新型碳基复合材料的制备及其在钙钛矿太阳能电池中的应用
[Abstract]:Perovskite solar cell (Perovskite Solar Cells,PSCs), as a new third generation solar cell, has been widely concerned by researchers all over the world in recent years because of its high photoelectric conversion efficiency, simple fabrication process and wide source of raw materials. Traditional perovskite solar cells use metal thin films (Ag,Au and Pt) as electrodes for PSCs counter electrode materials, and need to add (HTM)., which is not stable hole transport material. These materials are expensive and do not meet PSCs's goal of facing large area and industrial production in the future. Carbon materials have stable chemical properties, low price, rich content, and have similar Fermi energy levels to Au, which is a good choice to replace HTM materials and noble metal electrodes. In this experiment, a new type of carbon composite was prepared by hydrothermal synthesis and used as the electrode material of PSCs. Firstly, In_ (2.77) S _ 4 was prepared by hydrothermal synthesis, and In_ (2.77) S _ 4 / Cb. was prepared by adding carbon black, conducting carbon and carbon nanotubes. In_ (2.77) S_4/Cc and In_ (2.77) S_4/CNTs were used to assemble the electrode materials, and the J-V test results showed that In_ (2.77) S_4/CNTs was the most effective. On this basis, In_ (2.77) S _ 4 was doped with different proportion of CNTs to prepare the opposite electrode material. It was found that when the mass ratio of In_ (2.77) S _ 4 to CNTs was 1:4, the optoelectronic properties of PSCs were the best. The performance parameters of In_ (2.77) S_4/CNTs composite and CNTs applied in PSCs are compared and analyzed. The results show that the counter electrode based on In2 77S4/CNTs can effectively improve the performance of the battery, and its photoelectric conversion efficiency (PCE) reaches 5.92%. The stability of the PSCs cell is 250 h in air atmosphere, room light and 30-55% humidity. Secondly, the concave soil / Cc composites were prepared by hydrothermal synthesis and characterized. Concave soil / Cc and Cc were used as cathode materials to prepare opposite electrode paste. The J-V test results showed that concave soil / Cc showed good electrical conductivity and catalytic property to electrode material. The optoelectronic conversion efficiency of PSCs, was 7.17% when the ratio of attapulgite to Cc was 1:4 on the PCE with different mass ratio of attapulgite / Cc. Finally, the properties of PSCs with two different configurations (diisopropylidene diacetylacetone titanium (Ticac) compact layer and ZrO_2 electron transport layer) were investigated on the basis of carbon material pair electrode. After adding porous layer to Ticac dense layer, the performance of PSCs is improved. It is found that PSCs with TiO_2-ZrO_2 structure has better optoelectronic performance by detecting the performance parameters of ZrO_2 configuration PSCs.
【学位授予单位】:大连海事大学
【学位级别】:硕士
【学位授予年份】:2017
【分类号】:TM914.4
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