Research
Understanding the role of defects in arsenic doped CdSeTe solar cells using nano-scale synchrotron x-ray microscopy
Polycrystalline CdSeTe solar cells are the world’s leading thin-film based solar cell technologies. Typical device growth and processing leads to formation of various extrinsic defects such as…
Cu(In,Ga)Se2 – Absorber layers
Chalcogenide-based solar cells are receiving attention because of their low manufacturing costs and demonstrated ~20% efficiency in laboratory-scale small-area devices. Theoretically, these …
In-situ X-ray Microscopy
Our goal is to address the following industrially relevant effects :
Operando electromigration of species of species to grain boundaries, dislocations and interfacesMetastable defects…
Low-Temperature Contact Formation for Photovoltaic Applications
Low resistance ohmic contacts are tremendously important for optoelectronic applications of all types. Formation of such contacts often requires high temperature (> 400°C) annealing to either…
New carrier-selective contact materials for silicon solar cells
Current record crystalline silicon conversion efficiency of 25.6% is still about 3.5% away from its thermodynamic limit. Losses are principally attributed to parasitic optical absorption and…
PVMirror Project
In the PVMirror project, we combine the technique of Photovoltaic and CSP(Concentrated Solar Power) together. Generally speaking, a band-pass mirror film is encapsulanted in front of solar cell…
Silicon Defect Assessment and Modeling in High Quality c-Si Material
In the last few years research on silicon photovoltaic has strongly shifted toward high-quality mono-crystalline silicon material driven by the need of improving the efficiency/costs ratio. …
Transparent Conductors
Conductivity and transparency are two properties mutually exclusive in nature. Thus, transparent conductors are complex engineered systems that required fine levels of defect control and tuning.…