At 204, the method includes preparing a solution including a solvent and a conductive polymer. With reference to FIGS. 3B-3C, a conductive polymer 310 may be added to a solvent 312 (or the solvent 312 may be added to the conductive polymer 310) to form a solution 314. The conductive polymer 310 may be a solid prior to being dissolved in the solvent 312. The conductive polymer 310 may be present in the solution 314 at greater than or equal to about 0.1 weight percent, greater than or equal to about 0.5 weight percent, optionally greater than or equal to about 1 weight percent, optionally greater than or equal to about 2 weight percent, optionally greater than or equal to about 5 weight percent, optionally greater than or equal to about 10 weight percent, optionally greater than or equal to about 15 weight percent, optionally greater than or equal to about 20 weight percent, or optionally greater than or equal to about 25 weight percent. The conductive polymer 310 may be present in the solution 314 at less than or equal to about 30 weight percent, optionally less than or equal to about 25 weight percent, optionally less than or equal to about 20 weight percent, optionally less than or equal to about 15 weight percent, optionally less than or equal to about 10 weight percent, optionally less than or equal to about 5 weight percent, optionally less than or equal to about 2 weight percent, or optionally less than or equal to about 1 weight percent. In certain aspects, the conductive polymer 310 is present in the solution 314 at greater than or equal to about 0.1 weight percent to less than or equal to about 30 weight percent, or optionally greater than or equal to about 0.5 weight percent to less than or equal to about 10 weight percent.