Facile Flame-processed Electron Transport/Selective Layers for Organic-Inorganic Hybrid Solar Cells
발표자
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초록
내용
Mesoporous electron transport/selective layers (ETLs) are broadly used as interlayers in various organic-inorganic hybrid solar cells. The state-of-the-art ETLs for these solar cells are fabricated by annealing a paste-coated fluorine-doped tin oxide (FTO) glass in a box furnace, where the paste is composed of polymeric binders and organic stabilizers with metal oxide nanoparticles (i.e. TiO2). Here, the use of flame is introduced for the high throughput and ultrafast thermal treatment of ETLs. Flame has a broad tunable temperature range and an intrinsic temperature field with a large gradient. Hence, flame treatment, when coupled with FTO glass cooling, could provide the desired temperature field for processing ETLs on FTO. Thus, the flame annealing of paste can be a promising approach for fabricating PSCs with enhanced charge transport performance. In addition, a sol-flame doping process to introduce Co dopant into ETLs is introduced for the high efficient perovskite solar cells.