R.  Bisht, Sudhakar, V., Kavungathodi, M. Fairoos Me, Karjule, N., and Nithyanandhan, J., ?Fused fluorenylindolenine-donor-based unsymmetrical squaraine dyes for dye-sensitized solar cells?, ACS Applied Materials & Interfaces, vol. 10, no. 31, pp. 26335-26347, 2018.

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. Kumar Singh, Kavungathodi, M. Fairoos Me, and Nithyanandhan, J., ?Alkyl-group-wrapped unsymmetrical squaraine dyes for dye-sensitized solar cells: branched alkyl chains modulate the aggregation of dyes and charge recombination processes?, ACS Applied Materials & Interfaces, vol. 12, no. 2, pp. 2555-2565, 2020.

A. Kumar Singh and Nithyanandhan, J., ?Indoline-based donor-pi-acceptor visible-light responsive organic dyes for dye-sensitized solar cells: co-sensitization with squaraine dye for panchromatic IPCE response?, ACS Applied Energy Materials, vol. 5, no. 2, pp. 1858-1868, 2022.

A. Kumar Singh, Sudhakar, V., Javaregowda, B. H., Bisht, R., Krishnamoorthy, K., and Nithyanandhan, J., ?Modular TiO2-squaraine dyes/electrolyte interface for dye-sensitized solar cells with cobalt electrolyte?, Chemphotochem, vol. 7, no. 4, 2023.

A.  Singh, Singh, A. Kumar, Dixit, R., Vanka, K., Krishnamoorthy, K., and Nithyanandhan, J., ?Visible-light-active unsymmetrical squaraine dyes with 1 V of open-circuit voltage for dye-sensitized solar cells?, ChemPhotoChem, vol. 7, no. 5, 2023.

K. Balaso Ingole, Deshmukh, S. Suresh, Verma, T. Singh, Krishnamurty, S., Krishnamoorthy, K., and Nithyanandhan, J., ?Triazatruxene amine donor-based visible-light-responsive unsymmetrical squaraine dyes for dye-sensitized solar cells?, ACS Applied Energy Materials, vol. 7, no. 18, pp. 7982-7991, 2024.

A. P.  Jadhav, Singh, A. Kumar, Shivankar, B. R., Siby, J., Krishnamurty, S., Krishnamoorthy, K., and Nithyanandhan, J., ?Effect of cyclization and alkyl group wrapping in visible-light-active unsymmetrical squaraine dyes for dye-sensitized solar cells?, ACS Applied Energy Materials, vol. 8, no. 8, pp. 5017-5030, 2025.