Enhancing the Optoelectronic Performance of Perovskite Solar Cells via a Textured CH3NH3PbI3 Morphology

Alexander R. Pascoe, Steffen Meyer, Wenchao Huang, Wei Li, Iacopo Benesperi, Noel W. Duffy, Leone Spiccia, Udo Bach, Yi-Bing Cheng

Research output: Contribution to journalArticleResearchpeer-review

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. A textured CH3NH3PbI3 morphology for perovskite-based solar cells is presented. The textured morphology exhibits enhanced light harvesting and charge separation properties. The highest measured power conversion efficiency is 16.3%.

Original languageEnglish
Pages (from-to)1278-1285
Number of pages8
JournalAdvanced Functional Materials
Volume26
Issue number8
DOIs
Publication statusPublished - 23 Feb 2016

Keywords

  • gas-assisted crystallization method
  • perovskite solar cell
  • textured morphology

Cite this

Pascoe, Alexander R. ; Meyer, Steffen ; Huang, Wenchao ; Li, Wei ; Benesperi, Iacopo ; Duffy, Noel W. ; Spiccia, Leone ; Bach, Udo ; Cheng, Yi-Bing. / Enhancing the Optoelectronic Performance of Perovskite Solar Cells via a Textured CH3NH3PbI3 Morphology. In: Advanced Functional Materials. 2016 ; Vol. 26, No. 8. pp. 1278-1285.
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Enhancing the Optoelectronic Performance of Perovskite Solar Cells via a Textured CH3NH3PbI3 Morphology. / Pascoe, Alexander R.; Meyer, Steffen; Huang, Wenchao; Li, Wei; Benesperi, Iacopo; Duffy, Noel W.; Spiccia, Leone; Bach, Udo; Cheng, Yi-Bing.

In: Advanced Functional Materials, Vol. 26, No. 8, 23.02.2016, p. 1278-1285.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Cheng, Yi-Bing

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