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Related Concept Videos

P-N junction01:11

P-N junction

469
A p-n junction is formed when p-type and n-type semiconductor materials are joined together. At the interface of the p-n junction, holes from the p-side and electrons from the n-side begin to diffuse into the opposite sides due to the concentration gradient. This diffusion of carriers leads to a region around the junction where there are no free charge carriers, known as the depletion region. The charge density within the depletion region for the n-side and p-side can be described by the...
469

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Performance of Triple-Cation Perovskite Solar Cells under Different Indoor Operating Conditions.

Marko Jošt1, Žan Ajdič1, Marko Topič1

  • 1Faculty of Electrical Engineering, University of Ljubljana, Tržaška 25, 1000 Ljubljana, Slovenia.

ACS Applied Materials & Interfaces
|November 5, 2024
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Summary

Triple-cation perovskite solar cells achieve high efficiency for indoor applications. Optimized bandgaps and passivation yield up to 34.0% power conversion efficiency (PCE) with excellent stability.

Keywords:
bandgap tuningdetailed balance limitindoor operationperovskite solar cellsstability

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Area of Science:

  • Materials Science
  • Renewable Energy
  • Photovoltaics

Background:

  • Triple-cation perovskite solar cells are promising for indoor energy harvesting.
  • Understanding their performance under diverse indoor lighting conditions is crucial.

Purpose of the Study:

  • To systematically analyze triple-cation perovskite solar cells for indoor applications.
  • To determine the optimal bandgap and passivation strategies for maximizing power conversion efficiency (PCE) under indoor light.

Main Methods:

  • Fabrication of devices with bandgaps ranging from 1.6 to 1.77 eV.
  • Performance evaluation under simulated indoor white light emitting diode (LED) and 1-sun AM1.5 conditions.
  • Stability testing under simulated office conditions and continuous illumination.

Main Results:

  • Highest PCE of 34.0% achieved with a 1.67 eV bandgap and Al2O3 passivation under 870 lx.
  • Devices near the optimal bandgap (1.77 eV) showed reduced performance due to lower perovskite quality.
  • Optimal performance observed under warmer LED color temperatures.
  • No degradation observed during a 33-day test under simulated office conditions; T80 of 30 days under continuous illumination.

Conclusions:

  • Triple-cation perovskite solar cells demonstrate high potential for indoor energy harvesting.
  • Bandgap tuning and passivation are critical for optimizing indoor PCE.
  • These devices exhibit remarkable stability under realistic indoor operating conditions.