Copolymer of bithiophene diazosulfide and dibenzothiophene (BDT) and application thereof
A technology of benzothiadiazole and copolymer, which is applied in the field of application, can solve the problem that the solubility of dithiophene benzothiadiazole-based polymers is not very good, and achieve a good effect of photoelectric conversion function
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[0045] The present invention uses the above-mentioned polymer as a working medium, and the method for preparing a polymer solar cell is: mix PBDT-DODTBT with an appropriate amount of C 60 and its derivatives or other substances that can be used as electron acceptors, add an appropriate amount of solvent to dissolve, prepare a layer of translucent film on ITO conductive glass by conventional spin coating or other methods, and then vacuum evaporated The metal electrode is vapor-deposited on the polymer to prepare a polymer solar cell device.
[0046] 5mg of PBDT-DODTBT with 10mg of C 60 Mix, add 0.25mL o-dichlorobenzene to dissolve, prepare a layer of about 70nm thick film on the conductive glass modified by PEDOT:PSS by spin coating at 2000rpm, and then use aluminum on the polymer by vacuum evaporation Prepare metal electrodes. Its device performance is as follows:
[0047] Short circuit current=8.96mA / cm 2 ; Open circuit voltage = 0.76V; Fill factor = 59%;
[0048] Simula...
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