A few days ago, Century New Energy Network reporter learned from the Changchun Institute of Applied Chemistry, Chinese Academy of Sciences that new research and development of new and efficient organic solar cells has made new progress. It is reported that Changchun Yinghua’s research on the important direction of the Knowledge Innovation Project of the Chinese Academy of Sciences “a new type of high-efficiency organic solar cell research†passed the acceptance by the experts organized by the Frontier Science and Education Bureau of the Chinese Academy of Sciences. The expert group believes that this project has made important progress in the design and synthesis of high-performance photovoltaic polymers, the synthesis of new receptors and interface materials, and the production of high-efficiency light-sensitive thin films and large-area device preparation technologies, laying the foundation for the construction of batch production lines.
Flexible and efficient organic solar battery module
According to experts from the Institute, the new type of high-performance organic solar cell has attracted wide attention due to its light weight, flexibility, and wet processability to facilitate large-area fabrication. Designing and synthesizing novel conjugated polymer materials and optimizing the morphology of the photosensitive layer are important ways to improve device performance. Small-area battery devices are typically prepared using a spin-on process, but this process cannot produce large-area battery modules and modules. Therefore, it is very necessary to develop a solution preparation process that is suitable for large-scale production.
The Changchun Institute of Chemical Technology of the Chinese Academy of Sciences and the Institute of Bioenergy and Process Research of the Chinese Academy of Sciences focused on the country’s major needs. Under the support of the Chinese Academy of Sciences’ important project of knowledge innovation, the “new and efficient organic solar cells†were jointly launched in May 2010. Project research.
After nearly four years of unremitting efforts, a variety of new polymer donor photovoltaic materials with strong and broad absorption and high hole mobility (up to 1.1×10-2cm2/V/s) have been synthesized. The energy conversion efficiency of a small area (0.04-0.1 cm2) photovoltaic device under simulated sunlight is up to 8.79%; a variety of fullerene derivatives with different functional groups and addition sites are designed and synthesized, and several polymers are designed and synthesized. Type, small molecule type and metal oxide type interface materials, and obtained applications in the device; break through the problem that the efficiency of the battery decreases rapidly when the size is enlarged, realizes the control of the battery size and the aspect ratio, and the photosensitiveness of the electronic ink and the device After further optimization of the post-treatment process, a single cell with a single block area of ​​10.2 cm2 and a conversion efficiency of 4.14% was obtained. The conversion efficiency of the battery module with an area of ​​46.9 cm2 thus obtained was 3.12% (effective after deducting the dead-zone area). The cell efficiency of 38.5 cm2 is 3.80%), paving the way for larger area module preparation.
The project applied for 16 Chinese invention patents, authorized 8 projects, published 106 papers on SCI income, and cultivated and established an excellent team with core competitiveness in this field, which ensured our hospital’s leading position in this field.
Zhao Huibin, deputy director of the Division of Science and Education of the Institute of Frontier Science and Education, An Lijia, director of Changchun Yinghua, Yang Xiaoniu, deputy director, and members of the project undertaking unit participated in the project acceptance meeting. Academician Cao Yu of South China University of Technology served as the head of the expert group. (Reported by Century New Energy Network reporter Zhang Sisi, Changchun)
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