Charge transport in nanoparticular thin films of zinc oxide and aluminum-doped zinc oxide. Issue 7 (27th January 2015)

• Record Type: Journal Article
• Authors: Lenz, Thomas; Richter, Moses; Matt, Gebhard J.; Luechinger, Norman A.; Halim, Samuel C.; Heiss, Wolfgang; Brabec, Christoph J.
• Is Part Of: Journal of materials chemistry. Volume 3:Issue 7(2015)
• Page Start: 1468
• Page End: 1472
• Publication Date: 2015-01-27
• Subjects: Materials -- Periodicals; Chemistry, Analytic -- Periodicals; Optical materials -- Research -- Periodicals; Electronics -- Materials -- Research -- Periodicals; 543.0284
• DOI: 10.1039/c4tc01969e
• Languages: English
• ISSNs: 2050-7526

Abstract

Abstract : In this work, we report on the electrical characterization of nanoparticular thin films of zinc oxide and aluminum-doped ZnO. Temperature-dependent current–voltage measurements revealed that charge transport is well described by the Poole–Frenkel model. Abstract : In this work, we report on the electrical characterization of nanoparticular thin films of zinc oxide (ZnO) and aluminum-doped ZnO (AZO). Temperature-dependent current–voltage measurements revealed that charge transport for both, ZnO and AZO, is well described by the Poole–Frenkel model and excellent agreement between the experimental data and the theoretical predictions is demonstrated. For the first time it is shown that the nature of the charge-transport is not affected by the doping of the nanoparticles and it is proposed that the Poole–Frenkel effect is an intrinsic and universally limiting mechanism for the charge transport in nanoparticular thin films with defect states within the bandgap.