Electronic Properties of Meso-Superstructured and Planar Organometal Halide Perovskite Films: Charge Trapping, Photodoping, and Carrier Mobility
- 30 June 2014
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Nano
- Vol. 8 (7), 7147-7155
- https://doi.org/10.1021/nn502115k
Abstract
Solution-processed organometal trihalide perovskite solar cells are attracting increasing interest, leading to high performances over 15% in thin film architectures. Here, we probe the presence of sub gap states in both solid and mesosuperstructured perovskite films and determine that they strongly influence the photoconductivity response and splitting of the quasi-Fermi levels in films and solar cells. We find that while the planar perovskite films are superior to the mesosuperstructured films in terms of charge carrier mobility (in excess of 20 cm(2) V-1 s(-1)) and emissivity, the planar heterojunction solar cells are limited in photovoltage by the presence of sub gap states and low intrinsic doping densities.This publication has 39 references indexed in Scilit:
- Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide PerovskitesScience, 2012
- Lead Iodide Perovskite Sensitized All-Solid-State Submicron Thin Film Mesoscopic Solar Cell with Efficiency Exceeding 9%Scientific Reports, 2012
- Oxide Semiconductor Thin‐Film Transistors: A Review of Recent AdvancesAdvanced Materials, 2012
- Electron Mobility and Injection Dynamics in Mesoporous ZnO, SnO2, and TiO2 Films Used in Dye-Sensitized Solar CellsACS Nano, 2011
- Measurement of Charge‐Density Dependence of Carrier Mobility in an Organic Semiconductor BlendAdvanced Functional Materials, 2010
- Electron Transport and Recombination in Dye-Sensitized Mesoporous TiO2 Probed by Photoinduced Charge-Conductivity Modulation Spectroscopy with Monte Carlo ModelingJournal of the American Chemical Society, 2008
- Electron and Hole Transport through Mesoporous TiO2 Infiltrated with Spiro‐MeOTADAdvanced Materials, 2007
- Comparative study on the excitons in lead-halide-based perovskite-type crystals CH3NH3PbBr3 CH3NH3PbI3Solid State Communications, 2003
- An improved experimental determination of external photoluminescence quantum efficiencyAdvanced Materials, 1997
- Low‐Temperature Surface Passivation of Silicon for Solar CellsJournal of the Electrochemical Society, 1989