Transparent Perovskite Light-Emitting Diodes with Conductive Oxide Top Electrodes
Michele Forzatti1, Sergio Martínez-Saiz1, Morena Cervino1
1Institute of Molecular Science, University of Valencia, Paterna, Spain.
Advanced Materials (Deerfield Beach, Fla.)
|March 10, 2026
Summary
Transparent light-emitting diodes (TrLEDs) offer dual functionality. Researchers developed a universal fabrication method for perovskite TrLEDs (TrPeLEDs) achieving high luminance and excellent visible transmittance.
Area of Science:
- Materials Science
- Optoelectronics
- Nanotechnology
Background:
- Transparent light-emitting diodes (TrLEDs) enable simultaneous data display and environmental visibility, opening diverse applications.
- Perovskite materials are attractive for TrLEDs due to their narrow emission spectra and tunable colors.
Purpose of the Study:
- To develop a universal fabrication method for transparent perovskite LEDs (TrPeLEDs).
- To achieve high performance in TrPeLEDs using various perovskite compositions and device structures.
Main Methods:
- Depositing indium tin oxide (ITO) electrodes via pulsed laser deposition.
- Incorporating a metal oxide buffer layer for universal TrPeLED fabrication.
- Utilizing in situ formed perovskite nanocrystals (NCs) and colloidal NC layers.
Main Results:
- Achieved a record-high combined luminance of 150,000 cd m⁻² for green TrPeLEDs based on in situ formed NCs on ITO glass.
- Demonstrated TrPeLEDs with an average visible transmittance of 80% using a thin colloidal NC layer.
- Attained a color rendering index above 90 for the developed TrPeLEDs.
Conclusions:
- The developed ITO electrode deposition method with a buffer layer is a universal approach for fabricating diverse TrPeLEDs.
- Perovskite nanocrystal-based TrPeLEDs show significant potential for high-performance transparent display applications.
