology into RTP / OURTP is a challenge. Professor Chenrun Feng and Huang Academy proposed by achiral group is directly bonded to the fluorescent ester linkages to achieve chiral centers CPL active OURTP (CP-OURTP) strategy. Such a flexible chiral engineered so that the hand chain properties carbazole effectively transferred to the aggregate, so that upon photoactivation conformational regulation, resulting in life is more than 0.6 s, 2.3 × 10-3 asymmetry factor is strong CP- OURTP. Thus, CP-OURTP achieved is stable at room temperature, but at 50 ° C for rapid deactivation through CP-RTP, CPL has a high light stability during activation / deactivation of the thermal cycle. Based on this special optical / thermal response and high reversible CP-OURTP / RTP, a successfully established combinational logic devices having lived encryption CPL characteristics. 大家风采 | 黄维院士团队近期研究成果集锦 The full text link: https: //doi.org/10.1002/anie.201915164

Second, the photovoltaic material

1 \” Nature Electronics\”:. with the same two perovskite bidirectional optical signal transmission diode

to generate an optical signal received and integrated in one device, thereby allowing bi-directional optical signal transmission between the two identical devices, it is valuable for the development of miniaturization and integration of the photovoltaic device. However, the conventional solution processable semiconductor material and having an inherent design limitations, such that they can not be used for manufacturing high-performance device. Academician and Professor Gao Feng Huang Sweden Linkoping University, Shenzhen University, Professor Zhang Wenjing reported a work in transmit mode and simultaneous detection of perovskite-efficient solution diode. The device can be switched between modes by changing the bias direction, and it has more than 21% of external quantum efficiency and Ya Piwa order light detection limit. Two functions of the operating speed can reach tens of megahertz. Thanks to small displacements Stokes perovskite, their emission diodes (~ 804 nm) displayed at a high detectivity than (more than 2 × 1012 Jones) at its peak, which allows the same diode the light between two handshaking. To illustrate the potential of bifunctional diode, they proved that it can be used to make monolithic pulse sensor and a bidirectional optical communication system. 大家风采 | 黄维院士团队近期研究成果集锦 The full text link: http://dx.doi.org/10.1038/s41928-020-0382-3 Related: significant progress! Huang Fellow Northwestern Polytechnical University team \”natural • Electronics\”: optoelectronics research perovskite breakthrough

2 \”Nature Photonics\”:. Has Ruddlesden-Popper interlayer interactions perovskite solar cell

dimensional Ruddlesden-Popper (2DRP) compared to the three-dimensional perovskite phase perovskite, with better light stability and environmental stability. However, for the interaction between the bulky alkyl ammonium and 2DRP perovskite skeleton, the basic problem remainsRemain. Huang Academy of Sciences, Nanjing University and Professor Lijun – hua Jilin University demonstrated a new bulky alkylammonium 2- (methylthio) ethylamine hydrochloride (MTEACl) the presence of sulfur – sulfur interaction. In addition to the weak van der Waals interactions, interactions that the two molecules MTEA (MTEA) between the sulfur atom 2 (MA) 4Pb5I16 (n = 5) of the perovskite structure having enhanced stability and charge transport. The results showed that, 2DRP perovskite solar cell having significantly improved efficiency and stability. Battery power conversion efficiency as high as 18.06% (17.8% certified), moisture resistance up to 1512 h (at 70% humidity), thermal stability up to 375 h (at 85 ° C), good stability under continuous illumination (run 1000 h at the maximum power point can maintain initial efficiency of 85%). 大家风采 | 黄维院士团队近期研究成果集锦 Link: https://www.nature.com/articles/s41566-019-0572-6

