Wet-Chemical Synthesis and Applications of Semiconductor Nanomaterial-Based Epitaxial Heterostructures

Wet chemical synthesis and physical characterization of doped CeO2 nanoparticles

Solid electrolytes based on doped cerium oxide, Ce(M)O2-δ (M = rare-earth cations), are of considerable interest for potential use in low temperature solid oxide fuel cells (LTSOFCs) due to its higher ionic conductivity than YSZ based solid electrolyte.  In this research work, crystalline, pure Ce1-xMxO2-δ (where M = Gd or Sm, x = 0.10 or 0.20) based nanoparticles were prepared by chemical prec...

Theory of Semiconductor Heterostructures for Infrared Applications

The influence of atomic disorder, biaxial strain, space charge and geometry on the bound electron states and the optical and transport properties of semiconductor heterostructures with infrared optoelectronic applications has been investigated. An empirical pseudopotential scheme facilitating the calculation of band structure in strained-layer, disordered heterostructures has been delineated an...

Vertical 2D/3D Semiconductor Heterostructures Based on Epitaxial Molybdenum Disulfide and Gallium Nitride.

When designing semiconductor heterostructures, it is expected that epitaxial alignment will facilitate low-defect interfaces and efficient vertical transport. Here, we report lattice-matched epitaxial growth of molybdenum disulfide (MoS2) directly on gallium nitride (GaN), resulting in high-quality, unstrained, single-layer MoS2 with strict registry to the GaN lattice. These results present a p...

Semiconductor Nanomaterial Development For Photovoltaic And Thermoelectric Applications

Chen, Liangliang, Ph.D., Purdue University, December 2013. Semiconductor Nanomaterial Development for Photovoltaic and Thermoelectric Applications. Major Professor: Xiulin Ruan, School of Mechanical Engineering. Today’s world is frequently going through fossil energy shortage and environmental consequences brought by the over-emission of greenhouse gas from burning fossil fuels. Therefore, it i...

Chemical Beam Epitaxy of Iii-v Semiconductor Heterostructures