Cao Yong Fellow team highlights the latest research results
, born in October 1941, Changsha, Hunan. Chinese Academy of Sciences, TWAS Fellow, Fellow of the Royal British Chemical Society, 973 chief scientist, former State Key Laboratory of Luminescence Materials and Devices, director of South China University of Technology, Institute of Polymer Optoelectronic Materials and Devices Director, organic photoelectric world-renowned scientist field.
- In 1965 graduated from the former Soviet Union, Department of Chemistry, University of Leningrad polymer, Bachelor of Chemistry.
- 1979 to 1981 in Physical Chemistry Department of the University of Tokyo in Japan professional training
- 1987 Doctor of Science, University of Tokyo.
- In 1988 the State Science and Technology Commission awarded the \”outstanding contributions of outstanding young science and technology experts,\” the title.
- 1988 to 1990, then-University of California, Santa Barbara and a senior fellow at the Research Institute of Organic polymer solid.
- From 1990 to 1998, then-California Santa Barbara UNIAX senior researcher.
- Since 1998 Professor of Materials Institute of South China University of Technology, Professor. Relationship between structure and properties of materials and devices and the light emitting conductive polymer is mainly engaged in research, such as a driving board, a light emitting device integrated like. New concept \”anion induced workability\” of the conductive polymer solution of high conductivity and workability can not be satisfied at the same time the problem; developed the first successful large-area flexible plastic base light emitting diode; first in the world indicating that the polymer in the electroluminescent diode electrically fluorescence quantum efficiency may be 25% of the quantum statistical rules, promoting the development of polymer light-emitting diodes. In the Nature , Nature Photonics , Advanced Materials , Journal of the American Chemical Society and other SCI mainstream academic journals published research papers more than 600 he cited more than 30,000 times.
- in 1988 by the State Science and Technology Commission awarded the title of young scientists with outstanding contributions,
- 1988 and 2010, respectively, the National Natural Science Award two,
- in 2009 by the Guangdong Provincial Science Progress Award,
- won the 2014 Outstanding Scientific Research Ministry of Education achievement award,
- in 2015 by the national Natural Science Award,
- in 2015 by the Guangdong Provincial Science and technology Award for outstanding contributions.
It is worth mentioning that, academician Cao Yong has made a series of international advanced research in the field of OLED, organic / polymer solar cells and other areas at the same time, but also committed to the industrialization of organic optoelectronic materials and devices field applications, has trained a large group of highly innovative research-based top-notch talent and application of innovative talents. Now, let\’s look at one of the pioneers in the field of optoelectronic functional materials with domestic organic / polymer devices – Progress Cao Yong Fellow team in 2019. A bit rough statistics, Cao Yong academicians and collaborators in a total of 62 articles. These articles focus The organic / polymer solar cell , perovskite cell / light emitting FIELD . According to a search result Web of Sciences subject, the following articles are highly skilled in the cited papers (8 Pianci), hot art paper (2 Pianci). Advances portion
1 \”Adv Mater.\” 12% or more efficiency, non-ordered multi-scale fullerene small molecule organic solar cell |. FIELD the highly cited papers and hot papers
South China University of Technology Cao Yong Academy of Sciences , Professor Peng Xiaobin [123 ] team , the United South China Normal University, Professor Li Nian , Shanghai Jiaotong University Professor Liu Feng , Hong Kong city University Prof. Alex K.-Y. Jen et al. the two successful near infrared absorbing molecules bound to the non fullerene-based small molecule organic solar cell (NFSM-OSCs) in, to achieve a very high 12.08% power conversion efficiency (PCE) . This is achieved by mixing a solvent and an additive solvent vapor annealing, respectively for the main job and 6TIC ZnP-TBO adjustment of the evolution of the crystalline form. This will not only increase the degree of crystallinity and 6TIC ZnP-TBO blend, but may be formed multi-scale topography, charge mobility and charge enhancing extraction. By simultaneously reducing the effective charge delocalization non-filled composite. The results showed significantly improved device performance is the fill factor and short-circuit current. These resulted in a very substantial PCE, which is by far, NFSM-OSCs and all the small molecule two yuan highest reported solar cell. Related research \”Over 12% Effciency Nonfullerene All-Small-Molecule Organic Solar Cells with Sequentially Evolved Multilength Scale Morphologies\” as the subject, published in Adv. on Mater. .
