Understanding how excess lead iodide precursor improves halide perovskite solar cell performance

Byung-wook Park; Nir Kedem; Michael Kulbak; Do Yoon Lee; Woon Seok Yang; Nam Joong Jeon; Jangwon Seo; Geonhwa Kim; Ki Jeong Kim; Tae Joo Shin; Gary Hodes; David Cahen; Sang Il Seok

doi:10.1038/s41467-018-05583-w

Nature Communications (Aug 2018)

Understanding how excess lead iodide precursor improves halide perovskite solar cell performance

Byung-wook Park,
Nir Kedem,
Michael Kulbak,
Do Yoon Lee,
Woon Seok Yang,
Nam Joong Jeon,
Jangwon Seo,
Geonhwa Kim,
Ki Jeong Kim,
Tae Joo Shin,
Gary Hodes,
David Cahen,
Sang Il Seok

Affiliations

Byung-wook Park: Perovtronics Research Center, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST)
Nir Kedem: Department of Materials & Interface, Weizmann Institute of Science
Michael Kulbak: Department of Materials & Interface, Weizmann Institute of Science
Do Yoon Lee: Perovtronics Research Center, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST)
Woon Seok Yang: Perovtronics Research Center, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST)
Nam Joong Jeon: Division of Advanced Materials, Korea Research Institute of Chemical Technology (KRICT)
Jangwon Seo: Division of Advanced Materials, Korea Research Institute of Chemical Technology (KRICT)
Geonhwa Kim: Beamline Research Division, Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH)
Ki Jeong Kim: Beamline Research Division, Pohang Accelerator Laboratory (PAL), Pohang University of Science and Technology (POSTECH)
Tae Joo Shin: UNIST Central Research Facilities & School of Natural Science, Ulsan National Institute of Science and Technology (UNIST)
Gary Hodes: Department of Materials & Interface, Weizmann Institute of Science
David Cahen: Department of Materials & Interface, Weizmann Institute of Science
Sang Il Seok: Perovtronics Research Center, School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST)

DOI: https://doi.org/10.1038/s41467-018-05583-w
Journal volume & issue: Vol. 9, no. 1
pp. 1 – 8

Abstract

Read online

Excess lead iodide in the mixed halide perovskites solar cells leads to high device performance but its origin remains elusive. Here Park et al. unveil the underlying microscopic mechanism to be promoting the oriented growth of the perovskites crystals and reducing the defect concentration.

Published in Nature Communications

ISSN: 2041-1723 (Online)
Publisher: Nature Portfolio
Country of publisher: United Kingdom
LCC subjects: Science
Website: https://www.nature.com/ncomms/

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