The photovoltaic industry is developing rapidly to support the net-zero energy transition. Among various photovoltaic technologies, silicon-based technology is the most advanced, commanding a staggering 95% market share. However, the energy-intensive process of manufacturing silicon wafer raises concerns. In the photovoltaic supply chain, a substantial amount of photovoltaic secondary silicon-containing resource (PV-SSCR), including metallurgical-grade silicon refined slag (MGSRS), silicon fume (SF), silicon cutting waste (SCW) and end-of-life silicon solar cell (ESSC) from discharged modules, can be recycled. Recycling holds the potential to enhance economic value and reduce the overall environmental impacts associated with the lifecycle of silicon photovoltaics. This article offers a comprehensive overview of techniques and applications of four kinds of PV-SSCR: MGSRS, SF, SCW, and ESSC. Moreover, it also highlights challenges and opportunities for further research and development in this field.

光伏产业正在快速发展，以支持净零能源转型。在各种光伏技术中，硅基技术最为先进，占据了惊人的95%的市场份额。然而，硅晶圆制造过程中的能源密集型问题引起了人们的担忧。在光伏供应链中，存在大量的光伏二次含硅资源（PV-SSCR），包括冶金级硅精炼渣（MGSRS）、硅粉（SF）、硅切割废料（SCW）和硅末等。生活来自废弃模块的硅太阳能电池（ESSC）可以回收利用。回收具有提高经济价值并减少与硅光伏生命周期相关的总体环境影响的潜力。本文全面概述了四种 PV-SSCR 的技术和应用：MGRSS、SF、SCW 和 ESSC。此外，它还强调了该领域进一步研究和发展的挑战和机遇。