Creating hybrid Frenkel-Wannier-Mott polaritons

This work is highlighted by College of Engineering at UM.

You can read about this and other projects on our research page.

Electron-filtering buffer boosts OPV efficiency

Device structure of DBP:C70 planar-mixed heterojunction (PM-HJ) (left) and Current-voltage (J-V) characteristics under 1 sun illumination (right). The fullerene-based electron filtering buffer (red) performs better than a conventional BPhen buffer (black).

The new buffer exhibits high electron mobility and efficient exciton blocking, which significantly reduce the bimolecular recombination and exciton-polaron quenching resulting in a power conversion efficiency of 8.1% under 1 sun illumination.

You can read about this and other projects on our research page.

Effect of solvent annealing on squaraine-based OPV cells

Current-voltage (J-V) characteristics under 1 sun for solvent-annealed (SVA) blend squaraine OPV cells (left); selected area electron diffraction (SAED) pattern of SVA blend SQ spherulite (right).

This work is highlighted by ACS Nano.

You can read about this and other projects on our research page.

Flexible III-V semiconductor devices using epitaxial lift-off

Photograph of lifted-off 2 in. diameter epitaxial layer containing an array of thin-film GaAs solar cells (left) and thin-film InGaP-based LED fabricated by a combination of epitaxial lift-off and cold-weld bonding to a 50 um thick KaptonĀ® sheet (right).

You can read about this and other projects on our research page.