[Background introduction]
The advantages of small molecule materials, such as the clear molecular structure, easy purification and morphological stability, have aroused people's great concern. Their application in the manufacture of highly efficient solution-treated organic solar cells has great potential.
[Introduction]
Recently, Prof. Zhang Fujun from Beijing Jiaotong University, Prof. Zhang Jian from Guilin University of Electronic Science and Technology and Prof. Liu Xinfeng (Common Communications) from the National Nano Center have optimized the binary SMSCs and selected the small molecule DIB-SQ as a three-component SMSC. The third component. Trifunctional SMSCs with 6 wt% DIB-SQ in the donor gave 10.3% power conversion efficiency. Since the short current density (JSC) significantly increased to 15.44 mA/cm2, the fill factor (FF) increased to 73.8%, and the PCE reached about 10%. The main contribution of DIB-SQ can be summarized as enhanced photon collection and optimized phase separation over a long wavelength range. The method of selecting light using cut-off filter was reported, and the dynamic process of carrier transport in the ternary system was studied. The relevant content was published in the title “Ternary Small Molecule Solar Cells Exhibiting Power Conversion Efficiency 10.3%â€. On Nano Energy. The authors of this paper are Dr. Zhang Miao and Dr. Wang Jian.
ã€to sum up】
As we all know, morphological optimization is a great challenge for obtaining efficient SMSCs. The results of this study increase the power conversion efficiency of small molecule solar cells (SMSCs) based on BTR to donors to 10.3%, demonstrating that the ternary strategy is an effective method for improving the performance of small molecule solar cells (SMSCs).
Formic Acid, commonly known as Formic ACID, is the simplest carboxylic acid. Colorless and irritating liquid. Weak electrolyte, melting point 8.6 ℃, boiling point 100.8 ℃. It is very acidic and corrosive and can stimulate the skin to foam. It is found in the secretions of bees, certain ants and caterpillars. Organic chemical raw material, also used as disinfectant and preservative
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