@article { ISI:000301235200031,
	title = {Band edge modulated conjugated polymers for oxidation prevention},
	journal = {Physical Chemistry Chemical Physics},
	volume = {14},
	number = {13},
	year = {2012},
	month = {FEB},
	pages = {4577-4583},
	publisher = {ROYAL SOC CHEMISTRY},
	type = {Article},
	address = {THOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLAND},
	abstract = {<p>The impact of electron transfer (ET) from a series of band edge modulated polymers to atmospheric oxygen is examined in connection with substrate oxidation prevention. Polymers with the highest occupied molecular orbital (HOMO) energy level below and above the oxygen energy level were tested and the former showed better efficiency. Furthermore, the oxidation prevention efficiency of a polymer with lower HOMO increased by two orders of magnitude, when the pores on the film were filled with spherical molecules, [6,6]-phenyl-C61-butyric acid methyl ester. We found that the polymer surface hydrophobicity has little or no influence on oxidation prevention. It is interesting to note that a polymer with a hole mobility of 8 x 10(-10) cm(2) V-1 s(-1) showed a two-fold increase in oxidation prevention efficiency compared to a polymer with a hole mobility of 6 x 10(-5) cm(2) V-1 s(-1). Over all, from the concerted approach, we conclude that a polymer devoid of pores with the HOMO energy level below oxygen and low charge carrier mobility is a suitable candidate for prevention of substrate oxidation/corrosion.</p>},
	issn = {1463-9076},
	doi = {10.1039/c2cp23544g},
	author = {Mahale, Rajashree Y. and Arulkashmir, Arulraj and Dutta, Kingshuk and Krishnamoorthy, Kothandam}
}
@article { ISI:000379306400014,
	title = {Band edge modulated polymer layer to decrease back electron transfer and increase efficiency in sensitized solar cells},
	journal = {Advanced Energy Materials},
	volume = {6},
	number = {9},
	year = {2016},
	month = {MAY},
	pages = {1502334},
	publisher = {WILEY-V C H VERLAG GMBH},
	address = {POSTFACH 101161, 69451 WEINHEIM, GERMANY},
	abstract = {<p>Recombination of charges residing in the TiO2 and redox electrolyte is one of the factors affecting the efficiency of dye sensitized solar cells (DSSCs). To circumvent this recombination, inorganic oxide barrier layers and organic silanes have been coated on TiO2/dyes. Due to the insulating nature of these layers, the efficiency increase is not very impressive. Conducting polymers with different band edges are used to suppress the charge recombination. Amongst the four polymers that are used as barrier layers, a polymer with a highest occupied molecular orbital energy at -5.8 eV and lowest unoccupied molecular orbital at -3.1 eV is found to increase the electron life time at TiO2 and decrease the charge recombination. The electron life time is found to be 88 ms. In addition to the long electron life time, the recombination resistance of this polymer is also high (91 Omega). This resistance is 18\% higher than that measured for DSSCs without polymer barrier layer. These factors impact the efficiency of DSSCs. DSSCs fabricated with this polymer as barrier layer exhibit an efficiency of 9.2\%, which is 22\% higher than that of DSSCs without polymer barrier layer.</p>},
	issn = {1614-6832},
	doi = {10.1002/aenm.201502334},
	author = {Arulkashmir, Arulraj and Sudhakar, Vediappan and Krishnamoorthy, Kothandam}
}
