Depei Zhang

• Freezing of a Spin Liquid with Strong Quantum Fluctuations

In magnets, spins of electrons can interact with their neighbors due to the overlap of their wavefunctions and the Pauli exclusion principle leading to an effective exchange interaction ......More >

• Origin of vertical orientation in two-dimensional metal halide perovskites and its effect on photovoltaic performance

Thin films based on two-dimensional metal halide perovskites have achieved exceptional performance and stability in numerous optoelectronic device applications. Simple solution processing of ......More >

• Lee Group's Work on Solar Cells Highlighted by DOE

Twisting Molecule Wrings More Power from Solar Cells Inside a solar cell, sunlight excites electrons. But these electrons often don’t last long enough to go on to power cell ......More >

• Origin of Long Lifetime of Charge Carriers in Solar Cell Perovskites

When sunlight shines on a semiconducting material, electrons in the material can be excited from their original states to higher energy states, forming photo-excited electrons and leaving empty ......More >