Influence of illumination spectra on DSSC performance
I. Juhász junger, D. Werner, E. Schwenzfeier-Hellkamp, A. Ehrmann, Optik 177 (2019) 8–12.

Influence of solvents on Aloe vera gel performance in dye-sensitized solar cells
K. Gossen, J.L. Storck, A. Ehrmann, Optik 180 (2019) 615–618.

Commercially available teas as possible dyes for dye-sensitized solar cells
S. Kohn, C. Großerhode, J.L. Storck, G. Grötsch, C. Cornelißen, A. Streitenberger, C. Grassmann, A. Schwarz-Pfeiffer, A. Ehrmann, Optik 185 (2019) 178–182.

Influence of FTO glass cleaning on DSSC performance
K. Gossen, A. Ehrmann, Optik 183 (2019) 253–256.

Application of natural dyes on diverse textile materials
A. Fröse, K. Schmidtke, T. Sukmann, I. Juhász Junger, A. Ehrmann, Optik 181 (2019) 215–219.