R.  Bisht, Munavvar, F. Mk, Singh, A. Kumar, and Nithyanandhan, J., ?Panchromatic sensitizer for dye-sensitized solar cells: un-symmetrical squaraine dyes incorporating benzodithiophene ?-spacer with alkyl chains to extend conjugation, control the dye assembly on TiO2 and retard charge recombination?, Journal of Organic Chemistry, vol. 82, no. 4, pp. 1920?1930, 2017.

M. Chandra Sil, Sudhakar, V., Singh, A. Kumar, Kavungathodi, M. Fairoos Me, and Nithyanandhan, J., ? Homo- and heterodimeric dyes for dye-sensitized solar cells: panchromatic light absorption and modulated open circuit potential?, ChemPlusChem, vol. 83, no. 11, pp.  998-1007, 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, Maibam, A., Javaregowda, B. H., Bisht, R., Kudlu, A., Krishnamurty, S., Krishnamoorthy, K., and Nithyanandhan, J., ?Unsymmetrical squaraine dyes for dye-sensitized solar cells: position of the anchoring group controls the orientation and self-assembly of sensitizers on the TiO2 surface and modulates its flat band potential?, Journal of Physical Chemistry C, vol. 124, no. 34, pp. 18436-18451, 2020.

A. Kumar Singh and Nithyanandhan, J., ?Amphiphilic indoline-based unsymmetrical squaraine dyes for dye-sensitized solar cells: modulating the dye-TiO2/electrolyte interface for nonaqueous and aqueous electrolytes?, ACS Applied Energy Materials, vol. 4, no. 12, pp. 13932-13942, 2021.

A. Kumar Singh, Veetil, A. Nellur, and Nithyanandhan, J., ?D-A-D based complementary unsymmetrical squaraine dyes for co-sensitized solar cells: enhanced photocurrent generation and suppressed charge recombination processes by controlled aggregation?, ACS Applied Energy Materials, vol. 4, no. 4, pp. 3182-3193, 2021.

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. P.  Jadhav, Singh, A. Kumar, Maibam, A., Krishnamurty, S., Krishnamoorthy, K., and Nithyanandhan, J., ?D-A-D-based unsymmetrical thiosquaraine dye for the dye-sensitized solar cells(dagger)?, Photochemistry and Photobiology, vol. 99, no. 2, pp. 529-537, 2023.

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.

I. S.  Nawghare, Singh, A. Kumar, Maibam, A., Krishnamurty, S., Krishnamoorthy, K., and Nithyanandhan, J., ?Steric and electronic effect in unsymmetrical squaraine dyes for dye-sensitized solar cells?, Journal of physical chemistry C , vol. 127, pp. 22473-22488, 2023.

A. P.  Jadhav, Singh, A. Kumar, Maibam, A., Krishnamurty, S., Krishnamoorthy, K., and Nithyanandhan, J., ?Aniline and indoline donors based far-red active unsymmetrical squaraine dyes for dye sensitized solar cells?, Chemphotochem, vol. 8, no. 2, 2024.

A.  Singh, Singh, A. Kumar, Dixit, R., Vanka, K., Krishnamoorthy, K., and Nithyanandhan, J., ?Effect of position of donor units and alkyl groups on dye-sensitized solar cell device performance: indoline-aniline donor-based visible light active unsymmetrical squaraine dyes?, ACS Om., vol. 9, no. 14, pp. 16429-16442, 2024.

A. P.  Jadhav, Singh, A. Kumar, Pandya, R., Vanka, K., Krishnamoorthy, K., and Jayaraj, N., ?Far-red active unsymmetrical squaraine dyes containing N-arylated indoline donors for dye sensitized solar cells?, Photochemistry and Photobiology, vol. 100, no. 4, pp. 1116-1126, 2024.

A.  Singh, Singh, A. Kumar, Dixit, R., Vanka, K., Krishnamoorthy, K., and Nithyanandhan, J., ?Visible, far-red, and near-infrared active unsymmetrical squaraine dyes based on extended conjugation within the polymethine framework for dye-sensitized solar cells?, ACS Applied Energy Materials, vol. 7, no. 4, pp. 1461-1475, 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.