01665nas a2200217   4500008004100000022001400041245011800055210006900173260011000242300001200352490000700364520079600371100002501167700002101192700001701213700002501230700001801255700002701273700002201300856012501322       2012                        eng d  a0959-942800aTuning spectral properties of phenothiazine based donor-pi-acceptor dyes for efficient dye-sensitized solar cells0 aTuning spectral properties of phenothiazine based donorpiaccepto  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcNOV  a889-8940 v223 a<p>Two novel metal-free organic donor-pi-acceptor dyes were synthesized using electron-rich 10-butyl-(2-methylthio)-10H-phenothiazine as a donor and cyanoacrylic acid as an acceptor. The spectral response of the dye was tuned by introducing a vinylene thiophene pi-bridge. Obtained optical and electrochemical properties of the dyes seemed to be promising in terms of employing them as light harvesters in dye-sensitized solar cells (DSCs). The efficiencies of the devices under standard AM 1.5G (100 mW cm(-2)) conditions reached 7.3% with volatile electrolyte. The differences in the photovoltaic parameters of these DSCs were explained by comparing the results of electrochemical impedance spectroscopy (EIS) measurements and transient photovoltage and photocurrent decay experiments.</p>1 aMarszalek, Magdalena1 aNagane, Satyawan1 aIchake, Amol1 aHumphry-Baker, Robin1 aPaul, Vincent1 aZakeeruddin, Shaik, M.1 aGraetzel, Michael  uhttps://library.ncl.res.in/content/tuning-spectral-properties-phenothiazine-based-donor-pi-acceptor-dyes-efficient-dye-0