2 \”.. Energy Environ Sci\” all polymer solar cell green common solvent to enhance the power conversion efficiency of 11% | highly skilled in the cited papers Organic advances in photovoltaic technology has been closely associated with a deep understanding of the bulk heterojunction (a BHJ) microstructure morphology, which is usually controlled by the coating formulation based on a single solvent or mixture of solvents. Full polymer solar cells (all-polymer solar cells, all-PSCs) relatively slow progress, mainly because of its complex shape BHJ difficult to master and the processing of the entanglement of polymer chains, which generally limits the performance of 8-10%. In this work,
South China University of Technology Cao Yong academicians , Professor should Lei , Professor Huang Fei United Erlangen – Nuremberg University Professor Li Ning Et al demonstrated green cyclopentyl methyl ether solvent system to operate based BHJ morphology, all-PSCs performance to be further developed by using a reference value of 11%. superior ink formulation in four different general applicability on the all-polymer solar cells have been successfully validated, showing great promise The all-PSCs into industrial production and commercialization of . Related research \”A generic green solvent concept boosting the power conversion efficiency of all-polymer solar cells to 11%\” as the title, published in Energy Environ. Sci. on. .
3 \” Joule \” single junction organic solar cell energy conversion efficiency of a new record to break 15% | highly skilled in the cited papers and hot papers the organic solar cell is a solar energy into electrical energy new electronic devices, the main parameters evaluated its performance is the energy conversion efficiency. High-efficiency organic solar cells is still the primary objective of the present study is the key to the industrialization of its implementation.
Central South University, Prof. Zou Ping TF The electron acceptor unit Benzotriazole incorporated central core of non-fullerene receptor fused ring to form a DAD fused ring structure, they instead benzotriazole fused ring center having an electron-deficient cells benzothiadiazole high mobility by introducing, with thiophene substituted fused ring thiophene-terminus to regulate the electron mobility of the target molecule and further enhance and broaden the absorption spectrum of the material. The thus obtained non-Y6 receptor fullerene having strong absorption and a narrower band gap (1.33 eV) and excellent electron mobility, a 15% energy conversion efficiency of single junction break the organic solar cell device was prepared , as reported single-junction organic solar cell efficiency is the highest in the world . The corresponding author for the paper, Professor Department of Chemistry, Zou Ping, Central South University. Further comprising collaborators Institute of Chemistry LI Yong-Fang Academy of Sciences team (forward Preparation and characterization of devices), South China University of Technology Cao Yong Academy of Sciences and [ 123] Professor Ye Li Xuan team (preparation and Characterization of reverse device) , Chinese University of Hong Kong Hui Road, (film shape appearance test) and Laval University Mario Leclerc Professor (molecular calculated) and the like. Research on January 17, 2019 in Cell Press\’s energy flagship journals published \”joule\” (Joule), entitled: Single-Junction Organic Solar Cell with over 15% Efficiency Using Fused-Ring Acceptor with Electron-Deficient Core . . 4 \”. Adv Mater\” synergism dual interface power efficiency of solar cells the perovskite CsPbI2Br | highly skilled in the cited papers
South China University of Technology [123 ]
Cao Yong academicians Professor Ye Xuan Li and Associate Professor Xue Qifan team by application of amino-functional polymer (PN4N) as a hole transporting polymer containing no cathode interface layer, and dopant (PDCBT) as an anode interfacial layer, the excellent light stability of the solar-inorganic hybrid perovskite halide prepared battery (PVSC). Researchers first interface dipole is formed to reduce the work function at the cathode at the interface of SnO2, and having a deeper HOMO level PDCBT provides a better matching of energy level at the anode, resulting in PVSC open-circuit voltage (Voc) is significantly enhanced. Secondly, PN4N layer may also adjust the surface