M. Chandra Sil, Kavungathodi, M. Fairoos Me, and Nithyanandhan, J., ?Effect and position of spiro-bipropylenedioxythiophene pi-spacer in donor-pi-spacer-acceptor dyes for dye-sensitized solar cell?, Dyes and Pigments, vol. 161, pp. 313-323, 2019.

V.  Punitharasu, Kavungathodi, M. Fairoos Me, Singh, A. Kumar, and Nithyanandhan, J., ?pi-Extended cis-configured unsynimetrical squaraine dyes for dye-sensitized solar cells: panchromatic response?, ACS Applied Energy Materials, vol. 2, no. 12, pp. 8464-8472, 2019.

A. P.  Jadhav, Siby, J., Pandya, R., Vanka, K., Krishnamoorthy, K., and Nithyanandhan, J., ?Visible-light active ?-extended unsymmetrical squaraine dyes for dye-sensitized solar cells: steric effects for controlling the aggregation of dyes?, ACS Applied Energy Materials, vol. 8, no. 20, pp. 15459-15470, 2025.

J.  Siby and Nithyanandhan, J., ?D-A-D based NIR and visible homodimeric squaraine dyes for dye-sensitized solar cells: Modulation of excitonic coupling?, Journal of Photochemistry and Photobiology A-Chemistry, vol. 473, p. 116874, 2026.