3 \”AM\”:. A perovskite mining of the solar cell toxic bifunctional antisolvent

preparation of perovskite-quality film solar cell is the key to high performance perovskite (of PSCs) implementation. Important factors effective balance between the solvent and anti-solvent are adjusted perovskite high spin coating and the film during thermal annealing. Academician and Professor Qin Huang Tianshi Nanjing University of Technology has developed a green, non-halogenated, non-toxic bifunctional (anti) solvent benzoate (MB), it not only as an anti-solvent, rotating coated perovskite step seed crystals generated rapidly, and as a curing agent precursor digestion perovskite, prevent the loss of organic components during thermal annealing, and effectively inhibit the formation of lead heteroaryl halide phase. Therefore, the new bifunctional (anti) solvent is used in the nip-PSCs plane, for producing high quality perovskite layer, thereby obtaining a high power conversion efficiency of 22.37%, and having a negligible hysteresis and> 1300h stability. Further, since the high boiling point and low volatility characteristics of the MB, PSCs may be repeated to obtain high performance at different operating temperatures (22-34 ° C). Therefore, the development of bifunctional solvent system can be upgraded to PSCs and business in all seasons and regions of the worldTechnology provides a promising platform. 大家风采 | 黄维院士团队近期研究成果集锦 Link: https://onlinelibrary.wiley.com/doi/10.1002/adma.201907123

4 \”Advanced Science\”:. Rapid microwave annealing process, high performance booster perovskite photovoltaic device

perovskite-type solar cell (of PSCs) in the rapid processing technology provides a way to exciting improve production efficiency. Professor Qin and Huang Academy SkyLite Nanjing University reported a rapid microwave annealing process (MAP), to replace the conventional thermal annealing process plate (HAP), and will shorten the processing period of the perovskite to less than 1 minute. Thanks to microwave radiation and simultaneous penetration, the MAP method can effectively eliminate the perovskite thin film hetero phase, thereby obtaining a large grain size greater than 1μm. The perovskite thin film was treated with MAP pure crystalline phase, a long carrier lifetime and low defect density, which can significantly improve the efficiency PSC without additional enhancer / passivation layer. Planar inverted PSCs improve power conversion efficiency from 18.33% (HAP) to 21.59% (MAP) and good stability, life under ambient conditions for> 1000 hours without encapsulation. Further, the MAP can also be applied in the preparation of perovskite thin films, and greater resistance to a large size (10cm × 10cm) to ambient temperature and precursor concentration, making a reusable perovskite actually prepared a photovoltaic material reliable way. 大家风采 | 黄维院士团队近期研究成果集锦 Link:. Https://doi.org/10.1002/advs.202000480

5 \”Angew\”: A ammonium acetate efficient, stable whole inorganic calcium full inorganic perovskite lead perovskite halide photovoltaic device

having improved stability is a potentially promising candidate materials for photovoltaic applications. However, since the most commonly used N, N- limit of the solvent dimethylformamide (DMF) and dimethyl sulfoxide (DMSO), basic problem perovskite precursor solution remains in the components to interact. Huang academician Professor Chan Wing-wah and a simple reportEffective interaction clipping strategy that relates to ionic liquid solvent methyl ammonium acetate (MAAC), for all CsPbI3-xBrx inorganic perovskites. They found C = O with lead (Pb2 +) with a strong interaction, and observed to form N-H … I hydrogen bonds. This interaction perovskite stable precursor solution, and by delaying crystallization, so no pinholes, large grain, high-quality full-inorganic perovskite flat film production is possible. By one step, without an anti-solvent process, air humidity regardless how processing method, corresponding photovoltaic cell exhibited 17.10% efficient, long run stability over 1500 hours under continuous light. 大家风采 | 黄维院士团队近期研究成果集锦 The full text link:. https://doi.org/10.1002/anie.202004256

Third, the energy

1 \”ACS Nano\”: graphene quantum dot / graphene heterojunction van der Waals attractive for photo-assisted water

Van der Waals assembled two-dimensional material constituting the heterojunction due to efficient electronic coupling, electron hole pairs are separated, charge transfer, a low energy barrier, adjustable bandgap and other properties recently attracted great research interest. Academician Professor Chen Peng Huang, Northwestern Polytechnical University and Nanyang Technological University rollout of a new type of zero-dimensional / 2 Weifan Edward heterojunction, it has excellent photo-water performance, and easy to scale production. The heterojunction based on zero-dimensional quantum dots and graphene two-dimensional graphene sheets. Nitrogen sulfur doped graphene quantum dots with a narrow band gap can promote light absorption, low Schottky barrier and facilitate separation of the photogenerated charge transfer, a significant surface charge and the rearrangement of the surfactant-rich sites are conducive to greatly improve the performance of photo-catalytic water. Production cost graphene quantum dot, while achieving a heteroatom doped modification, this provides the possibility of practical application of the new zero-dimensional carbon material widely. At the same time, this work conveniently and efficiently preparing a pure single-layer graphene sheet provides a new method also. 大家风采 | 黄维院士团队近期研究成果集锦 The full text link: https://doi.org/10.1021/acsnano.9b09554 Related: Huang academician \”ACS Nano\”: Graphene quantum dots / GraphiteAdvances in water solution photoelectrocatalysis alkenyl van der Waals Heterojunction

