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Hybrid Perovskite Bulk Photovoltaic Effect Devices and Methods of Making the Same

National Renewable Energy Laboratory

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Publications:

PDF Document Publication16-133 US20180277695A1.pdf (2,855 KB)

Technology Marketing Summary

Perovskite photovoltaics are a new class of light absorbers with exceptional and unparalleled progress in solar power performance. A perovskite is any material with a specific ABX3 crystal structure. In photovoltaic applications, the A cation can be either organic, inorganic, or hybrid in composition. The B component is typically a metal cation such as lead, and X is a halide such as iodine or bromine. Work on solar cells using perovskite materials has advanced rapidly as a result of the material’s excellent light absorption, charge-carrier mobilities, and lifetimes – resulting in high device efficiencies with low-cost, industry-scalable technology. While the potential for perovskite photovoltaic devices is high, commercialization will require overcoming other challenges relating to material stability, efficiency, and environmental compatibility.

Description

Researchers at NREL have created a new perovskite device which operates via the bulk photovoltaic effect. By applying an electric field to a perovskite later, researchers were able to reorient the polarization within the perovskite layer to increase the size of the ferroelectric domains and the magnitude of the electrical, optical, and mechanical response of the perovskite layer. The open circuit voltage of ferroelectric photovoltaics is not limited by the material’s band gap, therefore electron hole pairs can be separated more efficiently. This invention could enable radically new perovskite architectures with higher efficiency and more favorable material properties.

This technology is within the Film Efficiency and Film Deposition groups of NREL’s perovskite portfolio. For further information regarding NREL's broader perovskite portfolio, please visit NREL's Perovskite Patent Portfolio website.

The Film Efficiency category consists of film deposition methods, chemistry improvements, and engineering of device layer and architecture to push commercial perovskite device efficiencies to 20% and beyond.

The Film Deposition category consists of novel methods for more rapid, less expensive, and more effective means of depositing perovskite films. These techniques have been published in multiple peer-reviewed journals and are prepared for scaling to commercial levels.

Benefits
  • Increased open circuit voltage
  • Enables new device architectures
Applications and Industries
  • Perovskites
  • Photovoltaics
Technology Status
Technology IDDevelopment StageAvailabilityPublishedLast Updated
NREL ROI 16-133PrototypeAvailable04/27/201803/28/2018

Contact NREL About This Technology

To: Bill Hadley<bill.hadley@nrel.gov>