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Job brief
——Compared with three-dimensional halide perovskite semiconductor, two-dimensional ruddlesden Popper layered perovskite semiconductor has become a research hotspot of perovskite solar cells due to its improved moisture resistance, excellent optical and thermal stability, ultra-low self doping behavior and significantly reduced ion migration effect. The stability of two-dimensional layered perovskite comes from the protection of organic amine molecules on the surface, the effective regulation of perovskite tolerance factor in low dimension, and the interlayer interaction dominated by weak Vander Ed Ley and hydrogen bond between organic amine molecules. However, due to the weak hydrogen bond and van der Waals force, the stability of the layered perovskite framework is limited. At the same time, the weak interaction limits the self-assembly and cross layer charge transfer of the two-dimensional layered perovskite, thus affecting the film quality of the active perovskite layer and the separation and transfer characteristics of the photogenerated carriers. The study on the regulation of the interlayer interaction is expected to enhance the stability of the two-dimensional layered perovskite films and the photoelectric conversion efficiency of the two-dimensional layered perovskite solar cells.
Huang Wei, academician of Flexible Electronics Research Institute of Northwest University of technology, Chen Yonghua, Professor of Advanced Materials Research Institute of Nanjing University of technology and Zhang Lijun, Professor of National Key Laboratory of Integrated Optoelectronics / School of materials, Jilin University. Through the close combination of experimental synthesis, characterization and theoretical simulation, it is reported for the first time that an efficient and stable two-dimensional layered perovskite solar cell is constructed through the regulation of interlayer interaction. Through the innovative introduction of an organic amine containing sulfur atoms, the team realized the effective regulation of interlayer interaction. The two-dimensional layered perovskite film with strong out of plane preferential growth can achieve low defect state density and effective interlayer charge transfer, thus improving the photoelectric conversion efficiency of solar cells. At the same time, the stability of the two-dimensional layered perovskite solar cells is significantly improved by the enhanced intermolecular interaction. A perovskite solar cell with high efficiency of 18.06% and high stability has been constructed, which provides a new idea for further improving the performance and stability of the two-dimensional perovskite solar cell.
Through the introduction of organic amines containing S atoms, the interlayer interaction of two-dimensional layered perovskite semiconductors can be effectively controlled, and the stability of the materials can be improved, and the transmission of photo generated carriers between layers can be enhanced
Relevant research results were published in nature photonics 14, 154 (2020) on January 13, 2020 under the title of "efficient and stable rulesden – Popper perovskite solar cell with detailed interlayer molecular interaction". Ren Hui (Nanjing University of technology, master's degree), Yu Shidong (Jilin University, undergraduate) and Chao Lingfeng (Nanjing University of technology, master's degree) are the co first authors of the paper. Academician Huang Wei, Professor Chen Yonghua and Professor Zhang Lijun are the co authors of this paper.
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Brief introduction of main authors
Correspondence author
Huang Wei, academician of Chinese Academy of Sciences, foreign academician of Russian Academy of Sciences, academician of Asia Pacific Academy of material sciences, foreign academician of ASEAN Academy of engineering and technology, foreign academician of Pakistan Academy of Sciences. Professor, doctoral director, organic electronics, plastic electronics, printing electronics, bioelectronics and flexible electronics.
Academician Huang Wei is a special professor of "Changjiang Scholars", winner of National Science Fund for Distinguished Young Scholars, special expert of national high level talent plan, and chief scientist of "973" project. President of the Federation of engineering organizations in the Asia Pacific region (feiap), honorary doctor of Russian Academy of Sciences, honorary doctor of the University of Sheffield, member of the Royal Society of chemistry, member of the American Optical Society and member of the international optical engineering society. He has won the second prize of the National Natural Science Award twice, the first prize of the natural science award of the excellent achievement award of scientific research (Science and Technology) of colleges and universities three times, and the science and technology progress award of He Liang and he Li foundation, etc., and his achievements have been shortlisted as one of the "top ten scientific and technological progress of colleges and universities" in China.
