During deposition of materials on nanotextured surfaces, the texture shape changes. Considering this non-conformal growth of layers significantly improves accuracy of optical simulations of thin-film solar cells. Using this model, these changes can be predicted.
- Prediction of changes in texture shape during deposition,
- Works on different materials and types of deposition.
Two types of growth are combined in the model:
- ideal conformal growth (in vertical direction) and
- isotropic growth (in direction of local surface normal).
Using proper ratio between the two, we can successfully predict the changes in surface shape during deposition. Proper ratio is determined from cross-sectional images of deposited layers/cells on textured surfaces.