EN02.12.04 : High Efficiency Perovskite Solar Cells with a High Open-Circuit Voltage Based on Perovskite-Friendly Carbon Electrode

5:00 PM–7:00 PM Apr 5, 2018 (America - Denver)

PCC North, 300 Level, Exhibit Hall C-E

Qianqian Chu1

1, Xi'an Jiaotong University, Xi'an, , China

Hybrid organic-inorganic solar cells, utilizing the organometal halide perovskites materials as the light harvesters have attracted much attention due to their low-cost solution process ability and high efficiency. the HTM-free PSCs with affordable and easily prepared electrode, especially the low-temperature paintable carbon-based PSCs,For the simplest low-temperature paintable carbon-based perovskite solar cell (PSC), the commercial carbon paste utilized to prepare carbon electrode damages the well-fabricated perovskite films, resulting in a bad photoelectric property. Herein, we successfully prepared a low temperature perovskite-friendly carbon paste for PSCs with propylene glycol monomethyl ether acetate (PGMEA) as a solvent, which has showing shown a good electrical conductivity. With the exclusive carbon paste, the perovskite film keeps a dense and uniform morphology, leading to the a champion power conversion efficiency is of up to 12.7% and a champion open-circuit voltage is of up to 1.07 V which is the highest value for carbon-based PSCs with MAPbI3 as light harvester. Furthermore, the long-time stability test shows that the solar cells with the as-prepared CE carbon electrode retain more than 85% of its initial power conversion efficiency after 960 h.