Academician Huang Wei has made a lot of systematic and innovative research results in the fields of flexible electronics, especially organic electronics. As the first or corresponding author, he has worked in nature, science, nature materials, Nature Nanotechnology, nature photonics, nature chemistry, nature electronics, nature Communication and other international mainstream SCI academic journals published more than 760 research papers, with H factor of 131, and cited more than 80000 times by international peers. They are highly cited scholars in the field of materials science and chemistry in the world. More than 360 invention patents have been authorized in the United States, Singapore and China, and academic monographs such as organic electronics, biophotonics, organic thin film transistor material devices and applications, application of organic optoelectronic materials in biomedicine, OLED display technology have been published.
Corresponding author Chen Yonghua, professor and doctoral supervisor of Advanced Materials Research Institute of Nanjing University of technology. Candidates of national high level talent plan (2017).
Professor Chen Yonghua graduated from Inner Mongolia University with a bachelor's degree. In 2011, he received his Ph.D. from Changchun Institute of Applied Chemistry, Chinese Academy of Sciences. From 2011 to 2015, he successively worked in Wake Forest University and Case Western Reserve University as a postdoctoral researcher.
Professor Chen Yonghua has been focusing on the key scientific issues of organic and perovskite optoelectronic materials and devices for a long time. In recent years, he has published more than 90 papers in the field of organic and perovskite optoelectronic materials and devices, cited more than 3000 times, H factor 31. In the past five years, he has published more than 40 papers as the first / corresponding author, including NAT. Photonics (1), chem. SOC. Rev. (1), NAT. Commun. (1), chem (1), adv. mater. (4), light: SCI. & amp; appl. (1), nano lett. (1), angel. Chem. (1), etc., and has 8 Chinese patents and 1 American patent. He wrote the English monograph "organic semiconductor junction and its application in organic light emitting diodes" (Springer nature) and the monograph chapter "white OLED materials" in "Handbook of advanced lighting technology" (Springer nature). Presided over a number of national, provincial and ministerial fund projects.
Corresponding author Zhang Lijun, Professor of National Key Laboratory of Integrated Optoelectronics / School of materials, Jilin University, winner of national high level talent plan (2014), winner of excellent youth fund of the Foundation Committee (2017).
Professor Zhang Lijun graduated from Northeast Normal University with a bachelor's degree. In 2008, he obtained a doctor of science from Jilin University. From 2008 to 2014, he successively worked as a postdoctoral researcher and research assistant professor in Oak Ridge National Laboratory, National Renewable Energy Laboratory and Bohr School of University of Colorado.
For a long time, Professor Zhang Lijun took the optimization and improvement of physical properties of semiconductor optoelectronic materials as the goal, developed the material design method software with independent intellectual property rights by means of semiconductor simulation based on the first principle calculation, and carried out the research on the optimization design and energy band regulation of semiconductor optoelectronic materials.
So far, more than 120 SCI papers have been published, and all papers have been cited more than 5700 times, with H factor value of 42. Since he returned to China in 2014, he has published more than 50 papers in SCI journals such as NAT. Rev. Mater. (1), NAT. Photonics (1), NAT. Commun. (5), nano lett. / ACS Nano (5), adv. funct. Mater. (2), J. am. Chem. SOC. (5) as the first / corresponding author. He was awarded the "Youth Award of Computational Materials Science" (2018) by the computational materials branch of China Society of materials research and the first prize of Jilin Youth Science and Technology Award (2019). Served as the project leader of key R & D plan of the Ministry of science and technology, the reviewer of nano research journal "young star editor", nano select new journal associate editor of Wiley publishing group, Journal of semiconductor and China Optics, nature and other journals.
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Document Delivery
For details, please click the thesis link: https://www.nature.com/articles/s41566-019-0572-6
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