2-thiophene-benzotriazole-based polymer materials and photovoltaic application thereof
A polymer material, benzotriazole technology, applied in the field of polydithiophene benzotriazole materials, can solve the problem of low efficiency
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[0031] Example 1: Preparation of polymer solar cell devices
[0032] 5mg of PCzDTBTz and 10mg of C 60 Mix, add 0.25mL o-dichlorobenzene to dissolve, prepare a 74nm thick film on the conductive glass modified by PEDOT:PSS by spin coating, and then prepare aluminum on the polymer by vacuum evaporation Metal electrode. The performance of the device is as follows:
[0033] Short circuit current = 5.33mA / cm 2 ; Open circuit voltage = 0.92V; Fill factor = 44%;
[0034] Simulated sunlight (A.M.1.5, 100mW / cm 2 ) Energy conversion efficiency = 2.2%.
Example Embodiment
[0035] Embodiment 2: Use PBDTDTBTz instead of PCzDTBTz as the working medium, and other conditions are the same as in embodiment 1. The performance of the device is as follows:
[0036] Short circuit current = 4.5mA / cm 2 ; Open circuit voltage = 0.61V; Fill factor = 62%;
[0037] Simulated sunlight (A.M.1.5, 100mW / cm 2 ) Energy conversion efficiency = 1.7%.
Example Embodiment
[0038] Embodiment 3: Use MOPPV-DTBTz or DOPPV-DTBTz instead of PCzDTBTz as the working medium, and other conditions are the same as in embodiment 1. The performance of the device is as follows:
[0039] MOPPV-DTBTz:
[0040] Short circuit current = 2.38mA / cm 2 ; Open circuit voltage = 0.5V; Fill factor = 31%;
[0041] Simulated sunlight (A.M.1.5, 100mW / cm 2 ) Energy conversion efficiency = 0.36%.
[0042] DOPPV-DTBTz:
[0043] Short circuit current = 2.22mA / cm 2 ; Open circuit voltage = 0.6V; Fill factor = 31%;
[0044] Simulated sunlight (A.M.1.5, 100mW / cm 2 ) Energy conversion efficiency = 0.4%.
[0045] The series of polybenzotriazole materials provided by the present invention have good processability, and have been proved to have good photoelectric conversion characteristics through preliminary attempts, and have broad application prospects as working media of polymer solar cells.
[0046] The preparation method of a series of polybenzotriazole derivative materials provided by the pr...
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