Charge density dependent mobility of organic hole-transporters and mesoporous TiO₂ determined by transient mobility spectroscopy: implications to dye-sensitized and organic solar cells.
Adv Mater 25:23 (2013) 3227-3233
Abstract:
Transient mobility spectroscopy (TMS) is presented as a new tool to probe the charge carrier mobility of commonly employed organic and inorganic semiconductors over the relevant range of charge densities. The charge density dependence of the mobility of semiconductors used in hybrid and organic photovoltaics gives new insights into charge transport phenomena in solid state dye sensitized solar cells.Charge density dependent mobility of organic hole-transporters and mesoporous TiO2 determined by transient mobility spectroscopy: Implications to dye-sensitized and organic solar cells
Advanced Materials 25:23 (2013) 3227-3233
Abstract:
Transient mobility spectroscopy (TMS) is presented as a new tool to probe the charge carrier mobility of commonly employed organic and inorganic semiconductors over the relevant range of charge densities. The charge density dependence of the mobility of semiconductors used in hybrid and organic photovoltaics gives new insights into charge transport phenomena in solid state dye sensitized solar cells. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.Low-temperature processed meso-superstructured to thin-film perovskite solar cells
Energy and Environmental Science 6:6 (2013) 1739-1743
Abstract:
We have reduced the processing temperature of the bulk absorber layer in CH3NH3PbI3-xClx perovskite solar cells from 500 to <150 °C and achieved power conversion efficiencies up to 12.3%. Remarkably, we find that devices with planar thin-film architecture, where the ambipolar perovskite transports both holes and electrons, convert the absorbed photons into collected charge with close to 100% efficiency. © 2013 The Royal Society of Chemistry.Effect of polymer morphology on p3HT-based solid-state dye sensitized solar cells: An ultrafast spectroscopic investigation
Optics Express 21:103 (2013) A469-A474
Abstract:
Solid-state dye sensitized solar cell devices are fabricated with poly(3-hexylthiophene) (P3HT) as the hole transporting layer. Upon annealing treatment we obtained .70% increase in the device efficiency compared to un-annealed devices. Our investigation, by means of ultrafast transient absorption spectroscopic characterization, correlates the increased device performances to a more efficient hole-transfer at the dye/polymer interface in the thermally treated P3HT. © 2013 Optical Society of America.Solution processed zinc oxide nanopyramid/silver nanowire transparent network films with highly tunable light scattering properties.
Nanoscale 5:10 (2013) 4400-4403