“…Conventional solar cells are mainly composed of silicon (Si) and silicon‐based materials, GaAs, CdTe, CIGS (copper indium gallium selenide), and other materials, among which the highest PCE of GaAs solar cells is (37.4%). [ 154–159 ] Due to the extremely high production cost of gallium arsenide, which limits the application of gallium arsenide materials, polysilicon, and silicon‐based materials have relatively low production costs, so silicon and silicon‐based materials are the most widely used (≈24.4%). Research on solar cell materials with lower preparation cost and improved PCE aims to tackle the problem of energy depletion crisis and serious environmental pollution, and is one of the important ways to develop the photovoltaic field.…”