不同生物质来源的多孔碳复合碳电极在钙钛矿太阳能电池中的应用

Application of porous carbon composite carbon electrodes from different biomass sources in perovskite solar cells

通过将生物质在惰性气体保护下高温热解/活化制备多孔碳材料,具有成本低,工艺简单等优点,并且是一种废物利用,减少环境污染的有效途径。将三种不同生物质通过高温热解/活化制备了多孔碳材料,将其与市售导电碳浆复合制成碳浆料后应用于钙钛矿太阳能电池(PSCs)背电极,研究了不同生物质多孔碳材料的形貌、结构和比表面积等对器件光电性能的影响。结果表明,基于不同生物质多孔碳材料的PSCs的光电性能取决于生物质多孔碳材料的形貌、结晶度、比表面积和形态以及钙钛矿/碳电极的界面接触。基于生物质多孔碳的复合碳电极结合研磨工艺制备的碳基PSCs,由于具有良好的界面性能获得最高10.18%的光电转换效率(PCE)(未复合生物质碳的PSCs的PCE为6.39%),室温下保存60天后,仍保留了初始PCE的96%。

The preparation of porous carbon materials by high-temperature pyrolysis/activation of biomass under the protection of inert gas has the advantages of low cost,simple process,etc.,and is an effective way to use waste and reduce environmental pollution.In this study,three different biomass materials were prepared by high-temperature pyrolysis/activation to prepare porous carbon materials,which were combined with commercially conductive carbon paste to make composite carbon paste and applied to the counter electrodes of perovskite solar cells(PSCs).The morphology,structure and specific surface area of different biomass porous carbon materials affect the photoelectric performance of the device.The results show that the photoelectric performance of PSCs based on different biomass porous carbon materials depends on the morphology,crystallinity,specific surface area and morphology of the biomass porous carbon materials and the interface contact between the perovskite/carbon electrode.The carbon-based PSCs prepared by the composite carbon electrode based on biomass porous carbon combined with the grinding process can obtain the highest photoelectric conversion efficiency(PCE)of 10.18%due to its good interface performance(the PCE of the PSCs without composite biomass carbon is 6.39%).After the best device is stored in air conditions for 60 days,96%of the initial PCE was still retained.