InP QDs modified\nGaAs/PEDOT:PSS hybrid solar cell\nwith efficiency over 15%

GaAs heterojunction solar cells are known as promising\nsubstitutions\nfor traditional GaAs solar cells for their low cost and performance\npotential. Nevertheless, the further performance enhancement is hindered\nby insufficient spectral absorption and nonradioactive recombination.\nIn this work, an InP quantum dot (QD) modified GaAs/PEDOT:PSS solar\ncell is designed to enhance spectrum utilization and suppress the\nnonradioactive carriers loss and the solar cell efficiency at 15.08%\nis achieved. Furthermore, InP QDs used in this work are synthesized\nby a novel hydrothermal method. During the synthesis process, β-cyclodextrin\n(β-cyc) was introduced into the reactants and acted as a reaction\ncell, isolating water and oxygen, enabling the reaction to proceed\nin ambient air. InP QDs synthesized by this method can achieve band\nengineering by altering reactant ratios, thereby effectively serving\nas both a Luminescent Solar Concentrator (LSC) and a Front Surface\nField (FSF) in GaAs/PEDOT:PSS solar cells. This work demonstrates\nan inspiring way to synthesize InP QDs and optimize the performance\nof GaAs hybrid solar cells.