Distinct Exciton Dissociation Behavior of Organolead Trihalide Perovskite and Excitonic Semiconductors Studied in the Same System
- 15 January 2015
- Vol. 11 (18), 2164-2169
- https://doi.org/10.1002/smll.201402905
Abstract
The nonexcitonic character for organometal trihalide perovskites is demonstrated by examining the field-dependent exciton dissociation behavior. It is found that photogenerated excitons can be effectively dissociated into free charges inside perovskite without the assistance of charge extraction layer or external field, which is a stark contrast to the charge-separation behavior in excitonic materials in the same photovoltaic operation system.Keywords
Funding Information
- National Science Foundation (ECCS‐1201384, ECCS‐1252623)
- U.S. Department of Energy (DE‐EE0006709)
- Defense Threat Reduction Agency (HDTRA1–14–1–0030)
This publication has 36 references indexed in Scilit:
- Photoinduced Giant Dielectric Constant in Lead Halide Perovskite Solar CellsThe Journal of Physical Chemistry Letters, 2014
- Efficient, high yield perovskite photovoltaic devices grown by interdiffusion of solution-processed precursor stacking layersEnergy & Environmental Science, 2014
- The origin of high efficiency in low-temperature solution-processable bilayer organometal halide hybrid solar cellsEnergy & Environmental Science, 2013
- CH3NH3PbI3 Perovskite/Fullerene Planar‐Heterojunction Hybrid Solar CellsAdvanced Materials, 2013
- Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide PerovskitesScience, 2012
- Mesoscopic CH3NH3PbI3/TiO2Heterojunction Solar CellsJournal of the American Chemical Society, 2012
- Thermodynamic efficiency limit of excitonic solar cellsPhysical Review B, 2011
- Comparative study on the excitons in lead-halide-based perovskite-type crystals CH3NH3PbBr3 CH3NH3PbI3Solid State Communications, 2003
- Optical properties of PbI-based perovskite structuresJournal of Luminescence, 1994
- Dynamic disorder in methylammoniumtrihalogenoplumbates (II) observed by millimeter-wave spectroscopyThe Journal of Chemical Physics, 1987