On the anodic deposition of poly-L-lysine on indium tin oxide

•We deposited Poly-L-lysine (PLL) onto indium tin oxide (ITO) under a positive applied potential.•We characterized the deposition via Electrochemical Quartz Crystal Microgravimetry (EQCM-D).•The deposition achieves a constant, continual rate after several minutes.•ITO appears to inhibit water electrolysis sufficiently well to allow steady deposition.•This result confirms previous reports on ITO and starkly differs with our own measurements on Pt.