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The domination of ionic conductivity in tetragonal phase of the organometal halide perovskite CH3NH3PbI3-xClx

Abstract

Organometal trihalide perovskites have recently gained extreme attention due to their high solar energy conversion in photovoltaic cells. Here, we investigate the contribution of iodide ions to a total conductivity of the mixed lead halide perovskite CH3NH3PbI3−xClx with a use of the modified DC Hebb–Wagner polarization method. It has been identified that an ionic conductivity dominates in tetragonal phase which is associated with room temperature. The obtained activation energy for this type of hopping mechanism is equal to (0.87 ± 0.02) eV, which is in a good agreement with previous literature reports. The high contribution of ionic conductivity at room temperature might be a reason of the observed hysteresis in halide perovskite solar cells.

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Category:
Articles
Type:
artykuł w czasopiśmie wyróżnionym w JCR
Published in:
SOLID STATE SCIENCES no. 82, pages 19 - 23,
ISSN: 1293-2558
Language:
English
Publication year:
2018
Bibliographic description:
Głowienka D., Miruszewski T., Szmytkowski J.: The domination of ionic conductivity in tetragonal phase of the organometal halide perovskite CH3NH3PbI3-xClx// SOLID STATE SCIENCES. -Vol. 82, (2018), s.19-23
DOI:
Digital Object Identifier (open in new tab) 10.1016/j.solidstatesciences.2018.05.009
Sources of funding:
  • Statutory activity/subsidy
Verified by:
Gdańsk University of Technology

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