Elucidating the Impact of Thin Film Texture on Charge Transport and Collection in Perovskite Solar Cells
Open Access
- 26 March 2018
- journal article
- research article
- Published by American Chemical Society (ACS) in ACS Omega
- Vol. 3 (3), 3522-3529
- https://doi.org/10.1021/acsomega.8b00026
Abstract
Organic–inorganic halide perovskites have emerged as one of the most promising materials for photovoltaic applications. Because of the polycrystalline nature of perovskite thin films, it is crucial to investigate the impact of microstructures on device performance. In this study, we employ ramp-annealing to tailor the texture of perovskite thin films via controlling the nucleation of perovskite grains. Electrochemical impedance spectroscopy studies further suggest that the thin film texture impacts not only the charge collection at the contact but also the carrier transport in the bulk perovskite layer. The combination of the two effects leads to enhanced performance in devices constructed of preferentially oriented perovskite thin films.Keywords
Funding Information
- Michigan State University
This publication has 57 references indexed in Scilit:
- Perovskite solar cells with CuSCN hole extraction layers yield stabilized efficiencies greater than 20%Science, 2017
- Colloidally prepared La-doped BaSnO 3 electrodes for efficient, photostable perovskite solar cellsScience, 2017
- A vacuum flash-assisted solution process for high-efficiency large-area perovskite solar cellsScience, 2016
- Determination of the exciton binding energy and effective masses for methylammonium and formamidinium lead tri-halide perovskite semiconductorsEnergy & Environmental Science, 2016
- Direct measurement of the exciton binding energy and effective masses for charge carriers in organic–inorganic tri-halide perovskitesNature Physics, 2015
- Excitons versus free charges in organo-lead tri-halide perovskitesNature Communications, 2014
- The origin of high efficiency in low-temperature solution-processable bilayer organometal halide hybrid solar cellsEnergy & Environmental Science, 2013
- Efficient organometal trihalide perovskite planar-heterojunction solar cells on flexible polymer substratesNature Communications, 2013
- Perovskites: The Emergence of a New Era for Low-Cost, High-Efficiency Solar CellsThe Journal of Physical Chemistry Letters, 2013
- Efficient Hybrid Solar Cells Based on Meso-Superstructured Organometal Halide PerovskitesScience, 2012