2 \”National Science Review\”:. Heterojunction hollow shell for continuously collecting sunlight

In nature, to maximize the absorption of light and increase the efficiency of photosynthesis, i.e. in the old living cyanobacteria widely exist continuously collected light. Inspired by nature, Huang Academy of Sciences, Institute of Process Engineering, Chinese Academy of Sciences, the National Science and Technology Institute of China researcher Wang Dan propose a new time – space sequence capture the concept of single particles of light, designed by the porous shell nanoparticle subunits non-uniform multi-hollow shell structure (HoMSs). Structurally, HoMSs different bandgap material, thereby achieving efficient capture of light at different wavelengths. Further, the introduction of oxygen vacancies in each subunit nanoparticles may also enhance optical absorption. HoMSs using the continuously captured light, the quantum efficiency at a wavelength of 400nm increased 6 times higher than the corresponding nanoparticles. It is impressive, using the material as a photocatalyst, to achieve an efficient photocatalytic decomposition of water, which can not be achieved nanoparticles. This time – a new concept of space to collect sunlight order to address the growing demand for energy has paved the way. 大家风采 | 黄维院士团队近期研究成果集锦 Link:. https://doi.org/10.1093/nsr/nwaa059

Fourth, the flexible electronics

1 \”Nano Letters\” : metallic \”sandwich\” structure aerogels for a flexible electronic sensor device

with the rapid development of the strain sensor in a flexible man-machine interface, a flexible robot, medical care and other fields, flexible strain sensor to give a wide range of research. Professor Zhuji Xin Huang Academy first reported a new strategy prepared in situ catalytic metal hybrid airgel, carbon nanotube array of the hybrid nanosheets and vertically aligned by vanadium nitride (VN) (VN / CNTs ) modification is made. In this configuration, a two-dimensional nano-sheet VN main bone structure of the flexible device having good compatibility in the repeating structural deformation. Further, the interlayer hybrid airgel formed three-dimensional network of high conductivity, has a significant sensitivity to strain response behavior. Moreover, Successfully prepared based VN / CNTs flexible strain sensor, in a small strain range of 10%, up to 386 gauge factor, fast response, has excellent durability. And successfully sensor-based monitoring and control system for real-time man-machine physical signals. 黄维院士团队近期研究成果集锦 The full text link: https://pubs.acs.org/doi/10.1021/acs.nanolett.0c00372 Related: Huang academician, professor Zhuji Xin \”Nano Lett.\”: Based on metallic \”sandwich\” structure of the man-machine control airgel flexible electronic sensing device

Fifth, the nano-organic polymer

1 \”Nature communications\”: control stereoselective organic nano polymer had a

lattice having sharp edges and vertices, representing the architecture of a frame for mounting and multipurpose nanoscale building blocks, but it is difficult to control in stereoselective synthesis. Academician Professor Huang reconciliation Bering Sea reported a method for forming a crescent-shaped hand-painted hand over the pro-grid electricity grid of diastereoselective containing nitrous fluorene substrate (AmBn) of the. In the process of the lattice A1B1 type of substrate, meso- selectivity of 75.6% diastereomeric excess (de), poly lattice of A2B2 type monomers, meso- selectivity remained at about 80% de. This stems from two dimensional control over the charge from the central domain electrophiles symmetrical molecular packing, having π-π stacking synergistic attraction and Coulomb repulsion. Since the length of meso- stereoregular structure of 20~30 nm, the rigid ring / chain of alternating poly lattice Mark-Houwink index of 1.651, a molecular weight (M) depends on the hydrodynamic radius Rh ~ M1.13. By folding the analog chain, poly meso- lattice structure is still used as a rod-like configuration, which is advantageous to increase the rigidity of the organic polymer nano different from rac Poly cyclic skeleton lattice. 大家风采 | 黄维院士团队近期研究成果集锦 The full text link: https://www.nature.com/articles/s41467-020-15401-x Related: Huang academician, teaching solution Bering SeaTeam award: a major breakthrough in the field of nano-organic polymer

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