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- Title
Enhancing the Optoelectronic Performance of Perovskite Solar Cells via a Textured CH<sub>3</sub>NH<sub>3</sub>PbI<sub>3</sub> Morphology.
- Authors
Pascoe, Alexander R.; Meyer, Steffen; Huang, Wenchao; Li, Wei; Benesperi, Iacopo; Duffy, Noel W.; Spiccia, Leone; Bach, Udo; Cheng, Yi‐Bing
- Abstract
Perovskite-based solar cells are generally assembled as planar structures comprising a flat organoammonium metal halide perovskite layer, or mesoscopic structures employing a mesoporous metal-oxide scaffold into which the perovskite material is infiltrated. To present, little attention has been directed toward the texturing of the perovskite material itself. Herein, a textured CH3NH3PbI3 morphology formed through a thin mesoporous TiO2 seeding layer and a gas-assisted crystallization method is reported. The textured morphology comprises a multitiered nanostructure, which allows for significant improvements in the light harvesting and charge extraction performance of the solar cells. Due to these improvements, average short-circuit current densities for a batch of 28 devices are in excess of 22 mA cm−2, and the maximum recorded power conversion efficiency is 16.3%. The performance gains concomitant with this textured CH3NH3PbI3 morphology provide further insights into how control of the perovskite microstructure can be used to enhance the cell performance.
- Subjects
OPTOELECTRONIC device performance; PEROVSKITE; METAL halides; CRYSTALLIZATION; NANOSTRUCTURED materials
- Publication
Advanced Functional Materials, 2016, Vol 26, Issue 8, p1278
- ISSN
1616-301X
- Publication type
Article
- DOI
10.1002/adfm.201504190