Compensation effect of Sn in PbI2 polycrystalline layers

Tin has been introduced into polycrystalline lead iodide during solution growth of thin films. Electrical characterization (current vs. voltage measurements as a function of the temperature and thermally stimulated current experiments) demonstrates that tin introduces a deep donor level in the PbI2 bandgap and compensates the native acceptor defects of lead iodide. (© 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)