Real-Space Distributions of Electrical Potential in Planar and Porous Peroveskite Solar Cells: Carrier Separation and Transport

Chun Sheng Jiang, Bobby To, Sanjini Nanayakkara, Joseph Luther, Joseph Berry, Kai Zhu, Mowafak Al-Jassim, Mengjin Yang, Jao Van De Lagemaat, Yuanyuan Zhou, Nitin Padture, Weilie Zhou

Research output: Contribution to conferencePaper

1 Scopus Citations

Abstract

We study the carrier transport and separation in planar and porous PS devices, which is one of the most fundamental operation mechanisms of solar cells, by profiling the electrical potential across the devices. We found that the PV devices work by p-n junction at the TiO2/PS interface for the both device structures. Combining the potential profiling results with the solar cell performance parameters taken on the optimized and thickened devices, we found that mobility is the main factor limiting the device performance. Improving the mobility both within grains and across grain boundaries (or enlarging the grain size) are expected to significantly improve the device efficiency.
Original languageAmerican English
Number of pages5
DOIs
StatePublished - 2015
Event2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC) - New Orleans, Louisiana
Duration: 14 Jun 201519 Jun 2015

Conference

Conference2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC)
CityNew Orleans, Louisiana
Period14/06/1519/06/15

NREL Publication Number

  • NREL/CP-5K00-63572

Keywords

  • carrier separation
  • carrier transport
  • electrical potential real-space distribution
  • grain boundaries
  • p-n junctions
  • solar cells
  • TiO2-PS interface

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