Shahiduzzaman, M., Hossain, M.I., Visal, S., Kaneko, T., Qarony, W., Umezu, S., Tomita, K., Iwamori, S., Knipp, D., Tsang, Y.H., Akhtaruzzaman, M., Nunzi, J., Taima, T. and Isomura, M. 2021. Spray Pyrolyzed TiO2 Embedded Multi-Layer Front Contact Design for High-Efficiency Perovskite Solar Cells. Nano-Micro Letters. 13, (Jan. 2021), 36. DOI:https://doi.org/10.1007/s40820-020-00559-2.