Photovoltaic Recovery of All Printable Mesoporous-Carbon-based Perovskite Solar Cells

Stav Alon, Maayan Sohmer, Chandra Shakher Pathak, Iris Visoly-Fisher, Lioz Etgar

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Lead halide perovskites attract much attention in recent years as a realistic solution for efficient and low-cost solar cells. One of the interesting solar cell structures is the fully mesoporous-carbon-based perovskite solar cells. The mesoporous layers can be fabricated entirely by screen printing with the potential for upscaling. Herein, the two-step deposition of perovskite in mesoporous-carbon-based perovskite solar cells is studied. The influence of the dipping time on the photovoltaic parameters is investigated using charge extraction and intensity-modulated photovoltage spectroscopy (IMVS) measurements. A power conversion efficiency of 15% is observed for cells fabricated using two-step deposition which is one of the highest reported for this solar cell structure. Stability characterizations at maximum power point (MPP) tracking show degradation with time, however a complete recovery of the devices in the dark is revealed. Analyzing the mechanism for this shows that the perovskite's unit cell shrinks during the recovery process due to internal stress relief. This interesting phenomenon opens the possibility to optimize the stability of these solar cells for commercial applications.

Original languageEnglish
Article number2100028
JournalSolar RRL
Volume5
Issue number4
DOIs
StatePublished - 1 Apr 2021

Keywords

  • dipping times
  • mesoporous carbon cells
  • perovskites
  • stabilities
  • two-step deposition

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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