Plasmonic Enhancements in Perovskite Solar Cells

Perovskite solar cells have emerged as high-performance photovoltaic devices owing to their exceptional light-harvesting properties and rapidly rising power conversion efficiencies. Integrating metallic nanostructures into these devices harnesses plasmonic effects—collective oscillations of conduction electrons at metal–dielectric interfaces—to intensify light absorption, scatter incident photons into guided modes and concentrate electromagnetic fields within the active layer. Such enhancements permit thinner absorber films, reduced recombination losses and improved charge separation. Common approaches include embedding metal nanoparticles or patterned back reflectors, engineering localised surface plasmon resonances at wavelengths complementary to the perovskite band gap, and combining dielectric photonic structures with plasmonic elements to trap or redirect light. These strategies not only raise device efficiency but also open avenues for semi-transparent modules, building-integrated photovoltaics and flexible form factors, underscoring both global significance and practical applications.

Research from Nature Portfolio

One study introduced a convex photonic–plasmonic nanostructure in which a light-trapping dielectric array is combined with a plasmonic back reflector. By exploiting surface plasmon resonance at the metal contact, electromagnetic fields concentrate in the perovskite layer, boosting short-circuit current density from 18.6 to 23.5 mA cm⁻² and raising power conversion efficiency from 14.6 % to 19.5 % without altering absorber thickness. A separate work employed slotted and inverted-prism silica layers atop a transparent conducting oxide electrode to minimise optical losses. This design enhanced light incoupling across a wide angular range and improved the device’s operational envelope, demonstrating substantial gains in photocurrent and viewing-angle tolerance.

Plasmonic Enhancements in Perovskite Solar Cells publication trend

The graph below shows the total number of articles in plasmonic enhancements in perovskite solar cells across all publications each year (not limited to Nature Index journals).

Technical terms

Localised surface plasmon resonance: Collective oscillation of free electrons in metal nanostructures that amplifies the local electromagnetic field at resonant wavelengths.

Transparent conducting oxide: A material offering both high electrical conductivity and optical transparency, used as a front electrode in solar cells.

Photonic–plasmonic nanostructure: A hybrid architecture combining dielectric light-trapping elements with metallic components to manipulate photons at the nanoscale.

Mie theory: An analytical framework describing how spherical particles scatter and absorb light, dependent on particle size, composition and wavelength.

References

1. High-performance perovskite solar cell using photonic–plasmonic nanostructure. Scientific Reports (2020).
2. Models of light absorption enhancement in perovskite solar cells by plasmonic nanoparticles. Exploration (2023).
3. Recent Advances in Plasmonic Perovskite Solar Cells. Advanced Science (2020).
4. Plasmonic–perovskite solar cells, light emitters, and sensors. Microsystems & Nanoengineering (2022).