The layer editor

To set up and edit the vertical device structure, use the layer editor this is shown in figure fig:layer_editor on input line 118. Using this tool, you can add layers, remove layers, and move layers up and down.

The first column: This is a human readable name for the layer.

The second column: The thickness of the layer in meters.

Third column: Sets the optical material properties.

Forth column: Sets how the model treats the layer. The optical equations are solved over all layers. However, if the layer is set as 'active layer', then gpvdm will the also solve the electrical equations over this layer. More than one layer can be set as an active layer, in this case, the electrical equations will be solved over all, the layers marked 'active layer', this is useful when simulating heterojunctions. A layer type 'other', means that the electrical equations will not be solved over that layer, but the optical equations will be. A layer type contact, denotes that the layer represents a contact layer. This is only affects/is needed for 2/3D simulations.

Figure 5: The contact editor.