Hybrid UV-Ozone-Treated rGO-PEDOT:PSS as an Efficient Hole Transport Material in Inverted Planar Perovskite Solar Cells.

摘要: Inverted planar perovskite solar cells (PSCs), which are regarded as promising devices for new generation of photovoltaic systems, show many advantages, such low-temperature film formation, low-cost fabrication, and smaller hysteresis compared with those traditional n-i-p PSCs. As an important carrier transport layer in PSCs, the hole (HTL) considerably affects device performance. Therefore, HTL modification becomes one most critical issues improving performance In this paper, we report effective environmentally friendly UV-ozone treatment method to enhance hydrophilia reduced graphene oxide (rGO) its excellent electrical The treated rGO was applied doped poly(3,4-ethylenedioxythiophene) poly(styrene-sulfonate) (PEDOT:PSS) material Consequently, rGO/PEDOT:PSS-doped PSCs improved significantly, power conversion efficiency (PCE) 10.7%, Jsc 16.75 mA/cm2, Voc 0.87 V, FF 75%. PCE 27% higher than that pristine PEDOT:PSS HTL. This attributed surface morphology optimized mobility solution-processable rGO-modified PEDOT:PSS.