7 papers
Thin film synthesis of SrZn2P2 with SrI2 post-annealing for enhanced crystallinity and optoelectronic quality
Sita Dugu, Shaham Quadir, Christopher P. Muzzillo +11
Ternary Zintl phosphides are promising light-absorbing semiconductors for thin-film optoelectronic applications, but strategies for controlling their microstructure and optoelectro…
BaCd2P2: a promising impurity-tolerant counterpart of GaAs for photovoltaics
Gideon Kassa, Zhenkun Yuan, Muhammad R. Hasan +5
BaCd2P2 (BCP) has been recently identified as a new solar absorber with promising optoelectronic properties. This work demonstrates that, despite having a low precursor purity (98.…
Long photoexcited carrier lifetime in a stable and earth-abundant zinc polyphosphide
Zhenkun Yuan, Genevieve Amobi, Shaham Quadir +16
Halide perovskites have revolutionized optoelectronics by demonstrating that long carrier lifetime can be achieved in materials processed in relatively uncontrolled environments, w…
Alloying to Tune the Bandgap of the AM2Pn2 Zintl Compounds
Andrew Pike, Zhenkun Yuan, Muhammad Rubaiat Hasan +6
The AM2Pn2 Zintl compounds are a large class of semiconductor materials that have a wide range of bandgaps and are mostly stable in the same crystal structure. Representative compo…
CaCdP: A Visible-Light Absorbing Zintl Phosphide Stable under Photoelectrochemical Water Oxidation
Guillermo L. Esparza, Zhenkun Yuan, Muhammad Rubaiat Hasan +9
A key bottleneck to solar fuels is the absence of stable and strongly absorbing photoelectrode materials for the oxygen evolution reaction (OER). Modern approaches generally trade…
Significant Photoluminescence Improvements from Bulk Germanium-Based Thin Films with Ultra-low Threading Dislocation Densities
Liming Wang, Gideon Kassa, Jifeng Liu +1
Bulk Ge crystals, characterized by significantly lower threading dislocation densities than their epitaxial counterparts, emerge as optimal candidates for studying and improving Ge…