Rethinking solar energy has led to significant advances in environmentally friendly materials, with innovations such as perovskite solar cells (PSCs) leading the revolution. For their crystalline structure, perovskite has been named, and due to their exceptional light absorption and energy conversion efficiency, they have emerged in the field of photovoltaic solar cells, because of the cheaper synthesis and less energy-intensive processes manufacturing, making them more sustainable contrasting traditional silicon-based solar cells. Recently, PSCs have achieved a high record where the National Renewable Energy Laboratory (NREL) announced a new record in PSC efficiency of over 26.1%, which is very close to theoretical efficiency. In this chapter, we deliver a comprehensive exploration of the recent advances in solar technology, with a particular focus on sustainable and environmentally friendly solutions. PSCs attracted the attention of researchers these last years in solar technology due to their high efficiency and cost-effectiveness compared to traditional silicon-based cells. In addition, PSCs can be manufactured in thin-film form, enabling flexible and lightweight designs that can be integrated into various applications, from building-integrated photovoltaics to wearable electronics. The chapter delves into how researchers are exploring innovative approaches to improve the stability and durability of PSCs, which have traditionally been an issue. Advanced encapsulation techniques, materials engineering, and the incorporation of self-healing properties are being actively investigated to overcome these challenges. Traditional manufacturing processes often involve toxic solvents and materials, which can undermine the environmental benefits of solar energy; the chapter highlights the development of next-generation solar cells and how new and eco-friendly fabrication methods can enhance the sustainability of solar technology, through the opportunities associated with green solar materials. These advancements not only make solar energy more sustainable but also help to reduce the overall carbon footprint of solar cell production and accelerate the commercialization of PSCs. The final section discusses the future prospects and challenges for environmentally friendly solar energy. It addresses the ongoing research and development efforts needed to overcome current limitations and further improve the performance and sustainability of solar technologies, ultimately contributing to a world with greener and more cleaner energy.