wettability and promote the growth of high-quality full-inorganic perovskite films. Theoretical and experimental results show that PN4N and can PDCBTIn with the perovskite crystal interacts strongly effectively passivate the surface of the electron trap states and to prevent light-induced CsPbI2Br halide film separation. Thus, the optimized CsPbI2Br PVSC exhibits reduced interface recombination efficiency, more than 16% efficiency, which is one of the most efficient of all the inorganic PVSC reported. bis interface CsPbI2Br PVSC modified at the equivalent continuous sun irradiation duration 400 hours, the efficiency decreased only by 10%, having excellent light stability. Related research \”Dual Interfacial Design for Efficient CsPbI2Br Perovskite Solar Cells with Improved Photostability\” as the subject, published in Adv. on Mater. 5. Complex modulation region \” Nat Commun
.\” Efficiency of more than 5% of the quasi-two-dimensional perovskite blue light emitting diode | high field cited papers In recent years, a perovskite Study of external quantum efficiency of the near infrared light emitting diodes, red, and green emission more than 20% and substantial progress has been made. However, the development of blue light-emitting diode perovskite emission remains a huge challenge, it hindered the further development based on full-color displays and white lighting perovskite-emitting material. In this case, South China University of Technology
Cao Yong Academy of Sciences , Professor Ye Xuan Li team First, by composition and size works by reducing the trap density and the photoluminescence quantum yield increased advantage, enhanced blue emission quasi-two-dimensional perovskite thin films. Secondly, it was found PEDOT: PSS / hybrid perovskite vertical non-uniform distribution of the film perovskite crystal. By adjusting the position of the composite strip, to activate most quasi-perovskite crystal 2D, thus proving a by far the most effective perovskite blue light emitting diode, the emission peak at 480 nm, the brightness of 3780 cd m -2 , the external quantum efficiency was 5.7% . Related researchStudy to \”Modulation of recombination zone position for quasi-two-dimensional blue perovskite light-emitting diodes with efficiency exceeding 5%\” as the title, published in Nat. Commun on. Morphology and vertical perovskite composite film region 4. FIG schematic modulation
tandem organic solar cell (OSC) is an enlarged photon inhibitory effective response range and the structure of the transmission loss and heat loss. In the past few years, a wide range of low energy-gap material having a long wavelength region of absorption capacity, after the development of batteries for attracted attention. However, the wide band gap material for the front cell having high short-circuit current density (JSC) and open circuit voltage (VOC) is small. In this work, South China University of Technology
Cao Yong academicians , Professor Huang Fei and Dr. Zhang Kai reported a new wide bandgap fluoro substituted fullerene non-small molecule receptor TfIF-4FIC, the optical band gap of 1.61 eV. When selecting PBDB-T-2F as a donor, the device can provide a very high VOC 0.98 V, 17.6 mA cm-2 and JSC high power conversion efficiency of 13.1%. In such a wide band gap, which is the best performing receptors. More importantly, this combination of energy loss is 0.63 eV. These features ensure PBDB-T-2F: TfIF-4FIC OSC is ideal for manufacturing in series. When PBDB-T-2F: TfIF-4FIC and PTB7-Th: PCDTBT: when IEICO-4F tandem solar cell constructed as the front and rear of the battery cell, PCE obtained was 15%, which is by far the best results have been reported, one in the field of organic solar cells. Related research \”15% Efficiency Tandem Organic Solar Cell Based on a Novel Highly Efficient Wide-Bandgap Nonfullerene Acceptor with Low Energy Loss\” is the subject, published in Adv. Energy Mater. On . 7. Efficient non-fullerene-based polymer solar cells \”ACS Energy Lett.\” Carrier generation with double channels and low non-radiative recombination losses decline characteristics | high skilled in the cited papers
