Photovoltaic cells are used to convert sunlight into electricity; the commercial photovoltaic cells made up of silicon but the main drawback of the solar cells is low conversion efficiency. In order to improve conversion efficiency generally mirrors and lens system is used as conventional solar concentrators, in the fact they have some drawback of bulky in nature, high installation cost, need the tracking system to face the sun, and also concentrating both light and heat on the solar cell. To overcome these problems holographic solar concentrators were used as solar concentrators. Holography is one of the very promising technologies to produce solar concentrators; mostly volume phase holograms are used as holographic solar concentrators. The holographic solar concentrators have some major advantages of lightweight, cool light concentration, and selective wavelength concentrations for wavelength dependable solar cells. In this paper, a brief review and basic study of holographic solar concentrators have been discussed. The key contributions of each work examined here and different technologies also discussed. This review is useful to study about basic foundations and create new ideas for future research work.