NK FINDER:

Matlab software to derive optical constants from Transmission data.

EMISSION: 

Matlab software to model thin film emission. Models interface and re-absorption, but not re-emission.

INCOHERENT-TANDEM-MODEL: 

Uses Transfer Matrix to model Tandem cell with incoherent (Silicon or other) layer.

SUB K:
MATLAB based open source code to obtain the sub-gap extinction coefficient via numerical optical transfer matrix modelling.