The effective charge generating It is a prerequisite for high power conversion efficiency (PCE) in the organic / polymer solar cell (OSC / PSC), which relates to the hole transfer between the electron transfer induced by photoexcitation of time and / or donor / acceptor interface . Both a high yield process typically need to be charged between the donor and acceptor sufficient energy to compensate for charge separation, extraction and rapid transport to collect charge, and the need for significant absorption maximum is complementary to the degree of access to photons. Here, South China University of Technology
Cao Yong Academy of Sciences , Professor Wu Hongbin , Prof. Ho Chi was [123 ] , jointly Xi\’an Modern Chemistry Research Institute climax researcher , South University of Technology Professor Liang Ye demonstrated an efficient PSC, which has efficient mixing a polymeric bifocal current donor and two narrow-bandgap non-fullerene production pathway formed receptors, having a PSC of 13.0% in a single junction device having a structure (authentication 12.5%) excellent PCE authentication . Device these material systems exhibit non-radiative recombination losses of about 0.22-0.24 V, to achieve this is by far the OSCOne minimum, comparable to single crystal silicon solar cell based perovskite or metal halides. This study highlights, with high yield and greatly reduce the loss of electric double voltage generating pathways for further improving the OSC PCE is essential. Research to \”High-Performance Fullerene-Free Polymer Solar Cells Featuring Efficient Photocurrent Generation from Dual Pathways and Low Nonradiative Recombination Loss\” as the subject, published in ACS Energy Lett. on. 8. \”.. Adv Energy Mater\” quasi-layer structure organic solar cell efficiency | high skilled in the cited papers The organic solar cell comprising a flexible because, source materials and a wide roll to roll printing, etc., to obtain academia and attention and a high degree of industry attention. In recent years, with the development of non-fullerene acceptor, organic photoelectric conversion efficiency of solar cells has made a breakthrough. However, the reported efficiency of organic solar cells, mostly based on the bulk heterojunction (a BHJ) structure, i.e. the electron donor material and electron acceptor material blended by a certain percentage. Its photoelectric conversion efficiency largely depends on the morphology of the active layer. Morphology and regulation of the active layer is a complex process that requires a series of integrated optimization / acceptor ratio, solvent, additives, thermal annealing, solvent annealing. With the increase of the area of the device, the regulation of the morphology becomes more challenging. This gives developers a large area of organic solar cells is a big challenge. In view of this, South China University of Technology Cao Yong academicians , Professor Huang Fei and Dr. Zhang Kai deposition by layering method were the donor material and the acceptor material are sequentially deposited by solution processing, was highly successful quasi double (bilayer) solar cell structure and large-area organic device. theyFirst fullerene PCBM system PffBT4T-2OD and to donor / acceptor material research. The results showed that, Bilayer devices exhibit considerable BHJ photovoltaic device performance, but Bilayer device stability improvement. Under continuous light conditions tested, which T80 life of 650 hours (FIG). This is because the bilayer structure, the donor / acceptor phase separation structure further derivatized suppressed; the other hand, the donor material is acting as a UV filter layer in the device, effectively avoiding the relatively stable difference acceptor material degradation by ultraviolet light. More importantly, the performance of small photovoltaic devices Bilayer dependence on processing conditions, processing was elected non-halogen solvent such as xylene, Bilayer efficiency of the device (8.9%) was significantly higher than the efficiency of the device BHJ (4.1%). Then, they select a non-fullerene system of PM6 and IT-4F to / acceptor material, using xylene as a solvent, to obtain the same efficiency as high as 12.9% of the device. And, by a doctor blade method to obtain a further large Bilayer device efficiency of 11.4% (1 cm2), which is one of the best properties of large area photovoltaic devices knife. research to \”Processing via High-Performance Large-Area Organic Solar Cells Enabled by Sequential Bilayer Nonhalogenated Solvents\” as the subject, published in Adv. Energy Mater. on. The full text link: DOI: 10.1002 / aenm.201802832.