Assertion: solar cell's structure | /r/AtLocation | . 13
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text: Similarly, by applying different techniques, like post treatment of photoanode, optimizing the thickness of the nc-TiO 2 layer, and the antireflective filming, Grätzel group reported η = 11.3%  for the device containing the dyes C101 and η = 12.3%  for Z991 dye-based DSSCs (molecular structure shown in Fig. 13).