We investigate an electron transport bilayer fabricated at <110 °C to form all low-temperature processed,thermally stable, efficient perovskite solar cells with negligible hysteresis. The components of the bil...We investigate an electron transport bilayer fabricated at <110 °C to form all low-temperature processed,thermally stable, efficient perovskite solar cells with negligible hysteresis. The components of the bilayer create a symbiosis that results in improved devices compared with either of the components being used in isolation. A sol-gel derived ZnO layer facilitates improved energy level alignment and enhanced charge carrier extraction and a [6,6]-phenyl-C_(61)-butyric acid methyl ester(PCBM) layer to reduce hysteresis and enhance perovskite thermal stability. The creation of a bilayer structure allows materials that are inherently unsuitable to be in contact with the perovskite active layer to be used in efficient devices through simple surface modification strategies.展开更多
基金the China Scholarship Council for financial support for PhD studiessupport through the EPSRC Centre for Doctoral Training in Plastic Electronics(EP/L016702/1)
文摘We investigate an electron transport bilayer fabricated at <110 °C to form all low-temperature processed,thermally stable, efficient perovskite solar cells with negligible hysteresis. The components of the bilayer create a symbiosis that results in improved devices compared with either of the components being used in isolation. A sol-gel derived ZnO layer facilitates improved energy level alignment and enhanced charge carrier extraction and a [6,6]-phenyl-C_(61)-butyric acid methyl ester(PCBM) layer to reduce hysteresis and enhance perovskite thermal stability. The creation of a bilayer structure allows materials that are inherently unsuitable to be in contact with the perovskite active layer to be used in efficient devices through simple surface modification strategies.
