A dye sensitized solar cell  is a new class of low cost solar cell that belongs to the group of thin film solar cells and offer enormous potential as an alternative renewable energy provider. The necessity of energy in all over the world has been growing abruptly over the years. Since conventional energy cannot handle with these unexpected escalating changes, so we must think about options to overcome this fast growing energy crisis, there has been raising interest in non conventional energy sources. Solar photovoltaic cell  could be one such alternative energy source since solar energy is abundantly in all over world which is renewable, and ecofriendly to the living things. Significant enhancement in the power-conversion efficiency of natural dye sensitized solar cells has been reported by mimicking the principles of natural photosynthetic light-harvesting complexes. DSSCs based on co-sensitization of chlorophyll-a derivative with a chlorophyll-b or c derivative a highest power conversion efficiency of up to 5.4% has been obtained –.
A. George, Thanseema, A. P., Sreelatha, K. S., Dr. Sreekala C. O., and Jinchu, I., “Device stability study of dye sensitized solar cells incorporated with MWCNTs”, Electrical, Electronics, and Optimization Techniques (ICEEOT), International Conference on, 2016.