Atomic Layer Deposition of ZnO on InP Quantum Dot Films for Charge Separation, Stabilization, and Solar Cell Formation

To improve the stability and carrier mobility of quantum dot (QD) optoelectronic devices, encapsulation or pore infilling processes are advantageous. Atomic layer deposition (ALD) is an ideal technique to infill and overcoat QD films, as it provides excellent control over film growth at the sub-nanometer scale and results in conformal...

Space charges in nanostructured solar cells: CuInS2 thin films and CdSe quantum dots

Space charges in two heterojunctions (i.e., TiO2/CuInS2 and TiO2/QD-CdSe) are studied by means of impedance spectroscopy and capacitance studies. Several lattice defects are found. When applied in solar cells, the defects may have a negative effect on the efficiency. Therefore, it is important to know the nature of the defects. In this thesis a...